100

Content

Corporate Profile
90
A leader in the field of sensor instrumentation,
Eutech Instruments is a dynamic company
rapidly positioning itself globally as a
leading manufacturer of electrochemical
instrumentation for water analysis. A pioneer
in developing ASIC-based (Application
Specific Integrated Circuit) instruments,
Eutech Instruments has gained international
awards and recognition for its achievements
in sensor technology, software programming
and product design. Underlying its strong
commitment to Research & Development, is
the constant drive by Eutech engineers to apply
new, emerging technologies to the design and
manufacture of advanced sensor instruments.
Eutech offers a comprehensive range of
laboratory and field instrumentation for water
analysis and continuous online process
instruments for the monitor and control of pH,
Conductivity, Total Dissolved Solids (TDS),
Turbidity, Temperature, Ion Concentration,
Redox Potential (ORP) and Dissolved Oxygen
(DO). The Digi-Sense range of temperature
products, now manufactured by Eutech,
complements Eutechs product line-up in
electrochemistr y. Eutechs products are
certified to comply with global standards for
electromagnetic emission and interference.
Eutech Instruments is dedicated to producing
convenience products for Water analysis and
Thermometry.

Introduction

Digi-Sense
Thermocouple
Thermometers

Digi-Sense RTD
Thermometers

Digi-Sense
Thermistor
Thermometers

Digi-Sense
Handheld
Humidity
Dataloggers

Digi-Sense
12-Channel
Scanning
Thermometers

80

70

60

50

40

30

10 Digi-Sense
Temperature
Controllers
20

11 Temperature
Probes
10

13 Application Guide

1
Introduction
Digi-Sense thermometers deliver quick, reliable and accurate
temperature readings. Eutech Instruments manufactures a wide range
of portable hand-held meters with distinctive features for a wide
range of applications. These intrinsically safe UL-listed thermometers
meet the needs of chemical, laboratory, petrochemical and HVAC
specialty applications.

For almost every temperature/humidity monitoring application there

is a Digi-Sense digital instrument. Choose any of the following :

Type J, K, or T Thermocouple meters that are economical and easy

-to-use.
Dual input type J-T-E-K Thermocouple meter with 2-point calibration
and differential temperature feature.
DuaLogR Thermocouple and Logger Thermometer that logs up to
1000 readings in real-time and transfers data via infrared or
RS232 interface adapter (to be used with most popular RS232
programs including Windows Terminal, 95, 98 or Hyperterminal).
RTD Thermometers from basic simple-to-use model to a more
sophisticated model that logs up to 1000 readings in real time
with data transfer.

Thermistor Thermometers that accept a wide variety of YSI series

400 or series 700 thermistor probes. Select a simple-to-use model
or a more sophisticated model that logs up to 1000 readings with
data transfer.
Temperature and Humidity Datalogger meter that retains up to
1000 sets of readings with date and time, and transfers data via
infrared or RS232 (via adapter)
12-channel Scanning and Datalogging Thermometers (wallmounted and bench models) that feature software, alarms, a full
menu of display options, and NIST-traceable calibration.
Temperature Controllers with On/Off or PID control, and several
modes in between. A deluxe version model is available with
programmable ramp and soak functions to achieve precise heating
and cooling results in speciality applications. A software (included
with advanced models) allows real-time datalogging.

Handy and ergonomic in design, these meters are manufactured

for long term reliability and rugged field use. Go further, measure
better, and manage measurements better with the Digi-Sense
thermometers.

Temperature Introduction
Temperature Instrument Ranges

of the temperature bar represents the widest range the instrument

can be used in. Accuracy in this range is not guaranteed. Probe
damage may occur at the extreme ends of the temperature range.
Temperatures listed below are approximate.

The stated accuracy of any temperature measurement device is for

the Recommended Temperature Range only. The narrow section
Key to Colour Bar

-273C
-460F

-156C

-18C

121C

260C

398C

537C

676C

815C

954C

1093C

1648C

250F

0F

250F

500F

750F

1000F

1250F

1500F

1750F

2000F

3000F

2204C 3037C
4000F

5500F

Recommended Temperature Range

Widest Possible Temperature Range

694 Platinum RTD

-183

Typical Accuracies
Platinum RTD
Probes : 0.2 to 0.35% of reading
Meter : 0.1% of reading and
1 C (1 F)

-40

150 400 Series

Thermistor

-40

150 700 Series

400 series
probes
500 series
probes
700 series
probes
Meters

: 0.2 C (0.36 F) from

0 to 75 C (32 to 167 F)
: 0.1 C (0.2 F)

225
70

: 0.15 C (0.27 F)

500 Series

: 0.1 C to 0.2 C
(0.2 to 0.4 F)

Type J, K and E
probes
Type T probes
Type R and S
probes

: 1.8 to 7.9 F or 0.4%

of reading above 32 F,
whichever is greater
: 0.9 to 3.6 F or 0.4%
of reading above 32 F,
whichever is greater
: 2.5 F or 0.25% of
reading, whichever is
greater
: 0.1 to 1% of reading
and 1 C (1.8 F)

