Temperature

Sensing Solutions
Catalogue
 Table of Contents
INTRODUCTION....................................................................................................................... 4
I SERIES
I1 SERIES – BASE METAL AND NOBLE METAL TC ELEMENTS............................................................................. 8
IA SERIES – ANGLE BASE METAL TC ELEMENT.................................................................................................. 9
IP SERIES – METAL ALLOY PROTECTION TUBES.............................................................................................. 10
I2 SERIES – BASE THERMOCOUPLE ELEMENT WITH STEEL THERMOCOUPLE PROTECTION TUBE.................... 11
I3 SERIES – ANGLE STEEL THERMOCOUPLE PROTECTION TUBE WITH BASE THERMOCOUPLE ELEMENT......... 12
I4 SERIES – MGO, BASE METAL TC METAL TC ELEMENTS................................................................................ 13
I5 SERIES – STRAIGHT MGO, BASE METAL TC ASSEMBLIES: REFRACTORY/PIPE REINFORCED ASSEMBLIES.. 14
I6 SERIES – ANGLED MGO, BASE METAL TC ASSEMBLIES: REFRACTORY/PIPE REINFORCED ASSEMBLIES...... 15
I7 SERIES – STRAIGHT MGO, BASE METAL TC ASSEMBLIES: REFRACTORY TUBE ASSEMBLIES....................... 16
I8 SERIES – ANGLED MGO, BASE METAL TC ASSEMBLIES: REFRACTORY TUBE ASSEMBLIES.......................... 17
I9 SERIES – STRAIGHT MGO, BASE METAL TC ASSEMBLIES: CAST IRON AND ENAMELED CAST IRON............ 18
I10 SERIES – ANGLED MGO, BASE METAL TC ASSEMBLIES: CAST IRON AND ENAMLED CAST IRON................ 19
QUICK TIPS............................................................................................................................ 20
T SERIES
T1 SERIES – THERMOCOUPLE PROTECTION TUBES (O’-SIALON, SIALON, PINNACLE, RFM AND SIC).............. 22
T2 SERIES – THERMOCOUPLE PROTECTION TUBES (PLAIN AND RED ENAMEL CAST IRON)............................. 24
M SERIES
M1 SERIES – MINERAL INSULATED THERMOCOUPLE ELEMENTS..................................................................... 25
M2 SERIES – MINERAL INSULATED ELEMENTS PLUG AND JACK STYLE........................................................... 26
M3 SERIES – MINERAL INSULATED ELEMENTS HEAD AND BLOCK................................................................... 27
M3B SERIES – THERMOCOUPLE SENSOR ASSEMBLY WITH HEAD AND NIPPLE................................................ 28
M3C SERIES – THERMOCOUPLE SENSOR ASSEMBLY WITH HEAD AND NIPPLE-UNION-NIPPLE........................ 29
M3D SERIES – THERMOCOUPLE SENSOR ASSEMBLY WITH HEAD AND BUSHING............................................ 30
M4 SERIES – MINERAL INSULATED THERMOCOUPLES WITH LEAD WIRE........................................................ 31
M5 SERIES – MINIATURE SENSORS FOR BEARING TEMPERATURE.................................................................. 32
P SERIES
P1 SERIES – GENERAL APPLICATION DIE THERMOCOUPLES........................................................................... 33
P2 SERIES – SPRING ADJUSTABLE BAYONET STYLE........................................................................................ 34
P3 SERIES – ARMOR ADJUSTABLE BAYONET STYLE........................................................................................ 35
P4 SERIES – THERMOCOUPLE EXTENSIONS................................................................................................... 36
RT SERIES
RT 901 SERIES – RESISTANCE TEMPERATURE DETECTORS (RTDS) SENSOR WITH NIPPLE-UNION-NIPPLE..... 37
RT 902 SERIES – RESISTANCE TEMPERATURE DETECTORS (RTDS) SENSOR WITH EXTENSION CABLE........... 38
RT 903 SERIES – RESISTANCE TEMPERATURE DETECTORS (RTDS) REPLACEMENT SENSOR........................... 39
RT 904 SERIES – RESISTANCE TEMPERATURE DETECTORS (RTDS) SENSOR ASSEMBLY WITH HEAD AND
NIPPLE-UNION-NIPPLE................................................................................................................................... 40
RT 905 SERIES – RESISTANCE TEMPERATURE DETECTORS (RTDS) SENSOR ASSEMBLY WITH HEAD AND
NIPPLE-UNION-NIPPLE................................................................................................................................... 41
TW SERIES............................................................................................................................. 42
TW 701 SERIES – THERMOWELLS: FLANGED STRAIGHT................................................................................. 42
TW 702 SERIES – THERMOWELLS: FLANGED TAPERED................................................................................... 43
TW 703 SERIES – THERMOWELLS: FLANGED STEPPED................................................................................... 44
TW 711 SERIES – THERMOWELLS: THREADED STRAIGHT.............................................................................. 45
TW 712 SERIES – THERMOWELLS: THREADED TAPERED................................................................................. 46
TW 713 SERIES – THERMOWELLS: THREADED STEPPED................................................................................. 47
TW 721 SERIES – THERMOWELLS: VANSTONE STRAIGHT............................................................................... 48
TW 722 SERIES – THERMOWELLS: VANSTONE TAPERED................................................................................. 49
TW 723 SERIES – THERMOWELLS: VANSTONE STEPPED................................................................................. 50
TW 731 SERIES – THERMOWELLS: WELD-IN................................................................................................... 51
A1 SERIES
A1 SERIES – THERMOCOUPLE ACCESSORIES AND WIRES.............................................................................. 52
THERMOCOUPLE PROTECTION TUBES................................................................................................. 54
THERMOCOUPLE PROTECTION TUBE MATRIX.................................................................................... 57
LETTER OF CALIBRATION...................................................................................................................... 58
TABLE 1 – TOLERANCES ON INITIAL VALUES OF EMF VS. TEMPERATURE FOR TCS....................... 59
TABLE 2 – SUGGESTED UPPER TEMPERATURE LIMITS FOR PROTECTED TC ................................... 60
THERMOCOUPLE ELEMENTS, JUNCTIONS AND SHEATHS ................................................................. 61
TABLE 3 – UNITED STATES COLOR CODES FOR SINGLE AND DUPLEX INSULATED TC WIRE........ 63
TABLE 4 – IEC COLOR CODES FOR INSULATED TC WIRE AND EXTENSION MATERIALS................ 64
TEMPERATURE CONVERSION TABLE..................................................................................... 65
INCH TO MILLIMETRE CONVERSION TABLE.......................................................................... 66
GLOSSARY OF TERMS............................................................................................................. 67
INTRODUCTION

Pyrotek® is a global engineering leader and innovator of performance-improving technical solutions, integrated systems design and
consulting services for customers in the aluminium industry. We have global resources and dependable local support in more than 35
countries with over 60 locations. Our products and solutions are in use around the world in automotive, aerospace, rail transportation
and high-tech manufacturing. Privately-owned since 1956, our deep-rooted values of integrity and collaborative problem-solving uphold
our mission to improve customer performance.

Temperature Sensing Solutions – From the Smelter to the Foundry

Pyrotek provides comprehensive temperature sensing solutions for aluminium manufacturing and industrial applications, from primary
aluminium smelting and casting to aluminium foundry and die casting processes. This includes a complete line of thermocouple elements,
protective tubes and assemblies for a broad range of molten metal applications. Pyrotek offers a wide variety of thermocouple protection
tube material options for almost every high temperature application: cast iron (plain or enameled), reinforced fibreglass material (RFM®)
and high-performance ceramics and standard refractory types.

Our global manufacturing locations are available to readily supply our customers and provide local service and support. Our global sales
engineers are trained to assist in selecting the correct temperature measuring solutions for your typical and custom or specific application.

Refer to the Thermocouple Protection Tubes section of this catalog for material options and properties and to the following table for
information regarding primary aluminium and foundry process applications.

Pyrotek is committed to:

• Customer Satisfaction
• Integrity
• Reliability, Quality and Service
• Environmental Awareness
• Profitable Growth
• Employee Development
• Partnerships with Customers and Suppliers

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 INTRODUCTION

PRIMARY ALUMINIUM THERMOCOUPLES

ANODE BAKE
LOCATION PYROTEK MODEL TC TYPE TCPT TYPE † AVERAGE LIFE QUANTITY USED
I2 series N Inconel 601 2–3 months 1 per flue opening
Firing frame—flue
I2 series S Re-SiC 12 months 1 per flue opening
I2 series N 310SS or 253 MA 1–2 months 1–4 per pit section
Firing frame—pit
I2 series N Inconel 601 2–3 months 1–4 per pit section
M2 series Not specified.
Temperature pressure
K Can use Inconel 601 2–4 months 1 per flue section
ramp exhaust I2 series to extend life
Exhaust mainifold M2 series K Not required 2–4 months Minimum 1 per manifold
Isotherm I9 series K Cast iron Single use Minimum 2 per section
ELECTROLYSIS POTS
Cryolite I2 series K Not required Multiple dips One per operator
Molten electrolyte bath Quick tips K Not necessary Multiple dips One per operator
CASTHOUSE (REMELT)
I9 series Cast Iron Plain
K 1–2 weeks 1–2 per furnace
T2 series Cast Iron Enamel
I5 series
I6 series K Pinnacle 1–2 months 1–2 per furnace
Immersion T1 series
I5 series
I6 Series K RFM 3–6 months 1–2 per furnace
T1 series
I2 series
I3 series K Inconel 601 7–9 months 1–2 per roof
IP series
Atmospheric
I4 series K Alumina 12 months 1–2 per roof
I4 series K Mullite 12 months 1–2 per roof
Sampling Quick tips K Not necessary Multiple dips One per operator
†Typical average operation life with proper maintenance practice.
*Not recommended in high solid impact environment.

I2 Series I9 Series Quick Tips

M2 Series M3 Series P4 Series

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INTRODUCTION

FOUNDRY THERMOCOUPLES
Atmospheric Atmospheric Pressurized
Die / Mould Pressurized Immersion Thermocouple Thermocouple Immersion Die / Mould Immersion Atmospheric
Thermocouple Thermocouple Thermocouple Thermocouple Thermocouple Thermocouple

MOLTEN METAL IMMERSION

PYROTEK MODEL TC TYPE TCPT TYPE RATED TEMPERATURE †AVERAGE LIFE
I5 or I6 series K RFM 800°C (1472°F) 3–6 months
I7 or I8 series K Sialon, B100/SiN 1100°C (2012°F) 10–13 months
I7 or I8 series K O'-Sialon 1100°C (2012°F) 2–4 months
I5 or I6 series K Pinnacle 1100°C (2012°F) 3–6 months
ATMOSPHERIC
I2 series K Inconel 601 1260°C (2300°F) 7–9 months
I4 series K Alumina 1600°C (2912°F) 12 months
I4 series K Mullite 1400°C (2552°F) 12 months
†Typical average operation life with proper maintenance practice.
**Not recommended for pressurized immersion.

I5 Series–Pinnacle I5 Series–RFM I7 Series–Sialon, B100 / SiN, O'-Sialon

DIE AND MOULD

PYROTEK MODEL TC TYPE DESCRIPTION RATED TEMPERATURE †AVERAGE LIFE
90° with compression fitting or
P1 series K 870°C (1600°F) Replace during maintenance
bayonet adapter
Spring adjustable with bayonet
P2 series K 870°C (1600°F) Replace during maintenance
adapter
Armor adjustable with bayonet
P3 series K 870°C (1600°F) Replace during maintenance
adapter
M4 series K MgO with extension wire 1260°C (2300°F) Replace during maintenance

SAMPLING
Specially coated heat resistance
Quick tip K 1260°C (2300°F) Multiple dips
steel TC with lance
M2 series K MI element with plug / jack 1260°C (2300°F) Multiple dips
MI element with extension and
M4 series K 1260°C (2300°F) Multiple dips
plug / jack
M2 series K Sleeved and coated MI element 1260°C (2300°F) Multiple dips
with plug / jack
†Typical average operation life with proper maintenance practice.

Quick Tip P1 series M2 series with high-temp sleeve and coating P2 series

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 I SERIES
I1 SERIES – BASE METAL AND NOBLE METAL TC ELEMENTS
Pyrotek’s straight base metal (K and J) and noble metal (R, S, and B) thermocouple elements are for the typical protection tube
assemblies utilized in industrial applications. Special construction styles may be available upon request.

Base Metal Element

1 2 3 4 5 6
I1 — —

1. MODEL UNIT SYSTEM 6. ELEMENT LENGTH – “L” DIMENSION

E Imperial XX Enter the length in millimetres or inches.

M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
5. WELD JUNCTION STYLE
to determine all the item’s measurements.
S Butt Weld
2. WIRE SIZE – MM (AWG) T Twist and Weld (Standard)
8 3.25 (8)
4. INSULATOR TYPE
11 2.31 (11)
14 1.63 (14) R Round Insulators
N No Insulators; Bare Element Only
3. THERMOCOUPLE CALIBRATION V Oval Insulators
J Type J
K Type K
N Type N
JJ Dual Type J
KK Dual Type K
NN Dual Type N
Other calibrations are available on request.

Noble Metal Element

1 2 3 4 5

I1 — —

1. MODEL UNIT SYSTEM 5. ELEMENT LENGTH – “L” DIMENSION

E Imperial XX Enter the length in millimetres or inches.

M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 4. INSULATOR TYPE
N No Insulators; Bare Element Only
2. WIRE SIZE – MM (AWG) R Round Solid Insulator
24 0.51 (24)
26 0.41 (26)
28 0.32 (28)

3. THERMOCOUPLE CALIBRATION
R Type R
S Type S
B Type B

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 IA SERIES – ANGLE BASE METAL TC ELEMENT
Pyrotek’s angle base metal thermocouples are elements for the typical angle assemblies utilized in industrial applications.
Special construction styles may be available upon request.

1 2 3 4 5 6 7
IA — V — —

1. MODEL UNIT SYSTEM 7. COLD LEG LENGTH – “CL” DIMENSION

E Imperial XX Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 6. HOT LEG LENGTH – “HL” DIMENSION
XX Enter the length in millimetres or inches.
2. WIRE SIZE – MM (AWG) For fractional lengths, enter 2(1/2) for 2-½ inches
8 3.25 (8)
11 2.31 (11) 5. WELD JUNCTION STYLE
14 1.63 (14) S Butt Weld
T Twist and Weld (Standard)
3. THERMOCOUPLE CALIBRATION
J Type J
K Type K
N Type N
JJ Dual Type J
KK Dual Type K
NN Dual Type N
Other calibrations are available on request.

4. INSULATOR TYPE
V Oval Insulators

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IP SERIES – METAL ALLOY PROTECTION TUBES
Metal alloy protection tubes are replacement tubes for thermocouple assemblies. These tubes are for general purpose industrial
applications. Special materials and sizes available upon request.

1 2 3 4 5 5.1

IP — — — —

1. MODEL UNIT SYSTEM 5.1 INSERTION LENGTH – “U” DIMENSION

E Imperial XX Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 5. OPTIONAL MOUNTING CHOICES
00 No Optional Fitting
2. PIPE SIZE – MM (IN NPT) FX Adjustable Flange with Set Screw
C 15 (1/2) Sch40 FD Welded SS Bushing 20 mm (3/4 in NPT)
D 20 (3/4) Sch40 FE Welded SS Bushing 25 mm (1 in NPT)
GD Welded Steel Bushing 20 mm (3/4 in NPT)
Other sizes are available on request. GE Welded Steel Bushing 25 mm (1 in NPT)

3. PROTECTION TUBE MATERIAL 4. TUBE LENGTH – “L” DIMENSION

34 304SS XX Enter the length in millimetres or inches.
36 316SS For fractional lengths, enter 2(1/2) for 2-½ inches
30 310SS
61 INCONEL 601

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 I2 SERIES – BASE THERMOCOUPLE ELEMENT WITH STEEL
THERMOCOUPLE PROTECTION TUBE
Pyrotek’s metal protection tube style assemblies are most commonly utilized in medium to high temperature industrial
applications. Special protection tube materials and construction styles are available upon request.

1 2 3 4 5 6 7 8 9 9.1 10
I2 — V — — — —

1. MODEL UNIT SYSTEM 10. SCREW COVER HEAD STYLE

E Imperial 00 No Head and Block
M Metric 41 Cast Aluminium Screw Cover Head
Specify the required unit system and use it
42 Cast Iron Screw Cover Head
to determine all the item’s measurements.
9.1. INSERTION LENGTH - “U” DIMENSION
2. WIRE SIZE – MM (AWG) XX Enter two-digit length for millimetres
8 3.25 (8) or inches. Example: 09, 20
11 2.31 (11)
14 1.63 (14) 9. OPTIONAL MOUNTING CHOICES
MI Ungrounded MI Cable 00 No optional fitting
FX Adjustable Flange with Set Screw
3. THERMOCOUPLE CALIBRATION FD Welded SS Bushing 20 mm (3/4 in NPT)
E Type E FE Welded SS Bushing 25 mm (1 in NPT)
J Type J GD Welded Steel Bushing 20 mm (3/4 in NPT)
K Type K GE Welded Steel Bushing 25 mm (1 in NPT)
N Type N
JJ Dual Type J 8. TUBE LENGTH – “L” DIMENSION
KK Dual Type K XX Enter the length in millimetres or inches.
NN Dual Type N For fractional lengths, enter 2(1/2) for 2-½ inches
Other calibrations are available on request.
7. PROTECTION TUBE MATERIAL
4. INSULATOR TYPE
34 304SS
V Oval Insulators 30 310SS
32 312SS
If using option MI from Box 2, skip this option. 36 316SS
60 INCONEL 600
5. WELD JUNCTION STYLE 61 INCONEL 601
S Butt Weld MON MONEL
T Twist and Weld (Standard)
If using option MI from Box 2, skip this option.

6. PIPE SIZE – MM (IN NPT)

C 15 (1/2) Sch40
D 20 (3/4) Sch40
Other sizes are available on request.