Temperature
F = (1.8 x C) +32
C = (F32) x 0.555
Kelvin = C + 273.2
Rankin = F + 459.67

-250

-250

752

Type J

184

1260

Type K

700

1000

752

1375

Thermocouple

-190.0

Thermocouple

Meters

Thermistor

Type T
871

Type E

899

Type R

1482

1766

Type S

1482

1766

Digi-Sense Thermocouple
Thermometers

Type J, K, or T Thermocouple Thermometers

Easy to use automatic field calibration for improved meter accuracy
Up to 0.1 resolution for improved readability
Intrinsically safe UL listed & certified for Class 1, Division 1 Groups: A, B, C, and D
harzardous (classified) locations
These easy-to-use portable meters are ideal for routine
temperature monitoring applications. Display is C
or F selectable. HOLD function freezes display for
easy viewing and recording. Meter resolution (0.1
or 1) auto-switches for easy readability.
Meter allows automatic offset calibration - simply place
the probe in a container packed with ice, filled with
water and it automatically recognizes the freezing
point. Calibration lockout feature prevents tampering
and protects factory setting.
Factory calibrated to a NIST-traceable calibrator, these
thermometers have 0.03C (0.05F) conformity
to NIST calibration tables.
Thermocouple probes produce fast response and are
extremely popular. K thermocouples have the widest
temperature range, J has ruggedness and reliability
while T has narrow range which is ideal for cryogenics,
food and research applications below 90 C. A wide
range of thermocouple probes (with mini-connectors)
are available to meet discerning application needs.

Meter Specifications
Range

J : -200 to 1000 C (-328 to 1832 F)

K : -250 to 1372 C (-418 to 2501 F)
T : -250 to 400 C (-418 to 752 F)

Resolution

: 0.1 between -99.9 and 299.9 C;

1 below -99.9 and above 299.9 C

Accuracy

: Below -99.9 C/F; 0.25% of reading plus 1 C (2 F)

Display

: 33/4 - digit custom LCD

Power

: 2 x AA alkaline batteries (included), >700 hours continuous

Dimensions

: 84mm W x 158mm H x 30mm D

Weight

: 0.5 kg

Above -99.9 C/F; 0.2% of reading plus 0.5 C (0.9 F)

Ordering Information
60010-00 Type J Thermocouple Thermometer
60010-10 Type K Thermocouple Thermometer
60010-20 Type T Thermocouple Thermometer
Probe to be ordered separately. Refer to page 11 and 12 for selection.

Digi-Sense Thermocouple
Thermometers

Dual Input J-T-E-K Thermocouple

Thermometer

Differential temperature measurements using the T1/T2 function can

be performed for easy viewing. The meter resolution (0.1 or 1) autoswitches or manually selectable via keypad for improved readability.

Multi-line display shows minimum, maximum, and differential

temperatures simultaneously

Manual field calibration is possible either on a single- or dual-point

calibration for each probe to any known temperature standard. Twopoint calibration adjusts for the offset and slope. Meter automatically
stores and self-corrects inherent probe error for best Meter + Probe
system accuracy. Calibration lockout protects NIST traceable factory
settings and prevents tampering.

Accepts up to 2 thermocouple inputs - either J, K, T or E type

Non-volatile memory stores up to 25 data sets
Intrinsically safe, UL listed & certified for Class 1, Division 1
Groups: A, B, C, and D harzardous (classified) locations
Take differential temperature measurements

The Digi-Sense dual J-T-E-K thermocouple thermometer allows single or

simultaneous dual-channel temperature measurements. This handy meter
accepts most types of J, T, E and K thermocouple probes, and displays
maximum, minimum, differential temperature measurements at a touch
of buttons. It also offers selectable resolution, C/F measurement mode,
single/dual probe capability, HOLD function and auto-power off.

Meter Specifications
Range

: -200 to 1000C (-328 to 1832F)

K
T
E

: -250 to 1372C (-418 to 2501F)

: -250 to 400C (-418 to 752F)
: -250 to 1000C (-418 to 1832F)

Resolution

: 0.1 between -150 and 999.9C;

1 below -150 and above 999.9C

Accuracy

: Above -150C(-238F): 0.1% of reading plus 0.4C (0.7F)

Display

: Multi-line 4 - digit custom LCD

Power

: 2 x AA alkaline batteries (included), >700 hours continuous

Dimensions

: 84mm W x 158mm H x 30mm D

Weight

: 0.5 kg

Below -150C (-238F): 0.25% of reading plus 1C (2F)

Ordering Information
60010-40

Dual Input JTEK Thermocouple Thermometer

Probe to be ordered separately. Refer to page 11 and 12 for selection.

Handheld Meters Feature:

Sealed silicone rubber keypad

APB/Polycarbonate impact resistance case
Rated IP 54 for splash & dust resistance
Built-in foldable meter stand for bench top operation
Meets CE requirements for electromagnetic compatibility
Bright, easy to read LCD
3-year meter warranty, 6-months for probes

Every Digi-Sense thermometer is individually factory calibrated on an

NIST-traceable calibrator. Most thermocouple thermometers have
0.02C (0.04F) conformity to NIST calibration tables.