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

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I3 SERIES – ANGLE STEEL THERMOCOUPLE PROTECTION TUBE
WITH BASE THERMOCOUPLE ELEMENT
Pyrotek’s angle metal protection tube style assemblies are most commonly utilized in medium to high temperature industrial
applications. Special protection tube materials and construction styles are available upon request.

1 2 3 4 5 6 7 8 9 10
I3 — V — — — —

1. MODEL UNIT SYSTEM 10. SCREW COVER HEAD STYLE

E Imperial 00 No Head and Block
M Metric 41 Cast Aluminium Screw Cover Head
42 Cast Iron Screw Cover Head
Specify the required unit system and use it
to determine all the item’s measurements.
9. COLD LENGTH (STEEL PIPE EXTENSION) – “CL” DIMENSION
2. WIRE SIZE – MM (AWG) XX Enter the length in millimetres or inches.
8 3.25 (8) For fractional lengths, enter 2(1/2) for 2-½ inches
11 2.31 (11)
14 1.63 (14) 8. HOT LEG LENGTH – “HL” DIMENSION
MI Ungrounded MI Cable XX Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. THERMOCOUPLE CALIBRATION
E Type E 7. PROTECTION TUBE MATERIAL
J Type J 34 304SS
K Type K 36 316SS
N Type N 30 310SS
JJ Dual Type J 61 INCONEL 601
KK Dual Type K
NN Dual Type N 6. PIPE SIZE – MM (IN NPT)
Other calibrations are available upon request. C 15 (1/2) Sch40
D 20 (3/4) Sch40
4. INSULATOR TYPE
V Oval Insulators
If using option MI from Box 2, skip this option.

5. WELD JUNCTION STYLE

S Butt Weld
T Twist and Weld (Standard)
If using option MI from Box 2, skip this option.

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

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 I4 SERIES – MGO, BASE METAL TC METAL TC ELEMENTS
Pyrotek’s ceramic protection tube assemblies are typically utilized in temperatures exceeding 1204°C (2200°F). The noble
metal elements offer the advantages of handling higher temperatures and providing greater accuracy than base metal elements.

1 2 3 4 5 6 6.1 7
I4 — — — —

1. MODEL UNIT SYSTEM 7. SCREW COVER HEAD

E Imperial 00 No Head and Block

M Metric 41 Cast Aluminium Screw Cover Head
42 Cast Iron Screw Cover Head
Specify the required unit system and use it
to determine all the item’s measurements.
6.1. OPTIONS – FIGURE A

2. WIRE SIZE – MM (AWG) FX Adjustable Flange with Set Screw

8 3.25 (8)
6. TUBE LENGTH – “L” DIMENSION
11 2.31 (11)
14 1.63 (14) XX Enter the length in millimetres or inches.
24 0.51 (24) For fractional lengths, enter 2(1/2) for 2-½ inches
26 0.41 (26)
28 0.32 (28) 5. CERAMIC PROTECTION TUBE DIAMETER AND FITTINGS
MI Ungrounded MI Cable
Code Description and Order Inner Outer Process Termination
Instructions Diameter – Diameter – Thread – Thread –
3. THERMOCOUPLE CALIBRATION
mm (in) mm (in) mm (in NPT) mm (in NPT)
K Type K
LC Steel Close Nipple 8 (1/4) 10 (3/8) 15 (1/2) 15 (1/2)
N Type N
R Type R L(X) Steel Pipe Nipple 8 (1/4) 10 (3/8) 15 (1/2) 15 (1/2)
S Type S (Specify “X” Dimension)
KK Dual Type K
NN Dual Type N LH Steel Hex Nipple 8 (1/4) 10 (3/8) 15 (1/2) 15 (1/2)
RR Dual Type R NC Steel Close Nipple 11 (7/16) 19 (11/16) 20 (3/4) 20 (3/4)
SS Dual Type S
N(X) Steel Pipe Nipple 11 (7/16) 19 (11/16) 20 (3/4) 20 (3/4)
Other calibrations are available on request. (Specify “X” Dimension)

4. CERAMIC PROTECTION TUBE TYPE

NH Steel Hex Nipple 11 (7/16) 19 (11/16) 20 (3/4) 15 (1/2)
M Mullite PC Steel Close Nipple 15 (1/2) 20 (3/4) 20 (3/4) 20 (3/4)
A Alumina P(X) Steel Pipe Nipple 15 (1/2) 20 (3/4) 20 (3/4) 20 (3/4)
(Specify “X” Dimension)
PH Steel Hex Nipple 15 (1/2) 20 (3/4) 20 (3/4) 15 (1/2)
QC Steel Close Nipple 18 (5/8) 22 (7/8) 25 (1) 25 (1)
Q(X) Steel Pipe Nipple 18 (5/8) 22 (7/8) 25 (1) 25 (1)
(Specify “X” Dimension)
QH Steel Hex Nipple 18 (5/8) 22 (7/8) 25 (1) 20 (3/4)

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

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I5 SERIES – STRAIGHT MGO, BASE METAL TC ASSEMBLIES:
REFRACTORY/PIPE REINFORCED ASSEMBLIES
They provide non-wetting attributes, a steel inner tube that provides support for strength and assembly mounting options and
extended life.

Figure A Figure B

1 2 3 4 5 6 7 8 8.1

I5 — — — — — —

1. MODEL UNIT SYSTEM 8.1. SHEATH TERMINATION OPTIONS

E Imperial H High Temperature Connectors
M Metric 427°C (800°F)
Specify the required unit system and use it
C Compression Tube Adaptor
to determine all the item’s measurements. Holding Plug to Sheath
Only add the option designation letter if those options
2. WIRE SIZE – MM (AWG) are desired.
8 3.25 (8)
11 2.31 (11) 8. SHEATH TERMINATION
14 1.63 (14) 21 Standard Male Plug
MI Ungrounded MI Cable 22 Standard Female Jack
23 Standard Plug/Jack
3. THERMOCOUPLE CALIBRATION 24 Standard Solid Pin Plug
K Type K The temperature rating for all standard temperature
KK Dual Type K plugs is 425°F (218°C).
Other calibrations are available on request.
7. EXTENSION LENGTH – “X” DIMENSION

4. THERMOCOUPLE PROTECTION TUBE MATERIAL XX Enter the length in millimetres or inches.

For fractional lengths, enter 2(1/2) for 2-½ inches
Code Description Standard Stocked Lengths–mm (in)
RFM Reinforced Fibreglass 305, 457, 610, 762, 914, 1219 6. SCREW COVER HEAD OR EXTENSION
Material TC Protection (12, 18, 24, 30, 36, 48) 41 Cast Aluminium Figure A
Tube Special lengths are available. 42 Cast Iron
PIN Pinnacle Cast 152, 305, 457, 610, 762, 914, 1219 00 MI Cable Extension Beyond Figure B
O’-Sialon/Silicon (6, 12, 18, 24, 30, 36, 48) Thermocouple Protection Tube*
Carbide Special lengths are available.
Protection Tube *For MI Cable Extension Option (Figure B), continue building part
number using boxes 7, 8 and 8.1.
RSC SiC-Graphite Protection 305, 457, 610, 762, 914, 1219
Tube (12, 18, 24, 30, 36, 48)

5. TUBE LENGTH – “L” DIMENSION

XX For the length order code, insert the whole millimetres
(inches) dimension from Box 4. Example: 120 for 120
millimetres tube length

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

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 I6 SERIES – ANGLED MGO, BASE METAL TC ASSEMBLIES:
REFRACTORY/PIPE REINFORCED ASSEMBLIES
They provide non-wetting attributes, a steel inner tube that provides support for strength and assembly mounting options and
extended life.

Figure A Figure B

1 2 3 4 5 6 7 8 9 9.1

I6 — — — — — — —

1. MODEL UNIT SYSTEM 9.1. SHEATH TERMINATION OPTIONS

E Imperial H High Temperature Connectors
M Metric 427°C (800°F)
Specify the required unit system and use it C Compression Tube Adaptor
to determine all the item’s measurements. Holding Plug to Sheath
Only add the option designation letter if those options
2. WIRE SIZE – MM (AWG) are desired.
8 3.25 (8)
11 2.31 (11) 9. SHEATH TERMINATION
14 1.63 (14) 21 Standard Male Plug
MI Ungrounded MI Cable 22 Standard Female Jack
23 Standard Plug/Jack
3. THERMOCOUPLE CALIBRATION 24 Standard Solid Pin Plug
K Type K The temperature rating for all standard temperature
KK Dual Type K plugs is 218°C (425°F).
Other calibrations are available upon request.
8. EXTENSION LENGTH – “X” DIMENSION
4. THERMOCOUPLE PROTECTION TUBE MATERIAL XX Enter the length in millimetres or inches.
Code Description Standard Stocked Lengths – For fractional lengths, enter 2(1/2) for 2-½ inches
mm (in)
7. SCREW COVER HEAD OR EXTENSION
RFM Reinforced Fibreglass 305, 457, 610, 762, 914, 1219
Material TC Protection (12, 18, 24, 30, 36, 48) 41 Cast Aluminium Figure A
Tube Special lengths are available. 42 Cast Iron

PIN Pinnacle Cast 152, 305, 457, 610, 762, 914, 1219 00 MI Cable Extension Beyond Figure B
O’-Sialon/Silicon (6, 12, 18, 24, 30, 36, 48) Thermocouple Protection Tube*
Carbide Protection Tube Special lengths are available. *For MI Cable Extension Option (Figure B), continue building part
number using boxes 7, 8, 9, and 9.1.
RSC SiC Protection Tube 305, 457, 610, 762, 914, 1219
(12, 18, 24, 30, 36, 48)

5. HOT LENGTH – “HL” DIMENSION

XX For the length order code, insert the whole millimetres
(inches) dimension from Box 4. Example: 120 for 120
millimetres tube length

6. COLD LENGTH – “CL” DIMENSION (STEEL PIPE EXTENSION)

XX Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 15 pyrotek.com
I7 SERIES – STRAIGHT MGO, BASE METAL TC ASSEMBLIES:
REFRACTORY TUBE ASSEMBLIES
These assemblies provide non-wetting attributes, as well as higher life expectancy in applications with a limited impact from
solids.

Figure A Figure B

1 2 3 4 5 6 7 8 8.1

I7 — — — — — —

1. MODEL UNIT SYSTEM 8.1. SHEATH TERMINATION OPTIONS

E Imperial H High Temperature Connectors
M Metric 427°C (800°F)
Specify the required unit system and use it
C Compression Tube Adaptor
to determine all the item’s measurements. Holding Plug to Sheath
Only add the option designation letter if those options
2. WIRE SIZE – MM (AWG) are desired.
8 3.25 (8)
11 2.31 (11) 8. SHEATH TERMINATION
14 1.63 (14) 21 Standard Male Plug
MI Ungrounded MI Cable 22 Standard Female Jack
23 Standard Plug/Jack
3. THERMOCOUPLE CALIBRATION 24 Standard Solid Pin Plug
K Type K The temperature rating for all standard temperature
KK Dual Type K plugs is 218°C (425°F).
Other calibrations are available upon request.
7. EXTENSION LENGTH – “X” DIMENSION

4. THERMOCOUPLE PROTECTION TUBE MATERIAL XX Enter the length in millimetres or inches.

For fractional lengths, enter 2(1/2) for 2-½ inches
Code Description Standard Stocked Lengths –
mm (in)
6. SCREW COVER HEAD OR EXTENSION
OSI O’-Sialon/Silicon Carbide 300, 400, 500, 600, 700, 800, 41 Cast Aluminium Figure A
Protection Tube, 28 x 16 mm 900, 1000, 1200 (12, 16, 20, 24, 42 Cast Iron
(1.1 x 0.63 in) OD x ID 28, 32, 35, 39, 47)
00 MI Cable Extension Beyond Figure B
B100 Sialon B100 Ceramic 200, 300, 400, 460, 500, 600, Thermocouple Protection Tube*
Protection Tube, 28 x 16 mm 650, 700, 750, 800, 850, 900,
(1.1 x 0.63 in) OD x ID 1000 (8, 12, 16, 18, 20, 24, 26, *For MI Cable Extension Option (Figure B), continue building part
28, 30, 32, 34, 35, 39) number using boxes 7, 8 and 8.1.
SIA Silicon Nitride Thermocouple 400, 500, 600, 700, 800, 900,
Protection Tube, 28 x 16 mm 1000 (16, 20, 24, 28, 32, 35,
(1.1 x 0.63 in) OD x ID 39, 47)

5. TUBE LENGTH – “L” DIMENSION – MM (IN)

30 300 (12)
40 400 (16)
50 500 (20)
60 600 (24)
70 700 (28)
80 800 (32)
90 900 (35)
10 1000 (40)
11 1100 (43)
12 1200 (47)

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 16
 I8 SERIES – ANGLED MGO, BASE METAL TC ASSEMBLIES:
REFRACTORY TUBE ASSEMBLIES
These assemblies provide non-wetting attributes, as well as higher life expectancy in applications where limited impact from
solids occurs.

Figure A Figure B

1 2 3 4 5 6 7 8 9 9.1

I8 — — — — — — —

1. MODEL UNIT SYSTEM 9.1. SHEATH TERMINATION OPTIONS

E Imperial H High Temperature Connectors
M Metric 427°C (800°F)
Specify the required unit system and use it
C Compression Tube Adaptor
to determine all the item’s measurements. Holding Plug to Sheath
Only add the option designation letter if those options
2. WIRE SIZE – MM (AWG) are desired.
8 3.25 (8)
11 2.31 (11) 9. SHEATH TERMINATION
14 1.63 (14) 21 Standard Male Plug
MI Ungrounded MI Cable 22 Standard Female Jack
23 Standard Plug/Jack
3. THERMOCOUPLE CALIBRATION 24 Standard Solid Pin Plug
K Type K The temperature rating for all standard temperature plugs is 218°C (425°F).
KK Dual Type K
Other calibrations are available on request. 8. EXTENSION LENGTH IN WHOLE INCHES – “X”
DIMENSION

4. THERMOCOUPLE PROTECTION TUBE MATERIAL XX Enter the length in millimetres or inches.

For fractional lengths, enter 2(1/2) for 2-½ inches
Code Description Standard Stocked Lengths –
mm (in)
7. SCREW COVER HEAD OR EXTENSION
OSI O’-Sialon/Silicon Carbide 300, 400, 500, 600, 700, 800,
Protection Tube, 28 x 16 900, 1000, 1200 (12, 16, 20, 24, 41 Cast Aluminium Figure A
mm (1.1 x 0.63 in) OD x ID 28, 32, 35, 39, 47) 42 Cast Iron

B100 Sialon B100 Ceramic 200, 300, 400, 460, 500, 600, 00 MI Cable Extension Beyond Figure B
Protection Tube, 28 x 16 650, 700, 750, 800, 850, 900, Thermocouple Protection Tube*
mm (1.1 x 0.63 in) OD x ID 1000 (8, 12, 16, 18, 20, 24, 26, *For MI Cable Extension Option (Figure B), continue building part
28, 30, 32, 34, 35, 39) number using boxes 7, 8, 9, and 9.1.
SIA Silicon Nitride 400, 500, 600, 700, 800, 900,
Thermocouple Protection 1000 (16, 20, 24, 28, 32, 35, 6. COLD LEG LENGTH – “CL” DIMENSION
(STEEL PIPE EXTENSION)
Tube, 28 x 16 mm 39, 47)
(1.1 x 0.63 in) OD x ID XX Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches

5. TUBE HOT LEG LENGTH – “HL” DIMENSION

30 300 (12)
40 400 (16)
50 500 (20)
60 600 (24)
70 700 (28)
80 800 (32)
90 900 (35)
10 1000 (40)
NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND 11 1100 (43)
WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES. 12 1200 (47)

JAN-18-EN-1128 PYROTEK INC.

Page 17 pyrotek.com
I9 SERIES – STRAIGHT MGO, BASE METAL TC ASSEMBLIES:
CAST IRON AND ENAMELED CAST IRON
Pyrotek’s cast iron thermocouples are designed to be utilized where a high degree of impact from solids is expected.

Figure A Figure B

1 2 3 4 5 6 7 8 9 9.1 10

I9 — — — — — — —

1. MODEL UNIT SYSTEM 10. HARDWARE OPTION – “U”

DIMENSION
E Imperial
M Metric T(XX) 13 mm (1/2 in) Diameter x 152 mm
(6 in) Steel Bar Welded to Pipe
Specify the required unit system and use it
Extension
to determine all the item’s measurements.
XX=Insert “U” Dimension.
2. WIRE SIZE – MM (AWG)
9.1. TERMINATION OPTIONS
8 3.25 (8)
11 2.31 (11) C Cable Clamp for Plug/Jack
14 1.63 (14) H High Temp Plug/Jack
MI Ungrounded MI Cable (Standard Size Only; 427°C/800°F)
The temperature rating for all standard plugs and jacks
3. THERMOCOUPLE CALIBRATION is 218°C (425°F). Leave the box blank if no options are
K Type K needed.
KK Dual Type K
KKK Triple Type K 9. LEAD WIRE TERMINATION STYLE

Other calibrations are available on request. 31 51 mm (2 in) Split Leads

32 51 mm (2 in) Leads with Spade Lugs
4. THERMOCOUPLE PROTECTION TUBE MATERIAL 21 *Standard Plug
22 *Standard Jack
Code Description Standard Stocked Lengths – 23 *Standard Plug/Jack
mm (in) 11 Miniature Plug
CIP Uncoated Cast Iron 305, 457, 610, 762, 914, 12 Miniature Female Jack
Thermocouple Protection 1219, 1372, 1524, 1676, 13 Miniature Plug/Jack
Tube 1829, 2438, 2743 (12, 18, *The temperature rating for all standard plugs and jacks is
24, 30, 36, 48, 54, 60, 66, 72, 218°C (425°F).
96, 108)
CIR Red Enamel Coated 305, 457, 610, 762, 914, 8. LEAD WIRE LENGTH – “X” DIMENSION
Cast Iron Thermocouple 1219, 1372, 1524, 1676, XXX Enter the length in millimetres or inches.
Protection Tube 1829, 2235, 2438 (12, 18, For fractional lengths, enter 2(1/2) for 2-½ inches
24, 30, 36, 48, 54, 60, 66, 72,
88, 96) 7. SCREW COVER HEAD OR EXTENSION

5. TUBE LENGTH – “L” DIMENSION

41 Cast Aluminium Screw Cover Head
42 Cast Iron Screw Cover Head
XX For the length order code, insert the whole
millimetres (inches) dimension from Box 4. For the following selections, continue building the part number using boxes 8–10.
Example: 120 for 120 millimetres tube length 00 MI Cable Extension Beyond Thermocouple Protection Tube
E Hi-Temp Fibreglass Solid Wire 722°C (1300°F)
6. PIPE NIPPLE EXTENSION LENGTH –“N” F Hi-Temp Fibreglass Solid Wire With Stainless Overbraid
DIMENSION 722°C (1300°F)
XX Insert the length of the pipe nipple extension G Hi-Temp Fibreglass Solid Wire With Flex Armor
required – 25 mm (1 in) minimum 722°C (1300°F)
Example: 25
Standards: 25, 152, 305, 457 mm (1, 6, 12, 18 in)

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 18
 I10 SERIES – ANGLED MGO, BASE METAL TC ASSEMBLIES: CAST
IRON AND ENAMLED CAST IRON
Pyrotek’s cast iron thermocouples are designed to be utilized where a high degree of impact from solids is expected.