Digi-Sense Thermocouple
Thermometers

DuaLogR Thermocouple Thermometer and Datalogger

Log up to 1000 sets of readings in real time
Transfer data to an infrared printer wirelessly or to a computer
via optional RS-232 adapter for permanent documentation
Takes differential temperature measurements
Meter accepts J, K, T, E, R, S, N or B thermocouple probes

The DuaLogR thermometer has real time datalogging with infra-red

and RS232 output capabilities. Meter accepts up to 2 thermocouple
inputs with type J, K, T, E, R, S, N or B thermocouples and displays
temperatures in F, C, R or K scales. Meter resolution (0.1 or 1)
auto-switches, or selectable resolution manually, improves readability
under rapidly changing temperature conditions.

Seamless data transfer can be performed using wireless infrared

output to a portable infrared printer or RS232 interface to a printer
or computer with an optional RS232 adapter.
This thermometer is factory calibrated on an NIST-traceable calibrator.
Thermocouple linearization has 0.02C (0.04F) conformance to
NIST thermocouple tables. Improve meter accuracy by calibrating
each probe for offset and slope. Calibration values can be manually
entered and stored for each thermocouple probe at any temperature.
Meter automatically stores and adjusts for inherent probe error for
best Meter + Probe system accuracy.
Ideal for laboratory, industrial, and field use. Order an optional power
adapter to conserve battery life during extended logging and printing
operations.

Measures minimum, maximum, and differential temperature readings

using one or two probes. Manually stores or automatically logs up to
1000 sets of readings real time with selectable logging interval from
1 second to 60 minutes.

Meter Specifications
Range

: -200 to 1000C (-328 to 1832F)

K : -250 to 1372C (-418 to 2501F)

T

: -250 to 400C (-418 to 752F)

: -250 to 1000C (-418 to 1832F)

: 0 to 1768C (32 to 3214F)

: 0 to 1768C (32 to 3214F)

N : -250 to 1300C (-418 to 2372F)

B

: 200 to 1800C (392 to 3272F)

Resolution

: 0.1 between -150 and 999.9C;

1 below -150 and above 999.9C

Accuracy

: Type J, K, T, E, and N
Below -150C (-238F): 0.25% of reading plus 1C (2F)
Above -150C (-238F): 0.1% of reading plus 0.4C (0.7F)
Type R, S, and B
0.1% of reading plus 1C (2F)

Display

: Multi-line 4 - digit custom LCD

Output

: Infra-red or RS232 (via interface adapter)

Power

: 2 x AA alkaline batteries (included), >600 hours continuous or

mains power adapter

Dimensions

: 84mm W x 158mm H x 30mm D

Weight

: 0.5 kg

Ordering Information
60010-50

DuaLogR Thermocouple Thermometer and Logger

91100-52

115VAC Power Adapter, 2-flat pin US type

91100-55

220VAC Power Adapter, 2-round pin European type

91100-85

RS232 Interface Adapter

Probe to be ordered separately. Refer to page 11 and 12 for selection.

Digi-Sense RTD Thermometers

RTD Thermometer
Automatic user
calibration for
improved meter
accuracy

Meter Specifications

Meter features selectable

C/F readout, auto-power
off, and HOLD function that
freezes measured display
for easy reading. It accepts
100 ohm 3-wire platinum
RTD sensors, and conforms
to ITS-90 temperature
scale.
Rugged
splashproof
housing makes meter ideal
for indoor and outdoor
uses.

Range

: -200 to 850 C (-328 to 1562 F)

Resolution

: 1C/F : From -200 to -100 C (-328 to -148 F)

0.1C/F : From -99.9 to 199.9 C (-148 to 392 F)
1C/F : From 200 to 850 C (392 to 1562 F)

Accuracy

: 2 C (4 F)
: From -200 to -100 C (-328 to -148 F)
0.2 C (0.4 F) : From -99.9 to 199.9 C (-148 to 392 F)
2 C (4 F)
: From 200 to 850 C (392 to 1562 F)

Alpha Coefficient

: 0.003850 //C

Display

: 33/4 - digit custom LCD

Power

: 2 x AA alkaline batteries (included), > 300 hours continuous

Dimensions

: 84mm W x 158mm H x 30mm D

Weight

: 0.5 kg

Ordering Information
60010-80

RTD Thermometer

EC-TEM6TEM01P

3-wire 100 RTD Temperature probe

Probe to be ordered separately. Refer to page 11 and 12 for selection.

ThermoLogR RTD Thermometer and Datalogger

Log up to 1000 sets of readings in
real time
Up to 0.01 resolution for improved
readability
Transfer data via infra-red or RS232
to a printer or computer
Simultaneous monitoring of current,
minimum, and maximum readings can
be viewed easily with the multi-line
display. Selectable log interval from 1
second to 60 minutes is possible with
data-logging function. Meter accepts
100 ohm 3-wire platinum RTD sensors
and conforms to ITS-90.
Meter features auto-power off, selectable
C/F mode, HOLD function, low battery
indicator, and automatic field calibration
for added convenience.

Meter Specifications
Range

: -201 to 1210C (-330 to 2210F)

Resolution

: 0.1C/F
0.01C/F
0.1C/F
1 C/F

Accuracy

: 0.1C/F

: From -330.0 to -100C/F

: From -99.99 to 99.99C/F
: From 100.0 to 999.9C/F
: Above 1000C/F
: From -330.0 to -100C/F

0.03C/F : From -99.9 to 99.9C/F

0.1C/F
: From 100.0 to 999.9C/F
1C/F
: Above 1000C/F
Alpha Coefficient

: 0.003850 //C or 0.003916 //C

Display

: Multi-line 4 - digit custom LCD

Output

: Infra-red or RS232 (via interface adapter)

Power

: 2 x AA alkaline batteries (included),

> 200 hours continuous or mains power adapter

Dimensions

: 76mm W x 152mm H x 25mm D

Weight

: 0.5 kg

Ordering Information
60010-85

ThermoLogR RTD Thermometer and Logger

EC-TEM6TEM01P

3-wire 100 RTD Temperature probe

91100-52

115VAC Power Adapter, 2-flat pin US type

91100-55

220VAC Power Adapter, 2-round pin European type

91100-85

RS232 Interface Adapter

Probe to be ordered separately. Refer to page 11 and 12 for selection.

Digi-Sense Thermistor
Thermometers
Meter Specifications

Thermistor Thermometer
Automatic calibration recognises
freezing point for improved meter
accuracy, minimises probe errors
This easy-to-use thermistor thermometer
features auto-power-off, selectable C/F
mode, low-battery indicator and HOLD
function; ideal for both laboratory and
field applications.
Accepts a large variety of YSI series 400
or series 500 thermistor probes with 6.35
mm phono plug.

Range

: -40.0 to 125.0C (-40.0 to 257.0F)

Resolution

: 0.1C/F

Accuracy

: 0.2C (0.4F)

Probes

: one YSI 400 or 500 series

probe with 0.635 mm phone plug
connector (not included)

Display

: 33/4-digit custom LCD

Power

: 2 x AA alkaline batteries (included),

> 200 hours of battery life

Dimensions

: 84mm W x 158mm H x 30mm D

Weight

: 0.5 kg

Ordering Information
60010-70

Thermistor Thermometer

Probe to be ordered separately

ThermoLogR Thermistor Thermometer

and Datalogger
Log up to 1000 readings in real time
Up to 0.01 resolution for improved readability
Transfer data to an infra-red printer wirelessly or to a computer via
optional RS-232 adapter for permanent documentation
Automatic field calibration recognises freezing point for improved
meter accuracy, minimises probe errors
With the large memory capability, datalogging of measured readings can
be performed in real time effortlessly. Download data via infra-red or RS232
(via interface adapter) to a printer or computer for report analysis. Meter
allows simultaneous monitoring of current, minimum and maximum readings.
Other features include auto-power off, selectable C/F mode, low-battery
indicator, and HOLD function. This meter accepts a large variety of YSI
series 400 or series 500 thermistor probes with 6.35 mm phono plug.

Meter Specifications
Range

: -40.0 to 150.0C (-40.0 to 302.0F)

Resolution

: 0.01 or 0.1 C/F; auto-ranging to 0.1 above +99.99

Accuracy

: 0.03C (0.06F)
0.1C (0.1F)
0.2C(0.4F)

Display

: Multi-line 4 - digit custom LCD

Output

: Infra-red or RS232 (via interface adapter)

60010-75

ThermoLogR Thermistor Thermometer and Datalogger

Power

: 2 x AA alkaline batteries (included), >300 hours continuous or

mains power adapter

91100-52

115VAC Power Adapter, 2-flat pin US type

91100-55

220VAC Power Adapter, 2-round pin European type

91100-85

RS232 Interface Adapter

: From 40 to 99.99C (-40 to 99.99F)

: From 100 to 125C (100 to 257F)
: From 125 to 150C (257 to 302F)

Dimensions : 84mm W x 158mm H x 30mm D

Weight

: 0.5 kg

Ordering Information

Probe to be ordered separately. Refer to page 11 and 12 for selection.

Digi-Sense Handheld
Humidity Datalogger

Temperature/Humidity Datalogger
Retain up to 1000 data sets complete with date and time
Measure and display relative humidity, temperature and dewpoint
simultaneously
Transfer data to an infrared printer wirelessly or to a computer
via optional RS-232 adapter for permanent documentation
0 to 100% RH range - Use in a variety of environments
External probe allows accessibity to hard-to-reach areas
This rugged portable datalogger is suitable for applications where relative
humidity measurement is critical, such as laboratories, storage areas,
and research facilities. It measures and displays all 3 parameters - relative
humidity (RH), temperature, and dew point simultaneously on its easy-toread LCD.
Datalogger features minimum/maximum readings, easy data transfer
via infra-red or RS232, HOLD function, and low battery indicator.
Calibration salts are available for field calibration (order separately).