Figure A Figure B

1 2 3 4 5 6 7 8 9 10 10.1
I10 — — — — — — — —

1. MODEL UNIT SYSTEM 10.1. SHEATH TERMINATION OPTIONS

E Imperial H High Temperature Connectors
M Metric 427°C (800°F)
Specify the required unit system and use it to C Compression Tube Adaptor
determine all the item’s measurements. Holding Plug to Sheath
Only add the option designation letter if those options
2. WIRE SIZE – MM (AWG) are desired.
8 3.25 (8)
11 2.31 (11) 10. SHEATH TERMINATION
14 1.63 (14) 21 Standard Male Plug
MI Ungrounded MI Cable 22 Standard Female Jack
23 Standard Plug/Jack
3. THERMOCOUPLE CALIBRATION 24 Standard Solid Pin Plug
K Type K The temperature rating for all standard temperature
KK Dual Type K plugs is 218°C (425°F).
KKK Triple Type K
Other calibrations are available on request. 9. EXTENSION LENGTH – “X” DIMENSION
XX Insert length in whole inches. For fractional lengths,
4. THERMOCOUPLE PROTECTION TUBE MATERIAL specify as follows.
Code Description Standard Stocked Lengths – mm (in) Example: 12(1/2) for 12-½ Inches

CIP Uncoated Cast 305, 457, 610, 762, 914, 1219, 1372, 8. SCREW COVER HEAD OR EXTENSION
Iron Thermocouple 1524, 1676, 1829, 2438, 2743 (12, 18,
Protection Tube 24, 30, 36, 48, 54, 60, 66, 72, 96, 108) 41 Cast Aluminium Figure A
42 Cast Iron
CIR Red Enamel 305, 457, 610, 762, 914, 1219, 1372,
Coated Cast Iron 1524, 1676, 1829, 2438, 2743, 2235, 00 MI Cable Extension Beyond Figure B
Thermocouple 2438 (12, 18, 24, 30, 36, 48, 54, 60, Thermocouple Protection Tube*
Protection Tube 66, 72, 88, 96) *For MI Cable Extension Option (Figure B), continue building the
part number using boxes 8, 9, 10 and 10.1.
5. HOT LENGTH – “HL” DIMENSION
XX For the length order code, insert the whole millimetres (inches) 7. COLD LENGTH – “CL” DIMENSION (STEEL PIPE EXTENSION)
dimension from Box 4. Example: 120 for 120 millimetres tube XX Enter the length in millimetres or inches.
length For fractional lengths, enter 2(1/2) for 2-½ inches

6. PIPE NIPPLE EXTENSION LENGTH – “N” DIMENSION

XX Insert the length of the pipe nipple extension
required – 25 mm (1 in) minimum
Example: 25
Standards: 25, 152, 305, 457 mm (1, 6, 12, 18 in)

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 19 pyrotek.com
QUICK TIPS
Quick response sampling thermocouples are used to measure the temperature of nonferrous molten metals. Proprietary coating
on each thermocouple tip protects the surface sheath without diminishing its rapid response time.

GLOBAL PART DESCRIPTION DESIGN

NUMBER

P009-BN008-QT-A Quick Tips, Type K, 203 mm (8 in) Tip, Grounded, Coated, No Lance or Lead Wire, with Standard Plug See Figure A
Quick Tips, Type K, 203 mm (8 in) Tip, Grounded, Coated 1829 mm (72 in) Lead Wire with
P009-BN008-QT-AA See Figure H
Round Ceramic Insulators, with CF (Crimp Fork)
P009-BN008-QT-K Quick Tips, Type K, 203 mm (8 in) Tip, Grounded, Coated, 737 mm (31 in) Lead Wire, with Standard Plug See Figure B
P009-BN008-QT-L Quick Tips, Type K, 203 mm (8 in) Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-BN008-QT-M Quick Tips, Type K, 203 mm (8 in) Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, with Standard Plug See Figure B
P009-BN008-QT-N Quick Tips, Type K, 203 mm (8 in) Tip, Grounded, Coated, Mounting Plate, with Standard Plug See Figure D
P009-BN008-QT-U Quick Tips, Type K, 203 mm (8 in) Flat Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, with Standard Plug See Figure E
P009-BN010-QT-A Quick Tips, Type K, 254 mm (10 in) Round Tip, Grounded, Coated, 1524 mm (60 in) lead wire with Armored Conduit, See Figure K
Mounting Plate, with Standard Plug
P009-BN012-QT-B Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, No Lance or Lead Wire, with Standard Plug See Figure A
P009-BN012-QT-C Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, 305 mm (12 in) Lead Wire, with Standard Plug See Figure B
P009-BN012-QT-D Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, with Standard Plug See Figure B
P009-BN012-QT-E Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, 1346 mm (55 in) Lead Wire, with Standard Plug See Figure B
P009-BN012-QT-N Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, Mounting Plate, with Standard Plug See Figure D
P009-BN012-QT-Q Quick Tips, Type K, 305 mm (12 in) Round Tip, Ungrounded, Coated, 305 mm (12 in) Lead Wire, with Standard Plug See Figure F
P009-BN012-QT-R Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, 1092 mm (43 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-BN012-QT-S Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, 381 mm (15 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-BN012-QT-SA Quick Tips, Type K, 305 mm (12 in) Tip, Grounded, Coated, 2100 mm (83 in) Lead Wire, CF (Crimp Fork) See Figure H
P009-BN012-J-QT-B Quick Tips, Type J, 305 mm (12 in) Tip, Grounded, Coated, No Lance or Lead Wire, with Standard Plug See Figure A
P009-BN015-QT-F Quick Tips, Type K, 381 mm (15 in) Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-BN015-QT-G Quick Tips, Type K, 381 mm (15 in) Tip, Grounded, Coated, 3048 mm (120 in) Lead Wire, with Standard Plug See Figure B
P009-BN015-QT-GA Quick Tips, Type K, 381 mm (15 in) Tip, Grounded, Coated, 305 mm (12 in) Bead Lead Wire, with Standard Plug See Figure H
P009-BN015-QT-T Quick Tips, Type K, 381 mm (15 in) Tip, Grounded, Coated, 1397 mm (55 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-BN015-QT-Y Quick Tips, Type K, 381 mm (15 in) Tip, Grounded, Coated, 1143 mm (45 in) Lead Wire, with No Connector See Figure G
P009-BN015-QT-Z Quick Tips, Type K, 381 mm (15 in) Tip, Grounded, Coated, 1829 mm (72 in) Lead Wire, CF (Crimp Fork) See Figure H
P009-BN018-QT-H Quick Tips, Type K, 457 mm (18 in) Tip, Grounded, Coated, No Lance or Lead Wire, with Standard Plug See Figure A
P009-BN018-QT-V Quick Tips, Type K, 457 mm (18 in) Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-BN018-QT-P Quick Tips, Type K, 457 mm (18 in) Tip, Grounded, Coated, Mounting Plate, with Standard Plug See Figure D
P009-BN030-QT-J Quick Tips, Type K, 762 mm (30 in) Tip, Grounded, Coated, 1041 mm (43 in) Lead Wire, CF (Crimp Fork) See Figure C
P009-L043-QT-A Lance with Handle, Cable and Connector to Suit for a 1041 mm (43 in) Lead Wire See Figure J

NOTE: NOT ALL DESIGNS AND CONFIGURATIONS ARE LISTED.

PLEASE CONTACT PYROTEK FOR CUSTOM CONFIGURATIONS

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 20
 QUICK TIPS

FIGURE A FIGURE F

TIP LENGTH LEAD LENGTH

STANDARD TIP LENGTH

STANDARD
PLUG PLUG

FIGURE B FIGURE G

TIP LENGTH LEAD WIRE LENGTH STANDARD

PLUG TIP LENGTH LEAD WIRE LENGTH

FIGURE C FIGURE H

CRIMP FORK
TIP LENGTH LEAD LENGTH
75 mm

TIP LENGTH LEAD WIRE LENGTH

CRIMP FORK

FIGURE D FIGURE J

TIP LENGTH

STANDARD
PLUG

FIGURE E FIGURE K

MOUNTING PLATE
STANDARD
TIP LENGTH LEAD WIRE LENGTH PLUG
LEAD WIRE LENGTH
TIP LENGTH STANDARD PLUG
JAN-18-EN-1128 PYROTEK INC.
Page 21 pyrotek.com
 T SERIES
T1 SERIES – THERMOCOUPLE PROTECTION TUBES (O’-SIALON,
SIALON, PINNACLE, RFM AND SIC)
Pyrotek offers a wide variety of thermocouple protection tubes for direct immersion into molten non-ferrous metals. Pyrotek
offers several styles in an effort to satisfy all customers’ combination of life expectancy and value. Special sizes and
construction methods are available upon request.

O’-SIALON TC TUBE ONLY SIALON B100 CERAMIC OR SIN TC TUBE ONLY

14 mm

11 mm

O’-SIALON TC TUBE WITH FITTING SIN TUBE WITH FITTING

O’-SIALON TC PROTECTION TUBE SIN TC PROTECTION TUBE

Tube Only Tube Outside Diameter x Inside Tube with Fitting Tube Only Tube Outside Diameter x Inside Tube with Fitting
Part Number Diameter x Length – mm (in) Part Number Part Number Diameter x Length – mm (in) Part Number
001528 28 x 16 x 300 (1.1 x 0.6 x 11.8) 011397 005897 28 x 16 x 400 (1.1 x 0.6 x 15.8) N/A
006608 28 x 16 x 400 (1.1 x 0.6 x 15.8) 007370 005898 28 x 16 x 500 (1.1 x 0.6 x 19.7) N/A
005886 28 x 16 x 500 (1.1 x 0.6 x 19.7) 007371 005899 28 x 16 x 600 (1.1 x 0.6 x 23.6) 010265
000795 28 x 16 x 600 (1.1 x 0.6 x 23.6) 007372 005900 28 x 16 x 700 (1.1 x 0.6 x 27.6) N/A
006607 28 x 16 x 700 (1.1 x 0.6 x 27.6) 001130 005901 28 x 16 x 800 (1.1 x 0.6 x 31.5) N/A
006606 28 x 16 x 800 (1.1 x 0.6 x 31.5) 019453 005902 28 x 16 x 900 (1.1 x 0.6 x 35.4) 010263
006724 28 x 16 x 900 (1.1 x 0.6 x 35.4) 001339 009079 28 x 16 x 1000 (1.1 x 0.6 x 39.3) 005062
006725 28 x 16 x 1000 (1.1 x 0.6 x 39.3) 007374
007122 28 x 16 x 1200 (1.1 x 0.6 x 47.2) 007375 SIALON B100 TC PROTECTION TUBE
Tube Only Tube Outside Diameter x Inside Diameter
Part Number x Length – mm (in)
P009-FDS020 28 x 16 x 200 (1.1 x 0.6 x 7.9)
P009-FDS021 28 x 16 x 300 (1.1 x 0.6 x 11.8)
P009-FDS022 28 x 16 x 400 (1.1 x 0.6 x 15.8)
P009-FDS023 28 x 16 x 460 (1.1 x 0.6 x 18.1)
P009-FDS024 28 x 16 x 500 (1.1 x 0.6 x 19.7)
PINNACLE PROTECTION TUBE P009-FDS025 28 x 16 x 600 (1.1 x 0.6 x 23.6)
19 MM (3/4” NPT) PIPE FITTING
Part Number Outside Diameter – Tube Length – P009-FDS025-1 28 x 16 x 650 (1.1 x 0.6 x 25.6)
mm (in) mm (in) P009-FDS026 28 x 16 x 700 (1.1 x 0.6 x 27.6)
011250 51 (2) 152 (6) P009-FDS026-1 28 x 16 x 750 (1.1 x 0.6 x 29.5)
001431 51 (2) 305 (12) P009-FDS027 28 x 16 x 800 (1.1 x 0.6 x 31.5)
001450 51 (2) 457 (18) P009-FDS028 28 x 16 x 850 (1.1 x 0.6 x 33.5)
001415 51 (2) 610 (24) P009-FDS029 28 x 16 x 900 (1.1 x 0.6 x 35.4)
001517 51 (2) 762 (30) P009-FDS030 28 x 16 x 1000 (1.1 x 0.6 x 39.3)
001414 51 (2) 914 (36)
003352 51 (2) 1067 (42)

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 22
 T1 SERIES

RFM PROTECTION TUBE 19 MM (3/4” NPT) PIPE FITTING CARBON BONDED SIC-GRAPHITE TUBE 19 MM (3/4” NPT)
PIPE FITTING
Part Number Outside Diameter – mm (in) Tube Length – mm (in)
Part Number Outside Diameter – mm (in) Tube Length – mm (in)
006757 38 (1 1/2) 305 (12)
006925 44 (1 3/4) 305 (12)
006756 38 (1 1/2) 457 (18)
005920 44 (1 3/4) 457 (18)
001578 38 (1 1/2) 610 (24)
000292 44 (1 3/4) 610 (24)
006754 38 (1 1/2) 762 (30)
000262 44 (1 3/4) 762 (30)
006753 38 (1 1/2) 914 (36)
000926 44 (1 3/4) 914 (36)
009702 38 (1 1/2) 1067 (42)
009701 38 (1 1/2) 1219 (48)

JAN-18-EN-1128 PYROTEK INC.

Page 23 pyrotek.com
T2 SERIES – THERMOCOUPLE PROTECTION TUBES (PLAIN
AND RED ENAMEL CAST IRON)
Pyrotek’s cast iron protection tubes have been designed to provide long life when they are subjected to the demanding process
of melting non-ferrous alloys. Pyrotek offers both plain and enameled tubes in multiple sizes that are available globally.

18 mm 3/4” NPT
Thread

12 mm
40 mm

CAST IRON THERMOCOUPLE PROTECTION TUBE CAST IRON THERMOCOUPLE PROTECTION TUBE
(PLAIN TUBE) – MM (IN) (RED ENAMELED TUBE) – MM (IN)
Part Number Tube Length Part Number Tube Length
P009-P012NPT-012X40 Plain Cast Iron Protection Tube, 305 (12) P009-R012NPT-012X40 Red Cast Iron Protection Tube, 305 (12)
P009-P018NPT-012X40 Plain Cast Iron Protection Tube, 457 (18) P009-R018NPT-012X40 Red Cast Iron Protection Tube, 457 (18)
P009-P024NPT-012X40 Plain Cast Iron Protection Tube, 610 (24) P009-R024NPT-012X40 Red Cast Iron Protection Tube, 610 (24)
P009-P030NPT-012X40 Plain Cast Iron Protection Tube, 762 (30) P009-R030NPT-012X40 Red Cast Iron Protection Tube, 762 (30)
P009-P036NPT-012X40 Plain Cast Iron Protection Tube, 914 (36) P009-R036NPT-012X40 Red Cast Iron Protection Tube, 914 (36)
P009-P042NPT-012X40 Plain Cast Iron Protection Tube, 1067 (42) P009-R042NPT-012X40 Red Cast Iron Protection Tube, 1067 (42)
P009-P048NPT-012X40 Plain Cast Iron Protection Tube, 1219 (48) P009-R048NPT-012X40 Red Cast Iron Protection Tube, 1219 (48)
P009-P054NPT-012X40 Plain Cast Iron Protection Tube, 1372 (54) P009-R054NPT-012X40 Red Cast Iron Protection Tube, 1372 (54)
P009-P060NPT-012X40 Plain Cast Iron Protection Tube, 1524 (60) P009-R060NPT-012X40 Red Cast Iron Protection Tube, 1524 (60)
P009-P066NPT-012X40 Plain Cast Iron Protection Tube, 1676 (66) P009-R066NPT-012X40 Red Cast Iron Protection Tube, 1676 (66)
P009-P072NPT-012X40 Plain Cast Iron Protection Tube, 1829 (72) P009-R072NPT-012X40 Red Cast Iron Protection Tube, 1829 (72)
P009-P096NPT-012X40 Plain Cast Iron Protection Tube, 2438 (96) P009-R088NPT-012X40 Red Cast Iron Protection Tube, 2235 (88)
P009-P108NPT-012X40 Plain Cast Iron Protection Tube, 2743 (108) P009-R096NPT-012X40 Red Cast Iron Protection Tube, 2438 (96)

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 24
 M SERIES
M1 SERIES – MINERAL INSULATED THERMOCOUPLE
ELEMENTS
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures up to
1260°C (2300°F). Special construction styles and materials are available upon request.