Meter Specifications
Humidity Range
Resolution

: 0 to 100% RH
: 0.1% RH

Accuracy

: 2% from 10 to 90% RH; 4% outside this range

Temperature Range
Resolution

: -40 to 60C (-40 to 140F)

: 0.1C (0.1F)

Accuracy

: 0.5C (0.9F) or 0.2% of reading

Dew Point Range

: -50 to 60C (-58 to 140F)

Response Time

: 15 seconds

Display

: Multi-line 4-digit custom LCD

Output

: Infrared or RS232 (via interface adapter)

Power

: 2 x AA alkaline batteries (included), >200 hours continuous or

mains power adapter

Dimensions

: 76mm W x 152mm H x 25mm D

Weight

: 0.5 kg

Ordering Information
60020-52

Temperature/Humidity Datalogger with probe

60020-62

Replacement probe

37950-60

Calibration salt, 33% RH

37950-61

Calibration salt, 75% RH

91100-52

115VAC Power Adapter, 2-flat pin US type

91100-55

220VAC Power Adapter, 2-round pin European type

91100-85

RS232 Interface Adapter

Probe to be ordered separately. Refer to page 11 and 12 for selection.

Handheld Meters Feature:

Sealed silicone rubber keypad

APB/Polycarbonate impact resistance case
Rated IP 54 for splash & dust resistance
Built-in foldable meter stand for bench top operation
Meets CE requirements for electromagnetic compatibility
Bright, easy to read LCD
3-year meter warranty, 6-months for probes

Digi-Sense 12-Channel Scanning

Thermometers
Store and recall up to 4680 temperature data sets
with date and time.

Display or record temperature readings manually or

automatically

Accepts thermocouple probes with miniconnectors

Achieve accuracy of 0.1% of reading

are rated at 250 VAC 2A or 2A at 30 VDC resistive

When simultaneous monitoring of temperatures during different

process steps or phases is critical, these multi-channel scanning
thermometers are ideal. Wall-mount unit is ideal for permanent
installation and continuous monitoring of your processes. Benchtop
unit accepts most any power source giving you great flexibility as to
where and when it may be used. Both models function as a datalogger
store data in the non-volatile memory and later download to your
printer or PC. Link both models in series to expand the number of
channels you can scan. Each thermocouple input is individually
programmable to scan from every four seconds to 99 minutes, 59
seconds.

Easy-to-view drop proof housing

Instrument Features for Wall-Mount and Benchtop

With all wire connections at the bottom

Power unit with 100 240 VAC, 50/60 Hz supply

Bidirectional RS-232 for setup or PC datalogging - includes a

real-time clock, non-volatile memory, and parallel printer
output (benchtop only)
Immune to RF Interference
Wall-Mount Thermometer features:
Use high alarm and low alarm relays for On/Off control - relays

For quick and easy probe changes

Benchtop Thermometer features:

Parallel printer connection
Allows you to connect the thermometer to a printer make a hard
copy of your data as a permanent record

Power adapter unit included

115 VAC or 230 VAC or any 10 to 25 VDC or 7 to 20 VAC 500 mA
power supply. (user supplied)

Scan and log up to 12 thermocouple inputs from any combination

of J, K, T, E, N, B, R, and S thermocouple probes.
Thermocouple type is individually selectable per channel.
Datalogging feature automatically stores up to 4680 sets of
readings.
Download readings or stored data to your computer.

Link up to 8 units together to expand channel capacity to 96

channels (with supplied software).
Sequentially captures temperature data, allowing you to monitor
and record process variations ideal for statistical process control.
Easy-to-use front panel MENU key lets you program Datalogging
and print intervals, scan rate, date and time, temperature scale
(F, C, K, or R), resolution (0.1 or 1 C), channels displayed,
thermocouple type, and data output parameters.
Each channel features HOLD, STORE, MAX AND MIN (measures
maximum and minimum values), RECALL and AVERAGE buttons.
Calibrate each channel separately at either one or two points to
minimize probe offset. Parameter setup and calibration offsets
are stored in non-volatile memory.

Meter Specifications
Range

J
K
T
E
N
R
S
B

Resolution

:
:
:
:
:
:
:
:
:

Accuracy

Display
Display Update Rate
Scan Rate

:
:
:

Alarm Output (Wallmount model only)

Digital Output

:
:

Dimensions

Shipping Weight

Power

Physical Features for both models

Large 19 mm high, 14-segment, 12-character alphanumeric LCD

indicates channel number or name, temperature reading, and
temperature units.
Indicator warns you of open probes or out-of-range readings.
Benchtop models accept thermocouple probes with ANSI mini
connectors for quick hookup and changes.
Wall-mount models accept thermocouple probes with stripped
ends.

Multiple Safety Features for both models

MENU key lets you select high or low alarm set points for each
channel. Easily enable or disable built-in audible alarm and sets
alarm hysteresis; program for manual or automatic alarm reset.
Thermocouple inputs are electrically isolated from each other
and from data outputs provides safe and accurate measurements
even when probes are exposed to various electrical conditions.

Computer/Printer Capabilities for both models

Use printing function to send current readings directly to your

computer and printer at chose intervals.
Vary datalogging and printing intervals from 4 seconds to 99
minutes, 59 seconds.
Features RS-232 (for both units), and parallel printer output of
date and time (benchtop only), channel number and name, and
temperature readings in a tabular format.
Includes RS-232 cable. Parallel printer cable is not included (sold
separately).

- 200 to 1000 C (-392 to 1832 F)

- 250 to 1372 C (-418 to 2501 F)
- 250 to 400 C (-418 to 752 F)
- 250 to 1000 C (-418 to 1832 F)
- 250 to 1300 C (-418 to 2372 F)
0 to 1768 C (32 to 3214 F)
0 to 1768 C (32 to 3214 F)
200 to 1800 C (392 to 3272 F)
0.1 / 1selectable up to 999.9;
1 above 1000; auto-range to 1 below -150C
Type J, K, T, E, N :
Above -150 C : 0.5C (0.9F),
and 0.1% of reading
Below -150 C : 1C (1F),
and 0.25% of reading
Type R, S, B :
2C (4 F) 0.1 % of reading
12 - character alphanumeric LCD
3 seconds/channel
from 4 seconds / 12 channels,
10 seconds / 24 channels to
99 minutes, 59 seconds / 24 channels
SPDT high/low relays are rated at 250 VAC
2A or 2A at 30 VCD resistive
Both models : RS-232, ASCII format, baud rate
19.2 K, RJ11 connector
Benchtop unit only : Centronics parallel printer
output; DB25F connector
Benchtop :191 mm L x 267 mm W x 89 mm H
Wall-mount :140 mm L x 286 mm W x 216 mm H
Benchtop : 1.4 kg
Wall-mount : 1.8 kg
Benchtop :10 to 25 VDC, or 7 to
20 VAC 500 mA
Wall-mount :100 to 240 VAC, 50/60 Hz

Ordering Information
Cat no.

Description

Includes Power Supply

69200-00
69202-30
69210-00
69212-30

12-Channel
Benchtop
12-Channel
Wall-mount

115
230
115
230

VAC
VAC
VAC
VAC

50/60
50/60
50/60
50/60

Hz
Hz
Hz
Hz

Probe to be ordered separately. Refer to page 11 and 12 for selection.

10

Digi-Sense Temperature Controllers

Feature direct plug-in of heating devices
Advanced models include FREE software for remote computer
control of all system operations

Plain English menus

With two-line display simultaneously show measured value
and set point

Temperature scale
Selectable to read in C, F, K (Kelvin), and R (Rankine)

Multiple control modes

From simple on/off control to sophisticated auto-tuning
PID control

Non-volatile EEPROM memory

Stores set-up and operating parameters saves
parameters even during power loss

Separate fuses

Sensor-calibrate function

For instrument and output receptacle

Corrects for probe error

Easy to connect

Accepts up to 8 thermocouple types

Advanced models also accepts RTDs and YSI thermistor
probes in addition

115 VAC models include 2m power cord and U.S. standard plug; 230 VAC
models feature an IEC socket power connector for interchangeable cord sets
(specify country of destination when ordering).

Convenient output receptacle

Place on benchtop or mount with optional panel-mount kit

For direct plug-in of heaters and other devices (IEC on

230 VAC models)

Loop-break alarm
Shuts off output if a broken sensor or heater is detected

User selectable over-temperature and time

cutoffs
Audible/visible out-of-range alarms
Front-panel LEDs indicate output and alarm conditions

Advanced models include

Windows software, bidirectional RS-232, ramp/soak, alarm relay with adjusted
hysteresis, and isolated 4 to 20 mA recorder output.

Free Software (included with advanced models)

Control all parameters of your controller through a computer. Program set-up
files for later use software allows you to load, save, and print multiple set-up
files. Other software features include logging of measured temperature, setpoint temperature, and alarm status in real time; help menu; and the ability to
interface with other Windows- based programs.

Meter Specifications
Input type

Range

Resolution

J:

-190 to 1000C

(-310 to 1832F)

K:

-200 to 1372C

(-328 to 2502F)

T:

-200 to 400C

(-328 to 752F)

E:

-200 to 1000 C

(-328 to 1832F)

R:

0 to 1768C

(32 to 3214F)

S:

0 to 1768C

(32 to 3214F)

N:

-200 to 1300C

(-328 to 2372F)

B:

200 to 800C

(392 to 3272F)

400 series thermistor*

0 to 100C (32 to 212F)

700 series thermistor*

0 to 100C (32 to 212F)

100 Pt RTD *

-200 to 850C (-328 to 1562F)

Accuracy
Types J, K, T, E and N:

0.1;
1 above 999.9;
1 below -99.9

Above -100C (-248F) : 0.1% of reading, and

0.4C (0.7F)
Below -100C (-248F) : 0.1% of reading, and
1C (1.8F)
Types B, R, and S:
0.1% of reading, and 1C (1.8F)
Thermistors and RTDs*:
0.1% of reading, and 0.4C (0.7F)

* Advanced models only

Ordering Information
Controller Type

Control output

68900-01
68900-03

Code No.

Standard

1150 Watts
2300 Watts

68900-11
68900-13

Deluxe

1752 Watts
3450 Watts

Control Type (50/60 Hz)

On/Off,
Programmable PID,
Auto-tune PID

Probe to be ordered separately. Refer to page 11 and 12 for selection.