1 2 2.1 3 4 5 6

M1 — S —

1. MODEL UNIT SYSTEM 6. ELEMENT LENGTH – “L” DIMENSION

E Imperial XX Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½
Specify the required unit system and use it
inches
to determine all the item’s measurements.
5. THERMOCOUPLE JUNCTION
2. THERMOCOUPLE CALIBRATION U Ungrounded
E Type E G Grounded
J Type J E Exposed
K Type K
N Type N 4. SHEATH MATERIAL
R Type R 34 304SS
S Type S 30 310SS
JJ Dual Type J 32 321SS
KK Dual Type K 36 316SS
NN Dualy Type N 50 Pyrocable
60 INCONEL 601
2.1. T/C CALIBRATION TOLERANCE MON MONEL
S Special Limits of Error

3. SHEATH DIAMETER
D 1/16 in
E 1/8 in
F 3/16 in
I 1/4 in
L 3/8 in
P 1.5 mm
Q 2 mm
R 3 mm
S 4.5 mm
T 6 mm
V 8 mm
Y 10.8 mm
W 12.7 mm

JAN-18-EN-1128 PYROTEK INC.

Page 25 pyrotek.com
M2 SERIES – MINERAL INSULATED ELEMENTS PLUG AND
JACK STYLE
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures of up
to 1260°C (2300°F). Plug and jack assemblies utilize either miniature or standard size plugs and jacks to ensure the sensors
are interchangeable. These probes are available in several diameters, a variety of sheath materials and customer specific
lengths. Special construction styles and materials are available upon request.

1 2 2.1 3 4 5 6 7 7.1 8 8.1

M2 — S — — —

1. MODEL UNIT SYSTEM 8.1. SHEATH TERMINATION

OPTIONS
E Imperial
M Metric H High Temperature
Connectors
Specify the required unit system and use it (427°C/800°F)
to determine all the item’s measurements.
L Compression Tube
Adaptor Holding Plug to
2. THERMOCOUPLE CALIBRATION Sheath
E Type E Only add the option designation letter if those
J Type J options are needed.
K Type K
N Type N
8. SHEATH TERMINATION
S Type S
R Type R 21 *Standard Male Plug
JJ Dual Type J 22 *Standard Female Jack
KK Dual Type K 23 *Standard Plug/Jack
24 *Standard Solid Pin Plug
2.1. T/C CALIBRATION TOLERANCE 11 Miniature Male Plug
12 Miniature Female Jack
S Special Limits of Error 13 Miniature Plug/Jack

3. SHEATH DIAMETER
*The temperature rating for all standard plugs
and jacks is 218°C (425°F).
D 1/16 in
E 1/8 in 7.1. BEND MOUNTING OPTIONS
F 3/16 in
I 1/4 in 9XX 90° Bend (XX = Hot Leg Length in Inches)
L 3/8 in 4XX 45° Bend (XX = Hot Leg Length in Inches)
When ordering an angled assembly, the sum of the Hot Leg and
P 1.5 mm Cold Leg will equal the total L dimension. Leave the box blank if
Q 2 mm no options are needed.
R 3 mm
S 4.5 mm
T 7. SHEATH MOUNTING OPTIONS – MM (IN NPT)
6 mm
V 8 mm 00 No Mounting Options
Y 10.8 mm BA Brass Compression Fitting 3 (1/8)
W 12.7 mm SA Stainless Compression Fitting 3 (1/8)
BB Brass Compression Fitting 6 (1/4)
4. SHEATH MATERIAL SB Stainless Compression Fitting 6 (1/4)
BC Brass Compression Fitting 13 (1/2)
34 304 SS SC Stainless Compression Fitting 13 (1/2)
30 310 SS RA Readjustable SS Compression Fitting 3 (1/8)
32 321 SS FC Fixed SS Bushing 13 (1/2) (Insert L Dimension)
36 316 SS HY Compression Bayonet Fitting (3 mm, 1/8 in Sheath Only)
50 Pyrocable ZZ Special Option-Consult Factory
60 INCONEL 601
MON MONEL
6. ELEMENT LENGTH – “L” DIMENSION

5. THERMOCOUPLE JUNCTION XX Enter the length in millimetres or inches.

For fractional lengths, enter 2(1/2) for 2-½
U Ungrounded inches
G Grounded
E Exposed
NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND
WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 26
 M3 SERIES – MINERAL INSULATED ELEMENTS HEAD AND
BLOCK
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures
up to 1260°C (2300°F). Assemblies are available with many attachment fittings, including cast iron or cast aluminium screw
cover heads for ease of installation. Special construction styles and materials are available upon request.

1 2 2.1 3 4 5 6 7 7.1 8 8.1

M3 — S — — —

1. MODEL UNIT SYSTEM 8.1. SCREW COVER HEAD STYLE

E Imperial 00 No Head; Threaded
M Metric Fitting Only; 2 inch
Specify the required unit system and use it
Stripped Leads Beyond
to determine all the item’s measurements. Fitting Standard
41 Cast Aluminium Screw
Cover Head
2. THERMOCOUPLE CALIBRATION
42 Cast Iron Screw Cover
K Type K Head
J Type J
N Type N 8. HEAD TERMINATION OPTIONS – MM (IN NPT)
KK Dual Type K
JJ Dual Type J 75C 13 x 13 (1/2 x 1/2) SS Hex Nipple
65C 13 x 13 (1/2 x 1/2) Steel Hex Nipple
55B 6 (1/4) Brass Compression Fitting
2.1. T/C CALIBRATION TOLERANCE
85C 13 (1/2) Steel Hex Plug
S Special Limits of Error 85D 19 (3/4) Steel Hex Plug

3. SHEATH DIAMETER 7.1. SHEATH BEND OPTIONS

D 1/16 in 9XX 90° Bend (XX = Hot Leg Length in Inches)

E 1/8 in 4XX 45° Bend (XX = Hot Leg Length in Inches)
F 3/16 in When ordering an angled assembly, the sum of the Hot Leg and the
I 1/4 in Cold Leg will equal the total “L” dimension. Leave the box blank if no
L 3/8 in options are needed.
P 1.5 mm
Q 2 mm 7. SHEATH MOUNTING OPTIONS – MM (IN NPT)
R 3 mm 00 No Mounting Options
S 4.5 mm BA Brass Compression Fitting 3 (1/8)
T 6 mm SA Stainless Compression Fitting 3 (1/8)
V 8 mm BB Brass Compression Fitting 6 (1/4)
Y 10.8 mm SB Stainless Compression Fitting 6 (1/4)
W 12.7 mm BC Brass Compression Fitting 13 (1/2)
SC Stainless Compression Fitting 13 (1/2)
4. SHEATH MATERIAL FC Fixed SS Bushing 13 (1/2) (Insert L Dimension)
34 304SS HY Compression Bayonet Fitting (3 mm, 1/8 in Sheath Only)
36 316SS ZZ Special Option-Consult Factory
30 310SS
32 321SS 6. ELEMENT LENGTH – “L” DIMENSION
50 Pyrocable XX Enter the length in millimetres or inches.
60 INCONEL 601 For fractional lengths, enter 2(1/2) for 2-½
inches
5. THERMOCOUPLE JUNCTION
U Ungrounded
G Grounded
E Exposed

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 27 pyrotek.com
M3B SERIES – THERMOCOUPLE SENSOR ASSEMBLY WITH
HEAD AND NIPPLE
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures
up to 1260°C (2300°F). Assemblies are available with many attachment fittings, including cast iron or cast aluminium screw
cover heads for ease of installation. Special construction styles and materials are available upon request.
Head with Terminal Block
Nipple

1 2 3 4 5 6 7 8 9 10

M3B — S — — —

1. MODEL UNIT SYSTEM 10. FITTINGS – NIPPLE

E Imperial N Nipple: NPT Connection Type
M Metric B Nipple: BSP Connection Type
Specify the required unit system and use it
to determine all the item’s measurements. 9. HEAD TERMINATION OPTIONS
W Cast Aluminium Weatherproof
2. THERMOCOUPLE CALIBRATION E Cast Aluminium Explosion proof
E Type E N Class 1, Div 1, Group B, C
J Type J E1 Cast Aluminium Flame proof
K Type K E2 CENELEC: Eexd, IIC, ATEX, 2G
N Type N H High Lid
R Type R 42 Cast Iron Head
S Type S
8. ELEMENT LENGTH – “L” DIMENSION
3. T/C CALIBRATION TOLERANCE
Enter the length in millimetres or inches.
S Special Limits of Error For fractional lengths, enter 2(1/2) for 2-½
inches
4. JUNCTION
7. NIPPLE THREAD SIZE – MM (IN)
G Grounded
U Ungrounded 1 15 (1/2)
E Exposed 2 20 (3/4)

5. SHEATH MATERIAL
36 316 SS
32 321 SS
30 310 SS
60 Inconel 601
MON Monel

6. SHEATH DIAMETER
D 1/16 in
E 1/8 in
F 3/16 in
I 1/4 in
L 3/8 in
P 1.5 mm
Q 2 mm
R 3 mm
S 4.5 mm
T 6 mm
V 8 mm
Y 10.8 mm
W 12.7 mm

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 28
 M3C SERIES – THERMOCOUPLE SENSOR ASSEMBLY WITH
HEAD AND NIPPLE-UNION-NIPPLE
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures
up to 1260°C (2300°F). Assemblies are available with many attachment fittings, including cast iron or cast aluminium screw
cover heads for ease of installation. Special construction styles and materials are available upon request.

Head with Terminal Block

Nipple-Union-Nipple

1 2 3 4 5 6 7 8 9 10
M3C — S — — — —

1. MODEL UNIT SYSTEM 10. FITTINGS – NIPPLE

E Imperial N Nipple: NPT Connection Type
M Metric B Nipple: BSP Connection Type
Specify the required unit system and use it
to determine all the item’s measurements. 9. HEAD TERMINATION OPTIONS
W Cast Aluminium Weatherproof
2. THERMOCOUPLE CALIBRATION E Cast Aluminium Explosion proof
E Type E N Class 1, Div 1, Group B, C
J Type J E1 Cast Aluminium Flame proof
K Type K E2 CENELEC: Eexd, IIC, ATEX, 2G
N Type N H High Lid
R Type R 42 Cast Iron Head
S Type S
8. SENSOR LENGTH – “L” DIMENSION
3. T/C CALIBRATION TOLERANCE Enter the length in millimetres or inches.
S Special Limits of Error For fractional lengths, enter 2(1/2) for 2-½
inches
4. JUNCTION 7. NIPPLE THREAD SIZE – MM (IN)
G Grounded 1 15 (1/2)
U Ungrounded 2 20 (3/4)
E Exposed
6. SHEATH DIAMETER
5. SHEATH MATERIAL
D 1/16 in
36 316 SS E 1/8 in
32 321 SS F 3/16 in
30 310 SS I 1/4 in
60 Inconel 601 L 3/8 in
MON Monel
P 1.5 mm
Q 2 mm
R 3 mm
S 4.5 mm
T 6 mm
V 8 mm
Y 10.8 mm
W 12.7 mm

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 29 pyrotek.com
M3D SERIES – THERMOCOUPLE SENSOR ASSEMBLY WITH
HEAD AND BUSHING
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures
up to 1260°C (2300°F). Assemblies are available with many attachment fittings, including cast iron or cast aluminium screw
cover heads for ease of installation. Special construction styles and materials are available upon request.

Head with Terminal Block

Bushing

1 2 3 4 5 6 7 8 9
M3D — S — — —

1. MODEL UNIT SYSTEM 9. FITTINGS – NIPPLE

E Imperial N Nipple: NPT Connection Type
M Metric B Nipple: BSP Connection Type
Specify the required unit system and use it
to determine all the item’s measurements. 8. HEAD TERMINATION OPTIONS
W Cast Aluminium Weatherproof
2. THERMOCOUPLE CALIBRATION E Cast Aluminium Explosion proof
E Type E N Class 1, Div 1, Group B, C
J Type J E1 Cast Aluminium Flame proof
K Type K E2 CENELEC: Eexd, IIC, ATEX, 2G
N Type N H High Lid
R Type R 42 Cast Iron Head
S Type S
7. SENSOR LENGTH – “L” DIMENSION
3. T/C CALIBRATION TOLERANCE Enter the length in millimetres or inches.
S Special Limits of Error For fractional lengths, enter 2(1/2) for 2-½ inches

6. SHEATH DIAMETER
4. JUNCTION
D 1/16 in
G Grounded E 1/8 in
U Ungrounded F 3/16 in
E Exposed I 1/4 in
L 3/8 in
5. SHEATH MATERIAL
P 1.5 mm
36 316 SS Q 2 mm
32 321 SS R 3 mm
30 310 SS S 4.5 mm
60 Inconel 601 T 6 mm
MON Monel V 8 mm
Y 10.8 mm
W 12.7 mm

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 30
 M4 SERIES – MINERAL INSULATED THERMOCOUPLES WITH
LEAD WIRE
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures of up to
1260°C (2300°F). Special construction styles and materials are available upon request.

1 2 2.1 3 4 5 6 7 7.1 8 9 9.1 10 10.1

M4 — S — — — —

1. MODEL UNIT SYSTEM 10.1. TERMINATION OPTIONS

E Imperial C Cable Clamp for Plug/Jack
M Metric H High Temp Plug/Jack
Specify the required unit system and use it
(Standard Size Only; 427°C/800°F)
to determine all the item’s measurements. The temperature rating for all standard plugs and jacks is 218°C
(425°F). Leave box blank if no options needed.
2. THERMOCOUPLE CALIBRATION
10. LEAD WIRE TERMINATION STYLE
K Type K
J Type J 31 51 mm (2 in) Split Leads
N Type N 32 51 mm (2 in) Leads with Spade Lugs
KK Dual Type K 21 Standard Plug
JJ Dual Type J 22 Standard Jack
23 Standard Plug and Jack
2.1. T/C CALIBRATION TOLERANCE 11 Miniature Plug
S Special Limits of Error 12 Miniature Female Jack
13 Miniature Plug and Jack
BL Boot Lace Connectors
3. SHEATH DIAMETER
The temperature rating for all standard plugs and jacks is 218°C (425°F).
D 1/16 in
E 1/8 in 9.1. LEAD WIRE LENGTH – “X” DIMENSION
F 3/16 in
I 1/4 in XXX Insert the length in whole inches. Example: 060 for 60 inches
L 3/8 in
P 1.5 mm 9. LEAD WIRE TYPES (SOME CONFIGURATIONS ARE NOT AVAILABLE)

Q 2 mm E Hi-Temp Fibreglass Solid 704°C (1300°F)

R 3 mm F Hi-Temp Fibreglass Solid w/ SSOB 704°C (1300°F)
S 4.5 mm G Hi-Temp Fibreglass Solid w/ Flex Armor 704°C (1300°F)
T 6 mm H Hi-Temp Fibreglass Stranded w/ SSOB 704°C (1300°F)
V 8 mm T FEP Teflon Solid 260°C (500°F) (1/8 inch Probes Only)
Y 10.8 mm
W 12.7 mm Other types available upon request.

4. SHEATH MATERIAL 8. WIRE TRANSITION OPTIONS

34 304 SS 7 HT Transition with Spring 538°C (1000°F) (Standard)

36 316 SS 6 Transition with Spring 204°C (400°F)
30 310 SS 8 Transition with Heat Shrink 104°C (220°F)
32 321 SS
50 Pyrocable 7.1. SHEATH BEND OPTIONS
60 INCONEL 601
9XX 90° Bend (XX = Hot Leg Length in Inches)
4XX 45° Bend (XX = Hot Leg Length in Inches)
5. THERMOCOUPLE JUNCTION
When ordering an angled assembly, the sum of the Hot Leg and Cold Leg will equal the total
U Ungrounded “L” dimension. Leave the box blank if no options are needed.
G Grounded
E Exposed 7. SHEATH MOUNTING OPTIONS – MM (IN NPT)

6. ELEMENT LENGTH – “L” DIMENSION 00 No Mounting Options

BA Brass Compression Fitting 3 (1/8)
XX Enter the length in millimetres or inches. SA Stainless Compression Fitting 3 (1/8)
For fractional lengths, enter 2(1/2) for 2-½ inches BB Brass Compression Fitting 6 (1/4)
SB Stainless Compression Fitting 6 (1/4)
BC Brass Compression Fitting 13 (1/2)
SC Stainless Compression Fitting 13 (1/2)
RA Readjustable SS Compression Fitting 3 (1/8)
FC Fixed SS Bushing 13 (1/2) (Insert L Dimension)
NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND
HY Compression Bayonet Fitting (3 mm, 1/8 in Sheath Only)
ZZ Special Option-Consult Factory
WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 31 pyrotek.com
M5 SERIES – MINIATURE SENSORS FOR BEARING
TEMPERATURE
Pyrotek’s mineral insulated (MgO) elements are fast responding, durable and capable of handling temperatures
up to 1482°C (2700°F).

Measuring Junction
1 2 3 4 5 6 7

M5 — — — —

1. MODEL UNIT SYSTEM 7. OVERBRAID

E Imperial S Stainless Steel Overbraid
M Metric X No Overbraid
Specify the required unit system and use it
to determine all the item’s measurements. 6. SENSOR LENGTH – “L” DIMENSION
Enter the length in millimetres or inches.
2. THERMOCOUPLE CALIBRATION For fractional lengths, enter 2(1/2) for 2-½ inches
E Type E
J Type J 5. SHEATH MATERIAL
K Type K 36 316 SS
N Type N 32 321 SS
S Type S 30 310 SS
R Type R 32 321 SS
60 Inconel
3. T/C CALIBRATION TOLERANCE MON Monel
1 Standard Limits of Error
2 Special Limits of Error

4. JUNCTION
G Grounded
U Ungrounded
E Exposed

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 32
 P SERIES
P1 SERIES – GENERAL APPLICATION DIE THERMOCOUPLES
Pyrotek’s fibreglass insulated elements with tubular sheaths are capable of handling temperatures up to 870°C (1600°F).
Compression fitting or bayonet adapter connections are typical for direct and quick attachment to your tooling and dies. Special
construction styles and materials are available upon request.

41.2 mm
(1.625 in)

1 2 3 4 5 6 7 8 9 10 10.1
P1 — G — — — —

1. MODEL UNIT SYSTEM 10.1. TERMINATION OPTIONS

E Imperial C Cable Clamp
M Metric H High Temp Plug/Jack
Specify the required unit system and use it
(Standard Size Only; 427°C/800°F)
to determine all the item’s measurements. Only add the option designation letter if those options are
desired.
2. THERMOCOUPLE CALIBRATION
E Type E 10. LEAD WIRE TERMINATION STYLE
J Type J 31 51 mm (2 in) Split Leads
K Type K 32 51 mm (2 in) Leads with Spade Lugs
N Type N 21 *Standard Plug
R Type R 22 *Standard Jack
S Type S 23 *Standard Plug/Jack
JJ Dual Type J 11 Miniature Plug
KK Dual Type K 12 Miniature Female Jack
13 Miniature Plug/Jack
3. TUBING DIAMETER 304SS – MM (IN)
*The temperature rating for all standard plugs and jacks is
E 3 (1/8) 425°F (218°C).
F 5 (3/16)
9. LEAD WIRE LENGTH – “X” DIMENSION
4. THERMOCOUPLE JUNCTION XXX Enter the length in whole millimetres or inches.
G Grounded Example: 060 for 60 inches
(Ungrounded Available by Request Only)
8. LEAD WIRE TYPES (SOME CONFIGURATIONS MAY NOT BE AVAILABLE)
5. BEND ANGLE E Hi-Temp Fibreglass Solid 704°C (1300°F)
S Straight F Hi-Temp Fibreglass Solid w/ SSOB 704°C (1300°F)
F 45° Bend G Hi-Temp Fibreglass Solid w/ Flex Armor 704°C (1300°F)
N 90° Bend H Hi-Temp Fibreglass Stranded w/ SSOB 704°C (1300°F)
T FEP Teflon Solid 260°C (500°F) (1/8 in Probes Only)
6. ELEMENT LENGTH – “L” DIMENSION
XX Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches

7. SHEATH MOUNTING OPTIONS – MM (IN NPT)

00 No Mounting Options
BA Brass Compression Fitting 3 (1/8)
SA Stainless Compression Fitting 3 (1/8)
BB Brass Compression Fitting 6 (1/4)
SB Stainless Compression Fitting 6 (1/4)
HY Compression Bayonet Fitting (3 mm, 1/8 in Sheath Only)
FB Fixed Bayonet Fitting

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 33 pyrotek.com
P2 SERIES – SPRING ADJUSTABLE BAYONET STYLE
Pyrotek’s spring adjustable style allows for a varying depth adjustment of up to 178 millimetres (7 inches) maximum. Utilized
with a bayonet adapter, this assembly allows for quick installation. The assembly is capable of handling temperature limits up to
870°C (1600°F). Special construction styles and materials are available upon request.

1 2 3 4 5 6 7 7.1
P2 — G — —

1. MODEL UNIT SYSTEM 7.1. TERMINATION OPTIONS

E Imperial C Cable Clamp for Plug/Jack
M Metric H High Temp Plug/Jack
Specify the required unit system and use it
(Standard Size Only; 427°C/800°F)
to determine all the item’s measurements. Leave box blank if no options needed.

2. THERMOCOUPLE CALIBRATION 7. LEAD WIRE TERMINATION STYLE

J Type J 31 51 mm (2 in) Split Leads
K Type K 32 51 mm (2 in) Leads with Spade Lugs
JJ Dual Type J 21 *Standard Plug
KK Dual Type K 22 *Standard Jack
23 *Standard Plug/Jack
3. SHEATH DIAMETER – MM (IN) 11 Miniature Plug
E 3 (1/8) 12 Miniature Female Jack
(Not available in dual elements) 13 Miniature Plug/Jack
F 5 (3/16) (Standard) *The temperature rating for all standard plugs and jacks is
218°C (425°F).
4. THERMOCOUPLE JUNCTION
G Grounded 6. LEAD WIRE LENGTH – “X” DIMENSION
(Ungrounded Available by Request Only) XXX Enter the length in whole millimetres or inches.
Example: 060 for 60 inches
5. LEAD WIRE TYPES
P Fibreglass Solid with SSOB 870°C (1600°F)
S Fibreglass Stranded with SSOB 870°C (1600°F)
Only available in 5 mm (3/16 in) OD tube size.
E Hi-Temp Fibreglass Solid 704°C (1300°F)
N Fibreglass Stranded 704°C (1300°F)

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 34
 P3 SERIES – ARMOR ADJUSTABLE BAYONET STYLE
Pyrotek’s armour adjustable style allows the entire length of the flexible armour jacketing on the wire to be immersed. Utilized
with a bayonet adapter, this assembly allows for quick installation. The assembly is capable of handling temperature limits of up
to 870°C (1600°F). Special construction styles and materials are available upon request.

1 2 3 4 5 6 7 7.1
P3 — G — —

1. MODEL UNIT SYSTEM 7.1. TERMINATION OPTIONS

E Imperial C Cable Clamp for Plug/Jack
M Metric H High Temp Plug/Jack
Specify the required unit system and use it
(Standard Size Only; 427°C/800°F)
to determine all the item’s measurements. Leave box blank if no options needed.

2. THERMOCOUPLE CALIBRATION 7. LEAD WIRE TERMINATION STYLE

J Type J 31 51 mm (2 in) Split Leads
K Type K 32 51 mm (2 in) Leads with Spade Lugs
JJ Dual Type J 21 *Standard Plug
KK Dual Type K 22 *Standard Jack
23 *Standard Plug/Jack
3. SHEATH DIAMETER – MM (IN) 11 Miniature Plug
E 3 (1/8) 12 Miniature Female Jack
(Not available in dual elements) 13 Miniature Plug/Jack
F 5 (3/16) (Standard) *The temperature rating for all standard plugs and jacks is
218°C (425°F).
4. THERMOCOUPLE JUNCTION
6. LEAD WIRE LENGTH IN INCHES – “X” DIMENSION
G Grounded
(Ungrounded Available by Request Only) XXX Enter the length in whole millimetres or inches.
Example: 060 for 60 inches
5. LEAD WIRE TYPES
G Fibreglass Solid with Armour 870°C (1600°F)
R Fibreglass Stranded with Armour 482°C (900°F)
Only available in 5 mm (3/16 in) OD tube size.
E Hi-Temp Fibreglass Solid 704°C (1300°F)
N Fibreglass Stranded 704°C (1300°F)

NOTE: THERMOCOUPLE EXTENSIONS, ACCESSORIES AND

WIRES ARE AVAILABLE ON THE P4 AND A1 SERIES PAGES.

JAN-18-EN-1128 PYROTEK INC.

Page 35 pyrotek.com
P4 SERIES – THERMOCOUPLE EXTENSIONS
Pyrotek’s thermocouple extensions provide a suitable connection from the thermocouple to the instrumentation panel. Often,
extensions will be utilized to extend the length of the thermocouple to reduce waste and the replacement of sensor lead wire.
Thermocouple wire and terminations in a wide variety of lengths are available, along with special construction styles.

1 2 3 3.1 4 5 6 6.1
P4 — — —

1. MODEL UNIT SYSTEM 6.1. TERMINATION OPTIONS

E Imperial C Cable Clamp for Plug/Jack
M Metric H High Temp Plug/Jack
Specify the required unit system and use it
(Standard Size Only; 427°C/800°F)
to determine all the item’s measurements. Leave the box blank if no options are needed.

2. THERMOCOUPLE CALIBRATION 6. LEAD WIRE TERMINATION STYLE

K Type K 31 51 mm (2 in) Split Leads
J Type J 32 51 mm (2 in) Leads with Lugs
N Dual Type N 21 *Standard Plug
KK Dual Type K 22 *Standard Jack
JJ Dual Type J 23 *Standard Plug/Jack
11 Miniature Plug
3. LEAD WIRE TERMINATION STYLE 12 Miniature Female Jack
31 51 mm (2 in) Split Leads 13 Miniature Plug/Jack
32 51 mm (2 in) Leads with Spade Lugs *The temperature rating for all standard plugs and jacks is
21 *Standard Plug 218°C (425°F).
22 *Standard Jack
23 *Standard Plug/Jack 5. LEAD WIRE LENGTH – “X” DIMENSION
11 Miniature Plug
XXX Enter the length in whole millimetres or inches.
12 Miniature Female Jack
13 Miniature Plug/Jack Example: 060 for 60 inches
*The temperature rating for all standard plugs and jacks is
218°C (425°F). 4. LEAD WIRE TYPES (SOME CONFIGURATIONS MAY NOT BE AVAILABLE)

E Hi-Temp Fibreglass Solid 704°C (1300°F)

3.1. TERMINATION OPTIONS F Hi-Temp Fibreglass Solid w/ SSOB 704°C (1300°F)
C Cable Clamp for Plug/Jack G Hi-Temp Fibreglass Solid w/ Flex Armor 704°C (1300°F)
H High Temp Plug/Jack H Hi-Temp Fibreglass Stranded w/ SSOB 704°C (1300°F)
(Standard Size Only; 427°C/800°F) T FEP Teflon Solid 260°C (500°F) (3 mm, 1/8 in Probes Only)
C PVC/PVC Coil Cord Extension (Must use whole (“060”)
Leave the box blank if no options are needed. millimetres or inches as the extended X dimension in Box 5;
other sizes available upon request)

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 36
 RT SERIES
RT 901 SERIES – RESISTANCE TEMPERATURE DETECTORS
(RTDS) SENSOR WITH NIPPLE-UNION-NIPPLE
Pyrotek’s RT 901 Series are ceramic encapsulated resistance temperature detectors that offer Class A and Class B accurate
temperature measurements from -200 to 800°C (-328 to 1472°F) through the use of wire wound and thin sensors. The sensors
are calibrated to the following standards: ASTM E585/E585-M 01a, BS EN 60584-1, IEC 584, IEC 1515, ANSI/MC 96.1

Nipple-Union-Nipple

Metal Sheath
1 2 3 4 5 6 7 8

RT 901 — — — —

1. MODEL UNIT SYSTEM 8. FITTINGS

E Imperial B BSP (M) Comp. Fitting
M Metric N NPT (M) Comp. Fitting
Specify the required unit system and use it
to determine all the item’s measurements. 7. SENSOR LENGTH – “L” DIMENSION
XX Enter the length in whole millimetres or inches.
2. ELEMENT TYPE Example: 060 for 60 inches
PO PT 100
POO PT 1000 6. SHEATH DIAMETER
C Cu 10 D 1/16 in
E 1/8 in
3. SENSORS F 3/16 in
S Simplex I 1/4 in
D Duplex L 3/8 in
Q 3 mm
4. WIRE CONFIGURATION R 6 mm
B 2 Wire S 8 mm
T 3 Wire T 12.7 mm
P 4 Wire
5. SHEATH MATERIAL
36 316 SS
30 310 SS
32 321 SS
60 Inconel 601
MON Monel

JAN-18-EN-1128 PYROTEK INC.

Page 37 pyrotek.com
RT 902 SERIES – RESISTANCE TEMPERATURE DETECTORS
(RTDS) SENSOR WITH EXTENSION CABLE
Pyrotek’s RT 902 Series are ceramic encapsulated resistance temperature detectors that offer Class A and Class B accurate
temperature measurements from -200 to 800°C (-328 to 1472°F) through the use of wire wound and thin sensors. The sensors
are calibrated to the following standards: ASTM E585/E585-M 01a, BS EN 60584-1, IEC 584, IEC 1515, ANSI/MC 96.1

Pot Seal (Optional)

Cable
L

X
Metal Sheath

1 2 3 4 5 6 7 8 9 10

RT 902 — — — — — —

1. MODEL UNIT SYSTEM 10. POT SEAL SLEEVE

E Imperial Y Yes
M Metric N No
Specify the required unit system and use it
to determine all the item’s measurements. 9. CABLE LENGTH – “X” DIMENSION
Enter the length in millimetres or inches.
2. ELEMENT TYPE For fractional lengths, enter 2(1/2) for 2-½ inches
P1 PT 100
P2 PT 1000 8. CABLE
C Cu 10 T Teflon/Teflon
F Fibreglass/Fibreglass
3. SENSORS
S Simplex 7. SENSOR LENGTH – “L” DIMENSION
D Duplex Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
4. WIRE CONFIGURATION
B 2 Wire 6. SHEATH DIAMETER
T 3 Wire D 1/16 in
P 4 Wire E 1/8 in
F 3/16 in
5. SHEATH MATERIAL I 1/4 in
36 316 SS L 3/8 in
30 310 SS Q 3 mm
32 321 SS R 6 mm
60 Inconel 601 S 8 mm
MON Monel T 12.7 mm

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 38
 RT 903 SERIES – RESISTANCE TEMPERATURE DETECTORS
(RTDS) REPLACEMENT SENSOR
Pyrotek’s RT 903 Series are ceramic encapsulated resistance temperature detectors that offer Class A and Class B accurate
temperature measurements from -200 to 800°C (-328 to 1472°F) through the use of wire wound and thin sensors. The sensors
are calibrated to the following standards: ASTM E585/E585-M 01a, BS EN 60584-1, IEC 584, IEC 1515, ANSI/MC 96.1

Terminal Block
1 2 3 4 5 6 7 8

RT 903 — — — —

1. MODEL UNIT SYSTEM 8. TERMINAL BLOCK

E Imperial L Spring-loaded
M Metric N Non-spring-loaded
Specify the required unit system and use it
to determine all the item’s measurements. 7. SENSOR LENGTH – “L” DIMENSION
Enter the length in millimetres or inches.
2. ELEMENT TYPE For fractional lengths, enter 2(1/2) for 2-½ inches
P1 PT 100
P2 PT 1000 6. SHEATH DIAMETER
C Cu 10 D 1/16 in
E 1/8 in
3. SENSORS F 3/16 in
S Simplex I 1/4 in
D Duplex L 3/8 in
Q 3 mm
4. WIRE CONFIGURATION R 6 mm
S 8 mm
B 2 Wire
T 12.7 mm
T 3 Wire
P 4 Wire
5. SHEATH MATERIAL
36 316 SS
30 310 SS
32 321 SS
60 Inconel 601
MON Monel

JAN-18-EN-1128 PYROTEK INC.

Page 39 pyrotek.com
RT 904 SERIES – RESISTANCE TEMPERATURE DETECTORS
(RTDS) SENSOR ASSEMBLY WITH HEAD AND NIPPLE-UNION-
NIPPLE
Pyrotek’s RT 904 Series are ceramic encapsulated resistance temperature detectors that offer Class A and Class B accurate
temperature measurements from -200 to 800°C (-328 to 1472°F) through the use of wire wound and thin sensors. The sensors
are calibrated to the following standards: ASTM E585/E585-M 01a, BS EN 60584-1, IEC 584, IEC 1515, ANSI/MC 96.1.

Nipple-Union-Nipple
Metal Sheath

Head with Terminal Block

1 2 3 4 5 6 7 8 8.1

RT 904 — — —

1. MODEL UNIT SYSTEM 8.1 FITTINGS

E Imperial N Nipple Union Nipple: NPT Connector
M Metric B Nipple Union Nipple: BSP Connector
Specify the required unit system and use it
to determine all the item’s measurements. 8. HEADS
W Cast Aluminium Weatherproof
2. ELEMENT TYPE E Cast Aluminium Explosion Proof
P1 PT 100 N Class 1, Div 1, Group B, C
P2 PT 1000 E1 Cast Aluminium Flame Proof
C Cu 10 E2 CENELEC: Eexd, IIC, ATEX, 2G
H High Lid
3. SENSORS
7. SENSOR LENGTH – “L” DIMENSION
S Simplex
D Duplex Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
4. WIRE CONFIGURATION
6. SHEATH DIAMETER
B 2 Wire
T 3 Wire D 1/16 in
P 4 Wire E 1/8 in
F 3/16 in
5. SHEATH MATERIAL I 1/4 in
L 3/8 in
36 316 SS
30 310 SS Q 3 mm
32 321 SS R 6 mm
60 Inconel 601 S 8 mm
MON Monel T 12.7 mm

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 40
 RT 905 SERIES – RESISTANCE TEMPERATURE DETECTORS
(RTDS) SENSOR ASSEMBLY WITH HEAD AND NIPPLE-UNION-
NIPPLE
Pyrotek’s RT 905 Series are ceramic encapsulated resistance temperature detectors that offer Class A and Class B accurate
temperature measurements from -200 to 800°C (-328 to 1472°F) through the use of wire wound and thin sensors. The sensors
are calibrated to the following standards: ASTM E585/E585-M 01a, BS EN 60584-1, IEC 584, IEC 1515, ANSI/MC 96.1.

L
Metal Sheath

Outer Protection Sheath

Head with Terminal Block
1 2 3 4 5 6 7 8 9 10

RT 905 — — — —

1. MODEL UNIT SYSTEM 10. OUTER PROTECTION SHEATH MATERIAL

E Imperial 36 316 SS
M Metric 32 312 SS
Specify the required unit system and use it to
30 310 SS
determine all the item’s measurements. 44 446 SS
60 Inconel 601
2. ELEMENT TYPE Specify the sheath length and diameter.
P1 PT 100 9. FITTINGS
P2 PT 1000
C Cu 10 N Nipple Union Nipple: NPT Conn.
B Nipple Union Nipple: BSP Conn.
3. SENSORS Specify the thread size for the fitting.
S Simplex
D Duplex 8. HEADS
W Cast Aluminium Weatherproof
4. WIRE CONFIGURATION E Cast Aluminium Explosion Proof
B 2 Wire N Class 1, Div 1, Group B, C
T 3 Wire E1 Cast Aluminium Flame Proof
P 4 Wire E2 CENELEC: Eexd, IIC, ATEX, 2G
H High Lid
5. SHEATH MATERIAL
7. SENSOR LENGTH - “L” DIMENSION
36 316 SS
30 310 SS Enter the length in millimetres or inches.
32 321 SS For fractional lengths, enter 2(1/2) for 2-½ inches
60 Inconel 601
MON Monel 6. SHEATH DIAMETER
D 1/16 in
E 1/8 in
F 3/16 in
I 1/4 in
L 3/8 in
Q 3 mm
R 6 mm
S 8 mm
T 12.7 mm

JAN-18-EN-1128 PYROTEK INC.