Ramp/Soak

Recorder Output

Power

Shipping Weight

No

None

115 VAC, 10 A max

230 VAC, 10 A max

3.2 kg

Yes; 9 programs
16 segments

4-20/20-4 mA,
selectable

115 VAC, 15 A max

230 VAC, 15 A max

4.1 kg

11
Temperature Probes
Thermocouple Type K Probes
Ordering Code

Dimension

Sensor Tip

2 mm

EC 3K220

Time
Constant

Class of
Precision

-60 to +600

-60 to +800

-60 to +800

-60 to +1100

6 mm -60 to +1100

5 mm -60 to +600

15

200 mm
Cable 1.5m

Temperature
C

liquid/air

3 mm

EC 3K320
200 mm
Cable 1.5m

3 mm

EC 3K350
500 mm
Cable 1.5m

6 mm

EC 3K6100
1000 mm
Cable 1.5m

EC 3K650
500 mm
Cable 1.5m

EC 3K520C
200 mm
Cable 1.5m

EC 3K1200

contact

-60 to +400

2000 mm

Thermocouple Type T Probes

EC 3T320

200 mm
Cable 1.5m

EC 3K415

3 mm -50 to +350

4 mm -50 to +350

-50 to +350

-50 to +350

-50 to +250

2.5 mm -50 to +300

contact

150 mm
Cable 1.5m

contact

2 mm

EC 3T215

150 mm
Cable 1.5m

contact

5 mm

EC 3T520C

200 mm
Cable 1.5m

contact

4 mm

EC 3T420A

200 mm
contact

Cable 1.5m

EC 3T210

100 mm
Cable 1.5m

12
RTD Pt 100 Probes
Model

Dimension

Sensor Tip

Temperature
C

Time
constant

Class of
Precision

-50 to +400

30

5 mm

-50 to +400

120

4 mm

-50 to +400

60

4 mm

-50 to +250

60

3 mm

-50 to +400

30

1/5 DIN

-100 to +350

30

-50 to +400

60

-50 to +400

60

3 mm

EC PT56L

200 mm
Cable 1.5m

Liquid/Air

EC PT56C

200 mm
Cable 1.5m

Contact

EC PT56P
500 mm
Cable 1.5m

Penetration

EC PT56A
1000 mm
Cable 1.5m

Air

EC PT56L 1/5DIN
500 mm
Cable 1.5m

4 mm

EC PT56 TFE

100 mm
Cable 1.5m

contact

6 mm

EC PT56/500

500 mm
Cable 1.5m

6 mm

EC PT56/1000

1000 mm
Cable 1.5m

Sensor

Temperature Range

Class

Tolerance

Themocouple
Type K

-60...+1200C

1.5C or 0.4% full scale

Type T

-40...+350C

0.5C or 0.4% full scale

Type J

-40...+750C

1.5C or 0.4% full scale

Pt 100

-100C
+0C
+100C
+200C

Class A

0.35C
0.15C
0.35C
0.55C

Pt 100

-100C
+0C
+100C
+200C

Class 1/5

0.16C
0.06C
0.16C
0.26C

Time Secs

Specification

/T
couple K
Thermo

% of final value

Temperature response per second, when immersed in liquid

13
Application Guide
Temperature Measurement
Temperature is the most commonly measured parameter. To obtain an
accuracy better than 0.2C (0.4F), extreme care is needed. Quite
often errors can occur due to presence of temperature gradients or
drafts, sensor non-linearities, poor thermal contact, calibration drifts,
radiant energy and sensor self-heating.

There are many types of sensors used to measure temperature. Choice

of sensor depends on accuracy, temperature range desired, access to
the point of interest, speed of response, environment (chemical, physical,
electrical) and cost effectiveness. The following table provides an
estimated comparison between common temperature sensor types.

Sensor Type

Output

Range C

Accuracy C

Robustness

Cost

Thermocouple
Platinum RTD
Nickel RTD
Thermistor
Semiconductor
Non-contact
Fiber Optic
Cryogenic
Bimetallic

40 V/C
0.4%/C
0.4%/C
5%/C
10 mV/C or 1 A/C
Millivolts
Various
Various
Hi/Low

-270 to 2300
-200 to 600
-200 to 600
-50 to 200
-40 to 125
0 to 6000+
-100 to 200
-273.15 to -200
-100 to 200

1.5
0.2
0.3
0.2
1.5
2
1
Various, to 0.001
2

High
Medium
Medium
High
Medium
Low
Medium
Various
High

Low
Medium
Low
Medium
Low
High
Very High
Various
Low

The above table provides a general summary and should not be taken as definitive statement on temperature sensors, especially on the accuracy.
Generally the accuracy of all sensor types can be greatly improved by calibration.