Page 41 pyrotek.com
TW SERIES
TW 701 SERIES – THERMOWELLS: FLANGED STRAIGHT
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

D1

1 2 3 4 5 6 7 8

TW 701 — — — — —

1. MODEL UNIT SYSTEM 8. OUTER SHEATH DIAMETER – “D1” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 7. INSERTION LENGTH – “X” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 6. STEM LENGTH – “L” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. FLANGE SIZE – MM (IN) PRESSURE RATING – KPA (LB/IN2)
32 25 (1) 1034 (150) 5. FLANGE MATERIAL
33 38 (1 1/2) 1034 (150) 36 316 SS
34 51 (2) 1034 (150) 32 321 SS
42 25 (1) 2068 (300) 30 310 SS
43 38 (1 1/2) 2068 (300) 46 446 SS
44 51 (2) 2068 (300) 60 Inconel
52 25 (1) 4137 (600) MON Monel
53 38 (1 1/2) 4137 (600) STE Stellite
54 51 (2) 4137 (600)
Other flange sizes and pressure ratings are available.

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 42
 TW 702 SERIES – THERMOWELLS: FLANGED TAPERED
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

X
D2

D1

1 2 3 4 5 6 7 8 8.1

TW 702 — — — — — — —

1. MODEL UNIT SYSTEM 8.1 COLLAR DIAMETER – “D2” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it to
determine all the item’s measurements. 8. TAPER DIAMETER – “D1” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 7. INSERTION LENGTH – “X” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. FLANGE SIZE – MM (IN) PRESSURE RATING – KPA (LB/IN ) 2

32 25 (1) 1034 (150) 6. STEM LENGTH – “L” DIMENSION

33 38 (1 1/2) 1034 (150) Enter the length in millimetres or inches.
34 51 (2) 1034 (150) For fractional lengths, enter 2(1/2) for 2-½ inches
42 25 (1) 2068 (300)
43 38 (1 1/2) 2068 (300)
5. FLANGE MATERIAL
44 51 (2) 2068 (300)
52 25 (1) 4137 (600) 36 316 SS
53 38 (1 1/2) 4137 (600) 30 310 SS
54 51 (2) 4137 (600) 32 321 SS
46 446 SS
Other flange sizes and pressure ratings are available. 60 Inconel
MON Monel
4. STEM MATERIAL STE Stellite
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

JAN-18-EN-1128 PYROTEK INC.

Page 43 pyrotek.com
TW 703 SERIES – THERMOWELLS: FLANGED STEPPED
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides
Wake frequency calculations in accordance with ASME PTC 19.3.

X
D2

D1

1 2 3 4 5 6 7 8 9

TW 703 — — — — — — —

1. MODEL UNIT SYSTEM 9. COLLAR DIAMETER – “D2” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it to
determine all the item’s measurements. 8. STEPPED DIAMETER – “D1” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 7. INSERTION LENGTH – “X” DIMENSION
C Other measurement (specify)
Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. FLANGE SIZE – MM (IN) PRESSURE RATING – KPA (LB/IN ) 2

32 25 (1) 1034 (150) 6. STEM LENGTH – “L” DIMENSION

33 38 (1 1/2) 1034 (150)
34 51 (2) 1034 (150) Enter the length in millimetres or inches.
42 25 (1) 2068 (300) For fractional lengths, enter 2(1/2) for 2-½ inches
43 38 (1 1/2) 2068 (300)
44 51 (2) 2068 (300) 5. FLANGE MATERIAL
52 25 (1) 4137 (600) 36 316 SS
53 38 (1 1/2) 4137 (600) 30 310 SS
54 51 (2) 4137 (600) 32 321 SS
Other flange sizes and pressure ratings are available. 46 446 SS
60 Inconel
4. STEM MATERIAL
MON Monel
STE Stellite
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 44
 TW 711 SERIES – THERMOWELLS: THREADED STRAIGHT
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

L
X

D1

1 2 3 4 5 6 7

TW 711 — — — — —

1. MODEL UNIT SYSTEM 7. STEPPED DIAMETER – “D1” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 6. INSERTION LENGTH – “X” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 5. STEM LENGTH – “L” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. PROCESS SIZE – MM (IN NPT)
A 13 (1/2)
B 19 (3/4)
C 25 (1)
D 32 (1 1/4)
E 38 (1 1/2)

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

JAN-18-EN-1128 PYROTEK INC.

Page 45 pyrotek.com
TW 712 SERIES – THERMOWELLS: THREADED TAPERED
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

D1

1 2 3 4 5 6 7

TW 712 — — — —

1. MODEL UNIT SYSTEM 7. TAPER DIAMETER – “D1” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 6. INSERTION LENGTH – “X” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 5. STEM LENGTH – “L” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. PROCESS SIZE – MM (IN NPT)
A 13 (1/2)
B 19 (3/4)
C 25 (1)
D 32 (1 1/4)
E 38 (1 1/2)

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 46
 TW 713 SERIES – THERMOWELLS: THREADED STEPPED
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

L
X

D1

D2
1 2 3 4 5 6 7 8

TW 713 — — — — —

1. MODEL UNIT SYSTEM 8. COLLAR DIAMETER – “D2” DIMENSION

E English Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 7. STEPPED DIAMETER – “D1” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 6. INSERTION LENGTH – “X” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. PROCESS SIZE – MM (IN NPT)
A 13 (1/2) 5. STEM LENGTH – “L” DIMENSION
B 19 (3/4)
Enter the length in millimetres or inches.
C 25 (1)
For fractional lengths, enter 2(1/2) for 2-½ inches
D 32 (1 1/4)
E 38 (1 1/2)

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

JAN-18-EN-1128 PYROTEK INC.

Page 47 pyrotek.com
TW 721 SERIES – THERMOWELLS: VANSTONE STRAIGHT
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

L
X

D1
D2

1 2 3 4 5 6 7 8 9

TW 721 — — — — — — —

1. MODEL UNIT SYSTEM 9. COLLAR DIAMETER – “D2” DIMENSION

E English Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it to
determine all the item’s measurements. 8. STEM DIAMETER – “D1” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 7. INSERTION LENGTH – “X” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. FLANGE SIZE – MM (IN) PRESSURE RATING – KPA (LB/IN2)
32 25 (1) 1034 (150) 6. STEM LENGTH – “L” DIMENSION
33 38 (1 1/2) 1034 (150) Enter the length in millimetres or inches.
34 51 (2) 1034 (150) For fractional lengths, enter 2(1/2) for 2-½ inches
42 25 (1) 2068 (300)
43 38 (1 1/2) 2068 (300)
44 51 (2) 2068 (300)
52 25 (1) 4137 (600)
53 38 (1 1/2) 4137 (600)
54 51 (2) 4137 (600)
Other flange sizes and pressure ratings are available.

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

5. FLANGE MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 48
 TW 722 SERIES – THERMOWELLS: VANSTONE TAPERED
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

D1

D2
D3

1 2 3 4 5 6 7 8 9 10

TW 722 — — — — — — — —

1. MODEL UNIT SYSTEM 10. COLLAR DIAMETER – “D3” DIMENSION

E English Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 9. TAPER DIAMETER – “D2” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 8. TAPER DIAMETER – “D1” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. FLANGE SIZE – MM (IN) PRESSURE RATING – KPA (LB/IN2)
32 25 (1) 1034 (150) 7. INSERTION LENGTH – “X” DIMENSION
33 38 (1 1/2) 1034 (150) Enter the length in millimetres or inches.
34 51 (2) 1034 (150) For fractional lengths, enter 2(1/2) for 2-½ inches
42 25 (1) 2068 (300)
43 38 (1 1/2) 2068 (300) 6. STEM LENGTH – “L” DIMENSION
44 51 (2) 2068 (300)
52 25 (1) 4137 (600) Enter the length in millimetres or inches.
53 38 (1 1/2) 4137 (600) For fractional lengths, enter 2(1/2) for 2-½ inches
54 51 (2) 4137 (600)
Other flange sizes and pressure ratings are available.

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

5. FLANGE MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

JAN-18-EN-1128 PYROTEK INC.

Page 49 pyrotek.com
TW 723 SERIES – THERMOWELLS: VANSTONE STEPPED
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

D1

D2
D3

1 2 3 4 5 6 7 8 9 10

TW 723 — — — — — — — —

1. MODEL UNIT SYSTEM 10. COLLAR DIAMETER – “D3” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it to
determine all the item’s measurements. 9. STEPPED DIAMETER – “D2” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 8. STEPPED DIAMETER – “D1” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. FLANGE SIZE – MM (IN) PRESSURE RATING – KPA (LB/IN2)
32 25 (1) 1034 (150) 7. INSERTION LENGTH – “X” DIMENSION
33 38 (1 1/2) 1034 (150) Enter the length in millimetres or inches.
34 51 (2) 1034 (150) For fractional lengths, enter 2(1/2) for 2-½ inches
42 25 (1) 2068 (300)
43 38 (1 1/2) 2068 (300)
6. STEM LENGTH – “L” DIMENSION
44 51 (2) 2068 (300)
52 25 (1) 4137 (600) Enter the length in millimetres or inches.
53 38 (1 1/2) 4137 (600) For fractional lengths, enter 2(1/2) for 2-½ inches
54 51 (2) 4137 (600)
Other flange sizes and pressure ratings are available.

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

5. FLANGE MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

PYROTEK INC. JAN-18-EN-1128

pyrotek.com Page 50
 TW 731 SERIES – THERMOWELLS: WELD-IN
Pyrotek’s standard and custom thermowells are available in a wide range of materials and sizes. Pyrotek also provides Wake
frequency calculations in accordance with ASME PTC 19.3.

L
X

D1

D2
1 2 3 4 5 6 7 8

TW 731 — — — — — —

1. MODEL UNIT SYSTEM 8. STEM DIAMETER – “D2” DIMENSION

E Imperial Enter the length in millimetres or inches.
M Metric For fractional lengths, enter 2(1/2) for 2-½ inches
Specify the required unit system and use it
to determine all the item’s measurements. 7. STEM DIAMETER – “D1” DIMENSION
Enter the length in millimetres or inches.
2. BORE – MM (IN) For fractional lengths, enter 2(1/2) for 2-½ inches
A 6.6 (0.260)
B 9.78 (0.385) 6. INSERTION LENGTH – “X” DIMENSION
C Other measurement (specify) Enter the length in millimetres or inches.
For fractional lengths, enter 2(1/2) for 2-½ inches
3. PROCESS SIZE – MM (IN NPT)
A 13 (1/2) 5. STEM LENGTH – “L” DIMENSION
B 19 (3/4) Enter the length in millimetres or inches.
C 25 (1) For fractional lengths, enter 2(1/2) for 2-½ inches
D 32 (1 1/4)
E 38 (1 1/2)

4. STEM MATERIAL
36 316 SS
30 310 SS
32 321 SS
46 446 SS
60 Inconel
MON Monel
STE Stellite

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A1 SERIES
A1 SERIES – THERMOCOUPLE ACCESSORIES AND WIRES
Pyrotek offers a variety of thermocouple accessories including plugs, jacks, compression fittings, replacement screw cover heads
and insulated thermocouple wires. These replacement parts are available and many other options can be requested.

COMPRESSION FITTINGS
Part Number *Description Part Number *Description
007252 SS Adjustable 3 mm (1/8 in) Tube x 3 mm (1/8 in) NPT 007130 Brass Adjustable 3 mm (1/8 in) Tube x 3 mm (1/8 in) NPT
007114 SS Adjustable 5 mm (3/16 in) Tube x 3 mm (1/8 in) NPT 008396 Brass Adjustable 5 mm (3/16 in) Tube x 3 mm (1/8 in) NPT
006141 SS Adjustable 6 mm (1/4 in) Tube x 3 mm (1/8 in) NPT 006140 Brass Adjustable 6 mm (1/4 in) Tube x 3 mm (1/8 in) NPT
007033 SS Adjustable 10 mm (3/8 in) Tube x 6 mm (1/4 in) NPT 006589 Brass Adjustable 6 mm (1/4 in) Tube x 6 mm (1/4 in) NPT
007399 SS Adjustable 6 mm (1/4 in) Tube x 6 mm (1/4 in) NPT 007207 Brass Adjustable 5 mm (3/16 in) Tube x 6 mm (1/4 in) NPT
013454 SS Adjustable 5 mm (3/16 in) Tube x 6 mm (1/4 in) NPT 007792 Brass Adjustable 3 mm (1/8 in) Tube x 6 mm (1/4 in) NPT
001342 SS Adjustable 10 mm (3/8 in) Tube x 13 mm (1/2 in) NPT 007156 Brass Adjustable 10 mm (3/8 in) Tube x 13 mm (1/2 in) NPT
007321 SS Readjustable 3 mm (1/8 in) x 3 mm (1/8 in) NPT 008405 Brass Adjustable 6 mm (1/4 in) Tube x 13 mm (1/2 in) NPT
* Adjustable = one time adjustable compression fitting

PLUGS AND JACKS

Part Number Description Part Number Description
015412 Standard Plug-K 218°C (425°F) 015413 Standard Jack-K 218°C (425°F)
010178 Standard Plug-K High Temp 427°C (800°F) 010179 Standard Jack-K High Temp 427°C (800°F)
007031 Standard Plug-N 218°C (425°F) 008099 Standard Jack-N 218°C (425°F)
007711 Standard Plug-J 218°C (425°F) 009469 Standard Jack-J 218°C (425°F)
007016 Cable Clamp Standard Temp 007000 Mini Jack-K 218°C (425°F)
007599 Cable Clamp High Temp Plug/Jack 007906 Mini Jack-J 218°C (425°F)
005831 Mini Plug-K 218°C (425°F) 007769 Cable Clamp for use with Mini Plug
007905 Mini Plug-J 218°C (425°F)

SCREW COVER HEADS AND BLOCKS

Part Number Description Part Number Description
011664 Cast Iron 13 mm (1/2 in) NPT Process Opening 005938 Cast Aluminium 13 mm (1/2 in) NPT Process Opening
005826 Cast Iron 19 mm (3/4 in) NPT Process Opening 005481 Cast Aluminium 19 mm (3/4 in) NPT Process Opening
005827 Cast Iron 25 mm (1 in) NPT Process Opening 013558 Cast Aluminium 25 mm (1 in) NPT Process Opening
000651 Single Thermocouple Block 2 Terminals 005825 Dual Thermocouple Block 4 Terminals

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 A1 SERIES

THERMOCOUPLE WIRE
Part Number TC Calibration AWG Conductor Outer Jacket Insulation Conductor Insulation *Limits of Error Temp Rating
006135 K 16 Solid Heavy Fibreglass Braid Serv-Tex Braid STD 288°C (550°F)
000982 K 20 Solid High Temp Glass Braid High Temp Glass Braid SLOE 704°C (1300°F)
007716 K 20 Solid FEP with Shield & Drain Wire FEP Teflon SLOE 204°C (400°F)
006804 K 20 Solid High Temp Glass Braid High Temp Glass Braid SLOE 704°C (1300°F)
007158 K 20 Solid Ceramic Fibre Ceramic Fibre STD 1204°C (2200°F)
008100 **KX 20 Solid PVC PVC EXT 105°C (221°F)
008245 K 20 Solid Fibreglass Braid Fibreglass Braid STD 482°C (900°F)
007574 K 20 Solid High Temp Glass Braid None SLOE 704°C (1300°F)
007112 K 20 Stranded High Temp Glass Braid High Temp Glass Braid SLOE 704°C (1300°F)
007352 K 20 Stranded FEP Teflon FEP Teflon STD 204°C (400°F)
005906 K 20 Stranded Double Fibreglass Braid Fibreglass Braid STD 482°C (900°F)
007093 K 24 Solid TFE TFE STD 260°C (500°F)
006850 J 20 Solid Double Fibreglass Braid Fibreglass Wrap STD 482°C (900°F)
007949 J 20 Solid Fibreglass Braid Fibreglass Braid SLOE 482°C (900°F)
007669 J 20 Solid FEP Teflon FEP Teflon STD 204°C (400°F)
006809 J 20 Stranded Double Fibreglass Braid Fibreglass Braid STD 482°C (900°F)
007907 J 20 Stranded Double Fibreglass Braid Fibreglass Braid STD 482°C (900°F)
000809 **SX 20 Solid Fibreglass Braid Fibreglass Braid STD 482°C (900°F)
* STD = standard. SLOE = special limit of error. EXT = extended.
** KX and SX = extension grade.
Stainless Steel overbraid options are available for thermocouple wire. Contact your Pyrotek Sales Representative for more information.

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THERMOCOUPLE PROTECTION TUBES

Plain Cast Iron

Plain cast iron tubes are designed to provide excellent physical strength for the charging of
scrap and ingot, for demanding environments including aluminium and zinc melting furnaces,
and other applications. The tube’s design creates a robust and durable option for temperature
measurement.
Applications Advantages
• Melting and holding furnaces • Robust and durable
• Degassing crucibles • Increased thickness and uniform wall
• Transfer equipment • 100 percent ultrasonic tested
• Reverberatory melting furnaces • Ideally suited when the tube length required
is longer than 1200 millimetres (48 inches)
Enamel Cast Iron
Enamel cast iron tubes are designed to provide excellent physical strength for the charging of
scrap and ingot, for demanding environments including aluminium and zinc melting furnaces and
other applications. The ceramic-based enamel coating provides for longer life and less routine
maintenance than uncoated tubes.
Applications Advantages
• Melting and holding furnaces • High quality coating provides oxidation
• Degassing crucibles resistance
• Transfer equipment • Robust and durable
• Reverberatory melting furnaces • Increased thickness and uniform wall
• 100 percent ultrasonic tested
• Ideally suited when the tube length required
is longer than 1200 millimetres (48 inches)
Sialon B100 Ceramic
Pyrotek Sialon B100 ceramic protection tubes provide high strength at room and operating
temperatures, have high corrosion and abrasion resistance and effective thermal shock
resistance. These tubes are also non-wetting to molten aluminium and its alloys.
Applications Advantages
• Low-pressure holding furnaces • High performance ceramic
• Crucible furnaces • High thermal conductivity
• Degassing crucibles • Excellent thermal shock resistance
• Holding furnaces • Corrosion resistance
• Melting furnaces • Non-wetting to aluminium and its alloys
• Transfer equipment • Less dross buildup at the metal line
• Troughs
SiN/Sialon
SiN/Sialon is a high strength, high density ceramic that provides thermocouple users with an
excellent protection tube choice. These tubes offer excellent chemical stability, prevent molten
aluminium contamination, provide long life, reduced maintenance costs, and require no surface
treatment.
Applications Advantages
• Low-pressure holding furnaces • High performance ceramic
• Melting furnaces • High thermal conductivity
• Transfer equipment • Excellent thermal shock
• Troughs • Corrosion resistance

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 THERMOCOUPLE PROTECTION TUBES

Pyrocast C-3
Pyrocast C-3 protection tubes are constructed of a phosphate bonded refractory material
developed for use in molten non-ferrous metals, specifically molten aluminium and zinc. This
tube has excellent non-wetting properties, which allows for easy slag removal. The tube’s smaller
diameter provides a fast thermal response to process temperature changes. Pyrocast C-3 tubes
also provide good resistance to thermal shock and mechanical breakage.
Applications Advantages
• Melting furnaces • Cost effective
• Degassing crucible • Excellent non-wetting properties
• Holding furnaces • Resistance to thermal shock
• Transfer equipment • Single unit design, ready to use
SiC-Graphite
SiC-Graphite tubes are non-wetting and also have good thermal shock properties, high abrasion
resistance and good response time. These tubes also exhibit good oxidation resistance due to
their microstructure and can be used in many applications.
Applications Advantages
• Melting furnaces • High thermal conductivity
• Degassing crucibles • Good life in metal
• Holding furnaces
• Transfer equipment
Pinnacle
Pyrotek’s Pinnacle thermocouple protection tubes are made from O’-Sialon, a long-life, non-
wetting, temperature sensitive (bonded silicon carbide) material. The Pinnacle tube’s properties
make it an excellent alternative to other tubes in temperature measurement. This tube also
provides excellent thermal shock resistance, less dross buildup at the metal line, and can provide
longer life.
Applications Advantages
• Crucible furnaces • Non-wetting to aluminium and its alloys
• Melting furnaces • Less dross buildup at the metal line
• Degassing crucibles • Excellent thermal shock resistance
• Holding furnaces
• Troughs
RFM®
Pyrotek’s reinforced fibreglass material (RFM®) thermocouple protection tubes are specifically
designed to provide a robust non-wetting product that will result in longer life. The RFM composite
is a fibreglass reinforced material with extremely high thermal shock resistance, and the ability to
withstand mechanical abuse. The tube’s SiC tip has excellent thermal conductivity which results
in fast response time to temperature fluctuations.
Applications Advantages
• Crucible furnaces • Non-wetting to aluminium and its alloys
• Degassing crucibles • Less dross buildup at the metal line
• Holding furnaces • Superior response time
• Melting furnaces • Narrow temperature control band for energy
• Troughs conservation
• Casting areas • Excellent thermal shock resistance

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THERMOCOUPLE PROTECTION TUBES

O’-Sialon
O’-Sialon tubes are a composite of SiC and O’-Sialon materials. They are ideally suited for use
in molten aluminium applications. The tubes are non-wetted by aluminium, have a high level
of oxidation resistance, high resistance to chemical corrosion, high abrasion resistance and
excellent thermal response properties.
Applications Advantages
• Low pressure holding furnaces • Excellent oxidation resistance
• Melting furnaces • Non-wetting to aluminium and its alloys
• Transfer equipment • Excellent thermal shock resistance
• Troughs
Clay Bonded SiC
Pyrotek’s Clay Bonded SiC tube has good non-wetting and thermal shock properties, high
abrasion resistance and good response time. The tube is also capable of withstanding direct
flame impingement.
Applications Advantages
• Melting and holding furnaces • Cost effective
• Degassing crucibles • Good thermal response
• Crucible furnaces • Non-wetting to aluminium and its alloys
• Transfer equipment
Alumina
Alumina thermocouple tubes are designed for a roof furnace at free air application in heat treat,
glass and ferrous metal industries. They are not intended for direct immersion into molten metal.
Applications Advantages
• Roof thermocouples • High temperature capabilities. Maximum
• Heat treat furnace thermocouples rating of 1870°C (3400°F)
• Kiln thermocouples • Moderate cost
• Vacuum furnace application • Fair resistance to thermal shock
• Impervious to gases at high temperatures
Mullite
Mullite thermocouple tubes are another option for a roof furnace at free air application, with a
lower temperature rating than alumina.
Applications Advantages
• Roof thermocouples • High temperature capabilities. Maximum
• Heat treat furnace thermocouples rating of 1510°C (2750°F)
• Kiln thermocouples • Low cost
• Good thermal shock resistance
• Impervious to gases at high temperatures
MC-1
MC-1 thermocouple tubes are specially designed for immersion in molten copper, brass, zinc
and lead. They are a unique blend of metal and ceramic. These tubes are also known as LT-1.

Applications Advantages
• Molten copper based alloy immersion • Can be used in oxidizing applications
• Surfer burner and blast furnaces • High temperature capabilities. Maximum
• Chemical process reactors rating of 1370°C (2500°F)

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THERMOCOUPLE PROTECTION TUBE MATRIX
*Always consult with a Pyrotek sales engineer to properly define the TCPT solution that’s right for your application.

*Thermocouple Protection Tube Type Typical Applications Initial Relative Relative Maximum Relative Available
Investment Mechanical Typical Life Working Response Models and
($$$$ is most Strength Temperature Time Configurations
expensive) (1=fastest)

FOR DIRECT IMMERSION TO MOLTEN ALUMINIUM

Reinforced Fibreglass Material (RFM). RFM thermocouple tubes are • Crucible Furnaces $$$ Refractory 3–6 months 800°C 3 Refer to the I5 and
engineered to provide robust, non-wetting qualities to aluminium and its alloys. This • Degassing Crucibles with steel pipe (1472°F) I6 series. For TCPT
fibreglass reinforced material coupled with an internal steel tube has the ability to • Holding Furnaces reinforced only refer to the T1
withstand mechanical abuse. RFM tubes are also an excellent option for use in the zinc • Troughs series.
industry.
Pinnacle. The unique properties of Pinnacle thermocouple tubes provide long-life • Melting Furnaces $$$ Refractory 3–6 months 1100°C 3 Refer to the I5 and
and non-wetting qualities, and they are ideal for foundry and other temperature-sensitive • Degassing Crucibles with steel pipe (2012°F) I6 series. For TCPT
applications. • Holding Furnaces reinforced only refer to the T1
• Transfer Equipment series.
• Reverb Melting Furnaces
O'-Sialon. O'-Sialon thermocouple tubes are ideally suited for use in the aluminium • Low Pressure Holding $$$ Strong without 2–4 months 1100°C 2 Refer to the I7 and
industry. They are non-wetting, have a high level of oxidation resistance, have high Furnaces pipe fitting (2012°F) I8 series. For TCPT
resistance to chemical corrosion, high abrasion resistance and provide excellent thermal • Melting Furnaces only refer to the T1
response. • Transfer Equipment series.
• Troughs
Cast Iron Plain/Cast Iron Enamel. Both plain and enamel coated cast iron • Melting Furnaces $–$$ Cast Iron 1–2 weeks 800°C 4 Refer to the I9
thermocouple tubes can withstand the rigors of a furnace environment. Their physical • Degassing Crucibles Strong (1472°F) series. For TCPT
strength is ideal for casthouse handling. Ceramic coated tubes provide a 25–50% longer • Holding Furnaces only refer to the T2
life than plain cast iron tubes. • Transfer Equipment series.
• Reverb Melting Furnaces
Recrystalized SiC. SiC-Graphite tubes are non-wetting and also have good thermal • Melting Furnaces $$$ Refractory 1–3 months 1500°C 3 Refer to the I5 and
shock properties, high abrasion resistance and good response time. These tubes also • Degassing Crucibles with steel pipe (2732°F) I6 series. For TCPT
exhibit good oxidation resistance due to their microstructure and can be used in many • Holding Furnaces reinforced only refer to the T1
applications. • Transfer Equipment series.
• Reverb Melting Furnaces
Sialon B100 / SiN. Silicon nitride thermocouple tubes are Pyrotek’s highest • Low Pressure Holding $$$$ Strongest 10–13 months 1100°C 1 Refer to the I7 and
performing ceramic technology. Their superior strength, high thermal conductivity, Furnaces without pipe (2012°F) I8 series. For TCPT
excellent thermal shock and corrosion resistance contribute to the longest service life in • Melting Furnaces fitting only refer to the T1
molten applications. • Transfer Equipment series.
• Troughs
NOT INTENDED FOR DIRECT IMMERSION INTO MOLTEN ALUMINIUM
INCONEL 601. Well known and standard material with great resistance to heat and • Open Carbon Bake Furnace: $$–$$$ Stainless Steel 7–9 months 1260°C 1 Refer to the IP and
corrosion. This thermocouple tube is not intended for direct immersion to molten metal. Preheat Section and Strong (2300°F) I4 series
Pit / Flue firing chambers
• Roof Furnace
• Heat Treat
Alumina. Alumina thermocouple tubes are designed for roof furnace at free air in heat • Roof Furnace $$$ Alumina 3–5 months 1600°C 5 Refer to the I4
treat, glass, and ferrous metal industries. They are not intented for direct immersion to • Heat Treat Ceramic (2912°F) series
molten metal.
Mullite. Mullite thermocouple tubes are another option for a roof furnace at free air • Roof Furnace $$$ Mullite 3–5 months 1400°C 5 Refer to the I4
application, with a lower temperature rating than alumina. • Heat Treat Ceramic (2552°F) series

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LETTER OF CALIBRATION

Thermocouples are classified by calibration type because they have differing electromotive force (EMF) versus temperature curves.
Some thermocouples generate considerably more voltage at lower temperatures, while others do not begin to develop a significant
voltage until they are subjected to high temperatures. Calibration types are designed to deliver as close to a straight line voltage curve
inside their temperature application range as possible. This makes it easier for an instrument or temperature controller to correctly
correlate the received voltage to a particular temperature.

BASE METAL TYPES

Type K
Type K is used extensively at temperatures up to 1260°C (2300°F). Type K works in most applications since it is nickel-based and has
good corrosion resistance. It is the most common sensor calibration type, and provides the widest operating temperature range.

Type N
This nickel based thermocouple alloy is used primarily at temperatures up to 1260°C (2300°F). While it is not a direct replacement for
Type K, Type N provides better resistance to oxidation at high temperatures and longer life in applications where sulfur is present.

Type J
Type J may be used, exposed or unexposed, where there is a deficiency of free oxygen. For cleanliness and longer life, a protection tube
is recommended for use with Type J. Since JP (iron) wire will oxidize rapidly at temperatures over 540°C (1000°F), it is recommended
that larger gauge wires be used to compensate for the loss. The maximum recommended operating temperature for Type J is 760°C
(1400°F). Type J is the second most common calibration of thermocouple and is a good choice for general purpose applications where
moisture is not present.

NOBLE METAL TYPES

Types S, R, B
The maximum recommended operating temperature for Type S or R is 1450°C (2640°F). Type B is recommended for use at temperatures
as high as 1700°C (3100°F). These thermocouples are easily contaminated. Noble metal thermocouples should always be protected
with a gas-tight ceramic tube, a secondary porcelain tube, and a silicon carbide or metal outer tube as conditions require.

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 TABLE 1 – TOLERANCES ON INITIAL VALUES OF EMF
VS. TEMPERATURE FOR THERMOCOUPLES

NOTE 1: Tolerances in this table apply to new, essentially homogeneous 0.25 to 3 millimeter diameter (No. 30 to No. 8 AWG)
thermocouple wire used at temperatures not exceeding the recommended limits of Table 2. If the wire is used at higher temperatures
these tolerances may not apply.

NOTE 2: For temperatures expressed in Celsius, the tolerance expressed in Farenheit is 1.8 times larger. Note that wherever
applicable, percentage-based tolerances must be computed from temperatures that are expressed in Celsius.

NOTE 3: CAUTION—Users should be aware that certain characteristics of thermocouple materials, including the EMF versus
temperature relationship may change in time with use. Consequently, test results and performance obtained at time of manufacture may
not necessarily apply throughout an extended period of use. Tolerances given in this table apply only to new wire as delivered to the
user and does not allow for changes in characteristics with use. The magnitude of such changes depends on factors such as wire size,
temperature, time of exposure and environment. It should also be noted that due to possible changes in homogeneity, attempting to
recalibrate used thermocouples is likely to yield irrelevant results, and is not recommended. However, it may be appropriate to compare
used thermocouples in-situ with new or known good thermocouples to ascertain their suitability for further service under the conditions
of the comparison.
THERMOCOUPLE TYPE TEMPERATURE RANGE TOLERANCES-REFERENCE JUNCTION 0°C (32°F)
Standard Tolerances Special Tolerances
°C °F °C °C
°F °C
(whichever is greater) (whichever is greater)
T 0–370 32–700 ±1 or ±0.75% Note 2 ±0.5 or 0.4% Note 2
J 0–760 32–1400 ±2.2 or ±0.75% ±1.1 or ±0.4%
E 0–870 32–1600 ±1.7 or ±0.5% ±1 or ±0.4
K or N 0–1260 32–2300 ±2.2 or ±0.75% ±1.1 or ±0.4%
R or S 0–1480 32–2700 ±1.5 or ±0.25% ±0.6 or ±0.1%
B 870–1700 1600–3100 ±0.5% ±0.25%
C 0–2315 32–4200 ±4.4 or 1% Note 2
T A
-200–0 -328–32 ±1 or ±1.5% B
EA -200–0 -328–32 ±1.7 or ±1% B
KA -200–0 -328–32 ±2.2 or ±2% B

A
Thermocouples and thermocouple materials are normally supplied to meet the tolerances specified in the table for temperatures above
0°C (°F). The same materials, however, may not fall within the tolerances given for celsius temperatures in the second section of the
table. If materials are required to meet the tolerances stated for temperatures below 0°C the purchase order must so state. Selection of
materials usually will be required.

B
Special tolerances for temperatures below 0°C (°F) are difficult to justify due to limited information available. However, the following
values for Types E and T thermocouples are suggested as a guide for discussion between purchaser and supplier.
Type E: -200 to 0°C ± 1°C or ± 0.5% (whichever is greater)
Type T: -200 to 0°C ± 0.5°C or ± 0.8% (whichever is greater)
Initial values of tolerance for Type J thermocouples at temperatures below 0°C (°F) and special tolerances for Type K thermocouples
below 0°C (°F) are not given due to the characteristics of the materials.

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TABLE 2 – SUGGESTED UPPER TEMPERATURE LIMITS
FOR PROTECTED THERMOCOUPLES

NOTE 1: This table gives the recommended upper temperature limits for the various thermocouples and wire sizes. These limits
apply to protected thermocouples or thermocouples with conventional closed-end protecting tubes. The limits do not apply to sheathed
thermocouples with compacted mineral oxide insulation.

NOTE 2: The temperature limits listed here are intended only as a guide to the user and should not be taken as absolute values nor as
guarantees of satisfactory life or performance. These types and sizes are sometimes used at temperatures above the given limits, but
usually at the expense of stability, or life, or both. In other instances it may be necessary to reduce the limits in order to achieve adequate
service. ASTM MNL-12A and other literature sources should be consulted for additional application information.

UPPER TEMPERATURE LIMIT FOR VARIOUS WIRE SIZES (AWG), °C (°F)

THERMOCOUPLE NO. 8 GAUGE NO. 14 GAUGE NO. 20 GAUGE NO. 24 GAUGE NO. 28 GAUGE NO. 30 GAUGE
TYPE 3.25 mm 1.63 mm 0.81 mm 0.51 mm 0.33 mm 0.25 mm
(0.128 in) (0.064 in) (0.032 in) (0.020 in) (0.013 in) (0.010 in)
T 370 (700) 260 (500) 200 (400) 200 (400) 150 (300)
J 760 (1400) 590 (1100) 480 (900) 370 (700) 370 (700) 320 (600)
E 870 (1600) 650 (1200) 540 (1000) 430 (800) 430 (800) 370 (700)
K and N 1260 (2300) 1090 (2000) 980 (1800) 870 (1600) 870 (1600) 760 (1400)
R and S 1480 (2700)
B 1700 (3100)
CB 2315 (4200)C

A
Manual on the Use of Thermocouples in Temperature Measurement, ASTM MNL-12, 1993.

B
Type C thermoelements cannot operate in presence of oxygen; therefore, protection for these thermocouples must provide an inert or
non-oxidizing environment.

C
No. 24 Gauge thermoelements are common for this thermocouple type, but other sizes are possible and with adequate protection are
generally useable over the same temperature range.

THERMOCOUPLE CALIBRATION REQUIREMENTS

Pyrotek offers lot and individual certification of thermocouples in compliance with one or more applicable industry standards including
ASTM E-207, E-200, E-230, ITS 90 and AMS2750D. Temperature test points are determined by individual customer requirements
and specifications. All results are traceable to NIST Standards as required in the applicable standards. Please consult the factory to
determine availability and costs for your testing requirements.

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 THERMOCOUPLE ELEMENTS, JUNCTIONS AND
SHEATHS

THERMOCOUPLE ELEMENTS
Base Metal (Industrial) Element
• Easily fabricated
• Ceramic bead insulation
• Unprotected hot junction
• Susceptible to green rot
• Commonly used in low cost TCPT

Mineral Insulated Metal-Sheathed Cable (MgO or MI)

• Formable and have the ability to withstand corrosive environment
• Metal sheath enclosing a highly compacted powder material, typically magnesium
oxide (MgO)
• Temperature range from -200 to +1250°C (-328 to 2282°F)
• Diameter range from 0.25 to 13 millimetres (0.010 to 0.5 inches)

JUNCTIONS
All junctions are welded by the inert gas method to ensure performance and to prevent contamination from the sheath/insulation.