Temperature Sensors
Thermocouple sensors consist of a measuring junction formed by
two dissimiliar wires that complete an electrical circuit to the meter. A
millivolt signal is generated proportional to the temperature gradient
between the measuring and reference junctions. Thermocouples can
be used in a wide variety of applications and offer a broad measuring
range.
RTD sensors (resistance-temperature detector) use an element with

RTD

Thermistor

100

Platinum thin-film

400

Two-wire, single
ceramic element

500

Miniature two-wire,
single ceramic
element
Three-wire,
dual ceramic
element
+ / white / Iron
/ red / Constantan
+ / yellow / Chromel
/ red / Alumel

700

Thermocouple
(T/C)

J
K

+ / blue / Copper
/red / Constantan

+ / purple / Chromel
/ red /Constantan

+ / orange /
87% Platinum,
13% Rhodium
/ black / Platinum
+ / red /
87% Platinum,
13% Rhodium
/ red / Platinum
+ / red /
90% Platinum,
10% Rhodium
/ black / Platinum

charateristic resistance (commonly 100 ) that varies proportionally

with temperature. Three-wire probe reduces effect of lead-length
resistance on measurements giving a more precise indication of
temperature and providing the highest intrinsic accuracy.
Thermistor sensors are thermally sensitive semi-conductors that are
usually encapsulated in epoxy, glass or ceramic to prevent contact with
water. Thermistors operature on a principle similar to that of RTDs, but
thermistors exhibit a greater sensitivity in 0 to 100 C working range.

Features

Applications

Max. Range

Excellent accuracy, stability, wide

measuring range, maximum practical
distance is approximately 200 ft
Excellent accuracy, fast response,
and resistance to mechanical
shock; NIST traceable
Excellent accuracy, fast
response, and resistant to
mechanical shock; compact
Excellent accuracy, fast
response, resistant to mechanical
shock; NIST traceable
Wide temperature range

High accuracy; industrial

and laboratory use

0.1%
of reading

Ambient temperature and

biological applications

-200 to 849C
-330 to 1560F

Ambient temperature and

biological applications

-40 to 150C
-40 to 302F

Ambient temperature and

biological applications

-40 to 150C
-40 to 302F

Vacuum, reducing, or inert atmospheres; industrial and laboratory use

Oxidizing or neutral atmospheres
and higher temperatures;
industrial and laboratory use
Vacuum, reading, oxidizing, or
atmospheres and lower;
Industrial and laboratory use
Oxidizing inert or
corrosive atmospheres;
industrial and laboratory use
Resists oxidation and
corrosion, but contaminated by
hydrogen, carbon, and
metal vapors
Resists oxidation and
corrosion, but contaminated
by hydrogen, carbon, and
metal vapors
Resists oxidation and
corrosion, but contaminated
by hydrogen, carbon, and
metal vapors

0 to 1000C
-328 to 1832F
-250 to 1375C
-418 to 2507F

Widest temperature range

Good for sub-zero and

biological ranges;
moisture resistant
High emf output

High emf output

High emf output

High emf output

-250 to 400C
-418 to 752F
-250 to 1000C
-118 to 1832F
-250 to 1300C
-400 to 2372F

0 to 1450C
32 to 1450F

0 to 1450C
32 to 2642F

Selecting a Temperature Sensor

Selecting an appropriate sensor is not always easy. The following table serves only as a guide. You may have to adapt or change according to
the situation and your specific application:
Field

Traditional Sensor

Agriculture Research

Thermistor, Type T thermocouple, semiconductor

Automotive

Thermistor, Pt100

Chemical & Materials Processing

Pt100

Cryogenics

Metal Oxide resistor

Environmental Research

Thermistor, Type T thermocouple, Pt100, semiconductor

General Industry

Pt100

Hobby, Education

Semiconductor, Thermistor, Type T thermocouple

HVAC

Thermistor, Pt100

In Manufactured Goods

Semiconductor, Thermistor, Pt100

Metallurgy

Type K or Type N thermocouple

It is a good practice to first define the

accuracy and resolution required, sensor
interchangeability needs, the temperature
range, measuring equipment capability, cost,
possibility of performing calibration, media
compatibility and other environment issues
that may impact sensor reliability and life.

How to determine Your System Accuracy

Error vs Temperature
for a Typical Thermocouple System
8
System = Probe & Meter

6
Error C

To determine your system accuracy when you have a separate meter and probe, add the
tolerance of the meter to the tolerance of the probe. The diagram (on the right) shows the
accuracy versus temperature for a typical thermocouple meter and probe. For example,
using the diagram, the meter error at 250C is 0.5C and the probe error at 250C is
1.0C, thus the system accuracy would be 1.5C or better. The result is often
conservative the actual system accuracy is usually better. Glass thermometers, labels,
paints, bimetal thermometers, handheld infra-red thermometers, and digital indicators
include a general system accuracy statement.

Probe

Meter

1250

1000

750

500

250

Warranty

-250

Temperature C

Eutech Instruments warrants its handheld meters free from manufacturing defects for 3
years, scanning thermometers and temperature controllers for 1 year and probes for 6
months.

Note: We reserve the right to make changes, improvements and modifications to products shown.

www.digi-sense.com
marketing@eutechinst.com
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55, Ayer Rajah Crescent, #04-16/24, Singapore 139949.
Tel: (65) 6778 6876 Fax: (65) 6773 0836

GEN 08X233806 04/04 Rev 1

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