EXPOSED GROUNDED UNGROUNDED

• Exposed junction wires are welded to form a junction that extends beyond the sheath for a distance equal to the sheath
diameter. These are used where a fast response is required and contamination is not a factor
• Grounded junction is welded directly to the sheath. These provide good thermocouple protection against pressure, moisture
and mechanical damage, yet retain good response characteristics
• Ungrounded junction is electrically and mechanically insulated from the sheath for long life characteristics under maximum
corrosion, thermal shock, and vibration conditions

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THERMOCOUPLE ELEMENTS, JUNCTIONS AND SHEATHS

SHEATH MATERIAL

304 SS (Stainless Steel)

• Maximum temperature of 900°C (1650°F)
• Most widely used low temperature sheath material
• Extensively used in food, beverage, chemical and other industries where corrosion resistance is required

316 SS (Stainless Steel)

• Maximum temperature of 900°C (1650°F)
• Best corrosion resistance of the austenitic stainless steel grades
• Widely used in the food and chemical industry
• Subject to damaging carbide precipitation in the 482–870°C (900–1600°F) range

310 SS (Stainless Steel)

• Maximum temperature of 1150°C (2100°F)
• Mechanical and corrosion resistance, similar to but better than the 304 SS
• Very good-heat resistance
• This alloy contains 25% chromium and 20% nickel
• Not as ductile as 304 SS

446 SS (Stainless Steel)

• Maximum temperature of 1150°C (2100°F)
• Made of stainless steel which has good resistance to sulfurous atmospheres at high temperatures
• Good corrosion resistance to nitric acid, sulfuric acid and most alkalis
• The 27% chromium content gives this alloy the highest heat resistance of any stainless steel

Alloy 600
• Maximum temperature of 1175°C (2150°F)
• Most widely used thermocouple sheath material
• High temperature strength
• Corrosion resistant
• Resistant to chloride ion corrosion
• Oxidation resistance to high temperature
• Do not use in sulfur bearing environments
• Good in nitrating environments

Pyrocable
• Maximum temperature of 1260°C (2300°F)
• Similar to Alloy 600 with the addition of aluminium for outstanding oxidation resistance
• Designed for high temperature corrosion resistance
• This material is good in carburizing environments, and has good creep rupture strength

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 TABLE 3 – UNITED STATES COLOR CODES FOR
SINGLE AND DUPLEX INSULATED THERMOCOUPLE
WIRE

NOTE 1: Data in this table represents customary practices in the United States of America. Different colour code conventions may be
found in use in other countries.

NOTE 2: For some types of insulations colours may appear as a stripe or trace strand. High temperature braided insulation is not
normally colour coded.

THERMOCOUPLE TYPE THERMOELEMENT INDIVIDUAL CONDUCTOR OVERALL JACKET

DESIGNATION COLOR COLOR
T TP (+) Blue Brown
TN (-) Red
J JP (+) White Brown
JN (-) Red
E EP (+) Purple Brown
EN (-) Red
K KP (+) Yellow Brown
KN (-) Red
N NP (+) Orange Brown
NN (-) Red

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TABLE 4 – IEC COLOR CODES FOR INSULATED
THERMOCOUPLE WIRE AND EXTENSION MATERIALS

NOTE 1: Data in this table are taken from IEC Standard 584-3. These colours are not compatible with the traditional colours widely
used in the United States.

NOTE 2: For some types of insulations colours may appear as a stripe or trace strand. High temperature braided insulation is not
normally colour coded.

NOTE 3: The noble metal thermocouples are not normally supplied with coloured insulations, however, if they were furnished, the colour
codes would be those provided in the following table.

NOTE 4: The IEC colour coding system does not distinguish by color among thermocouple, extension, and compensating cables.
Instead, a system of code letters are used to designate such cables. A single letter without a suffix denotes a thermocouple cable, an
additional suffix “X” indicates an extension cable, and a suffix “C” is used to represent a compensating cable. Although the following
table includes all three cable designations for each type, this should not be taken to mean that all three classes of cable are necessarily
available for every type.

THERMOCOUPLE CABLE THERMOELEMENT INDIVIDUAL CONDUCTOR OVERALL JACKET COLOR

TYPE POLARITY COLOR
T, TX, TC (+) Brown Brown
(-) White
J, JX, JC (+) Black Black
(-) White
E, EX, EC (+) Purple Purple
(-) White
K, KX, KC (+) Green Green
(-) White
N, NX, NC (+) Pink Pink
(-) White
B, BX, BCA (+) Gray Grey
(-) White
R, RX, RCB (+) Orange Orange
(-) White
S, SX, SCB (+) Orange Orange
(-) White

A
Colour code is applicable to constructions incorporating proprietary Type B compensating alloy wires. When uncompensated (copper/copper)
extension materials are used with Type B thermocouples (at low temperatures and over limited temperature spans) the extension wire insulation is
not normally color coded.

Type R and S thermocouples utilize the same compensating cable.

B

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 TEMPERATURE CONVERSION TABLE

°C °F °C °F °C °F °C °F °C °F
-273 -459.4 -10.6 13 22.8 73 216 420 560 1040
-268 -450 -10.0 14 23.3 74 221 430 571 1060
-262 -440 -9.4 15 23.9 75 227 440 582 1080
-257 -430 -8.9 16 24.4 76 232 450 593 1100
-251 -420 -8.3 17 25.0 77 238 460 604 1120
-246 -410 -7.8 18 25.6 78 243 470 616 1140
-240 -400 -7.2 19 26.1 79 249 480 627 1160
-234 -390 -6.7 20 26.7 80 254 490 638 1180
-229 -380 -6.1 21 27.2 81 260 500 649 1200
-223 -370 -5.6 22 27.8 82 266 510 660 1220
-218 -360 5.0 23 28.3 83 271 520 671 1240
-212 -350 -4.4 24 28.9 84 277 530 682 1260
-207 -340 -3.9 25 29.4 85 282 540 693 1280
-201 -330 -3.3 26 30.0 86 288 550 704 1300
-196 -320 -2.8 27 30.6 87 293 560 732 1350
-190 -310 -2.2 28 31.1 88 299 570 760 1400
-184 -300 -1.7 29 31.7 89 304 580 788 1450
-179 -290 -1.1 30 32.2 90 310 590 816 1500
-173 -280 -.6 31 32.8 91 316 600 843 1550
-169 -273 0 32 33.3 92 321 610 871 1600
-168 -270 .6 33 33.9 93 327 620 899 1650
-162 -260 1.1 34 34.4 94 332 630 927 1700
-157 -250 1.7 35 35.0 95 338 640 954 1750
-151 -240 2.2 36 35.6 96 343 650 982 1800
-146 -230 2.8 37 36.1 97 349 660 1010 1850
-140 -220 3.3 38 36.7 98 354 670 1038 1900
-134 -210 3.9 39 37.2 99 360 680 1066 1950
-129 -200 4.4 40 37.8 100 366 690 1093 2000
-123 -190 5.0 41 43 110 371 700 1121 2050
-118 -180 5.6 42 49 120 377 710 1149 2100
-112 -170 6.1 43 54 130 382 720 1177 2150
-107 -160 6.7 44 60 140 388 730 1204 2200
-101 -150 7.2 45 66 150 393 740 1232 2250
-96 -140 7.8 46 71 160 399 750 1260 2300
-90 -130 8.3 47 77 170 404 760 1288 2350
-84 -120 8.9 48 82 180 410 770 1316 2400
-79 -110 9.4 49 88 190 416 780 1343 2450
-73 -100 10.0 50 93 200 421 790 1371 2500
-68 -90 10.6 51 99 210 427 800 1399 2550
-62 -80 11.1 52 100 212 432 810 1427 2600
-57 -70 11.7 53 104 220 438 820 1454 2650
-51 -60 12.2 54 110 230 443 830 1482 2700
-46 -50 12.8 55 116 240 449 840 1510 2750
-40 -40 13.3 56 121 250 454 850 1538 2800
-34 -30 13.9 57 127 260 460 860 1566 2850
-29 -20 14.4 58 132 270 466 870 1593 2900
-23 -10 15.0 59 138 280 471 880 1621 2950
-17.8 0 15.6 60 143 290 477 890 1649 3000
-17.2 1 16.1 61 149 300 482 900
-16.7 2 16.7 62 154 310 488 910
-16.1 3 17.2 63 160 320 493 920
-15.6 4 17.8 64 166 330 499 930
-15.0 5 18.3 65 171 340 504 940
-14.4 6 18.9 66 177 350 510 950
-13.9 7 19.4 67 182 360 516 960
-13.3 8 20.0 68 188 370 521 970
-12.8 9 20.6 69 193 380 527 980
-12.2 10 21.1 70 199 390 532 990
-11.7 11 21.7 71 204 400 538 1000
-11.1 12 22.2 72 210 410 549 1020

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INCH TO MILLIMETRE CONVERSION TABLE
1 inch equals 25.4 millimetres

Fraction Decimal Millimetre Fraction Decimal Millimetre

1/64 .0156 .3962 33/64 .5156 13.0962
1/32 .0313 .7950 17/32 .5313 13.4950
3/64 .0469 1.1913 35/64 .5469 13.8913
1/16 .0625 1.5875 9/16 .5625 14.2875
5/64 .0781 1.9837 37/64 .5781 14.6837
3/32 .0938 2.3825 19/32 .5938 15.0825
7/64 .1094 2.7788 39/64 .6094 15.4788
1/8 .1250 3.1750 5/8 .6250 15.8750
9/64 .1406 3.5712 41/64 .6406 16.2712
5/32 .1563 3.9700 21/32 .6563 16.6700
11/64 .1719 4.3663 43/64 .6719 17.0663
3/16 .1875 4.7625 11/16 .6875 17.4625
13/64 .2031 5.1587 45/64 .7031 17.8587
7/32 .2188 5.5575 23/32 .7188 18.2575
15/64 .2344 5.9538 47/64 .7344 18.6538
1/4 .2500 6.3500 3/4 .7500 19.0500
17/64 .2656 6.7462 49/64 .7656 19.4462
9/32 .2813 7.1450 25/32 .7813 19.8450
19/64 .2969 7.5413 51/64 .7969 20.2413
5/16 .3125 7.9375 13/16 .8125 20.6375
21/64 .3281 8.3337 53/64 .8281 21.0337
11/32 .3438 8.7325 27/32 .8438 21.4325
23/64 .3594 9.1288 55/64 .8594 21.8288
3/8 .3750 9.5250 7/8 .8750 22.2250
25/64 .3906 9.9212 57/64 .8906 22.6212
13/32 .4063 10.3200 29/32 .9063 23.0200
27/64 .4219 10.7163 59/64 .9219 23.4163
7/16 .4375 11.1125 15/16 .9375 23.8125
29/64 .4531 11.5087 61/64 .9531 24.2087
15/32 .4688 11.9075 31/32 .9688 24.6075
31/64 .4844 12.3038 63/64 .9844 25.0038
1/2 .5000 12.7000 1 1.0000 25.4000

Tables 1, 2 and 3 were extracted from ASTM E230-03 “Standard Specifications and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples.”
.

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 GLOSSARY OF TERMS

Ambient Temperature: The average or mean temperature of the surrounding environment in contact with the sensor or equipment
concerned.

Annealing: Heat treatment of materials to relieve internal stresses and dislocations.

ASTM: A nonprofit organization that develops and publishes technical standards used worldwide. ASTM also serves as the administrator
for the U.S. Technical Advisory Group (TAG) to an enormous amount of ISO technical committees and their subcommittees.

Base Metals: Metals that oxidize, tarnish or corrode relatively easily when exposed to air or moisture—aluminium, copper, lead,
nickel, tin and zinc.

Bonded Hot Junction: Refers to a type of mineral insulated thermocouple where the measuring junction is integral to the tip of the
sheath, and thus electrically grounded to it.

Calibration: The process of determining or adjusting values of an instrument by independent measurements of the relevant
phenomenon.

Celsius: A temperature scale where 0°C is the ice point and 100°C is the boiling point of water.

Ceramic Insulation: High temperature compositions of metal oxides insulating thermocouple wires—most commonly alumina,
beryllia and magnesium oxide; available as single and multi-hole tubes and as beads.

Cold Junction: Original name for the reference junction of a thermocouple—now implying a floating temperature.

Colour Codes: The IEC standard color identification and tolerance codes for thermocouple extension and compensating cables and
connectors.

Compensating Cable: Cable for extending thermocouple circuits more cheaply. It has conductors that, in combination, match the
thermocouple characteristics over a limited temperature range.

Compensator: An externally powered electrical network containing a temperature sensitive element connected to a thermocouple to
provide an equivalent 0°C reference voltage.

Connection Head: A cover or enclosure fitted over a thermocouple protection tube at the end furthest from the sensor. It contains
electrical terminals that allow convenient connection of the sensor to the rest of the circuit.

Drift: Shift of a signal or reading over a long period due to factors like ambient temperature change, hysteresis of the sensor and other
physical, chemical and electromagnetic effects.

Duplex: A name commonly given when two thermocouples are housed in the same probe.

EMF: Abbreviation for electromotive force—the electrical potential difference developed by sources of energy in electrical circuits.

EMI: Electromagnetic interference.

Emissivity: The ratio of emitted energy from a surface compared with a black body at the same temperature.

Exposed Junction: A form of faster response thermocouple probe constructed such that the measuring junction protrudes beyond
the sheath, and is thus fully exposed to the medium being measured.

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GLOSSARY OF TERMS

Extension Cable: A method of extending thermocouple circuits with lower cost or more suitable types of wiring cable—contains
similar materials to those of the thermocouple itself.

Fahrenheit Scale: A temperature scale where 32°F is the ice point; and 212°F is the boiling point of water.

Ground: The reference point for an electrical system.

Grounded Junction: Construction of a thermocouple probe where the measuring junction is in electrical contact with the sheath so
that sheath and thermocouple are at the same potential.

Heat Transfer: Thermal energy flow from one body having higher energy to a body of lower energy—by conduction, convection and
radiation.

Hot Junction: Original and commonly used name for the measuring junction of the thermocouple. See measuring junction.

Impedance: Total resistance to electrical current flow (resistive plus reactive).

Insulated Hot Junction: A form of construction adopted primarily for mineral insulated thermocouple units where the measuring
junction is separated and electrically insulated from the cable sheath.

Junction: The point in a thermocouple where the two dissimilar metals are joined. See measuring junction.

Kelvin: 1 Kelvin is equal to 1°Celsius.

Linearity: The deviation of an instrument’s response from a straight line.

Maximum Operating Temperature: The maximum ambient, continuous temperature at which an instrument or sensor can be
safely operated.

Mean Temperature: The average of the maximum and minimum temperatures of a process in equilibrium.

Measuring Junction: The electrical connection that comprises one end of the conductors in a thermocouple, and is used as the
temperature sensor. See hot junction.

Melting Point: The temperature at which a substance transforms state from the solid phase to the liquid phase.

MI (Mineral Insulated) Thermocouple: Common name for a thermocouple unit manufactured from metal sheathed, mineral
insulated thermocouple cable.

Noble Metals: Metals which tend towards a positive electrochemical potential, are inert and have a high resistance to corrosion and
oxidation—gold, silver and platinum.

Noise: An unwanted electrical interference on the signal wires.

Platinum Metals: Platinum, osmium, iridium, palladium, rhodium and ruthenium. Platinum has a melting point of 1700°C (3100°F),
and is used for resistance thermometry. Together with iridium and rhodium alloys, it is also used in thermocouple thermometry. See
Noble metals.

Polarity: The sign (positive or negative) of an electrical conductor.

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 GLOSSARY OF TERMS

Protection Head: A cover or enclosure fitted over a thermocouple protection tube at the end furthest from the sensor. It contains
electrical terminals to allow convenient connection of the sensor to the rest of the circuit. See “Connection Head”.

Protection Tube: A closed end, cylindrical sleeve fitted over a sensor to provide mechanical and environmental protection. Can be
made from metal, plastic, ceramic or refractory material.

Resistance: The restriction to electrical current flow through a material, measured in Ohms. For a conductor wire, resistance is a
function of diameter, length and resistivity (resistance per unit length—a physical material property).

Response Time: The time interval between the application of a sudden change of temperature to a sensor and the attainment of a
given output. The change is frequently defined as 63.2% of the final value.

Sensitivity: The output response, measured in time or magnitude, developed by a thermocouple for a given temperature change.

Sheathed MI Cable: A cable comprising one or more conductors embedded in a powdered insulant and surrounded by a metal
sheath. The final diameter is produced by drawing or swaging.

Signal: General term for an electrical current or voltage representing a quantity or event.

Thermal Conductivity: The rate at which heat flows through a material for a given temperature difference applied to it, with no gain
or loss of heat by the material.

Thermal Expansion: The increase in material size resulting from an increase in temperature—thermal coefficient is normally
expressed as the length change per degree Centigrade.

Thermocouple: An electrical circuit comprising two dissimilar materials. A voltage is generated that is dependent on the temperatures
at the junctions forming the limits of the dissimilar materials. The reference junction at one end of the conductors is usually maintained
at 0°C to allow the measuring junction to be used as a temperature sensor.

Transducer: A device that converts a physical quantity into a related electrical signal. For example, a resistance thermometer,
thermocouple or strain gauge.

Transmitter: A device incorporating an electrical circuit that converts a signal from a transducer into a standard transmittable form—
typically, a two wire DC current output ranging from 4–20 mA.

Ungrounded Junction: A thermocouple probe constructed so the measuring junction is fully enclosed by, and insulated from, the
sheath material.

INCONEL® is a registered trademark of the Special Metals Corporation group of companies.

RFM® is a registered trademark of Pyrotek Inc.
DuPont™ Teflon® is a registered trademark of E.I. du Pont de Nemours and Company or its affiliates

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pyrotek.com/thermocouples JAN-18-EN-1128