R

WP4
All SS (SS 304) Pressure Gauge
Bourdon type

Special Features
< External zero adjustment (optional)
< Stainless steel case & measuring system
< Socket directly welded to case
< Dry and liquid filled version
< Standard followed EN 837-1 (for NS 100, 150 & 250 mm)
< CE marking (as per PED 97/23/EC) (for NS 100 mm & 150 mm)

Application
< Cryogenics
< Pumps
< Diesel engines & Refrigerating plants
< Chemical & Petrochemical industries
< Conventional & nuclear power plants
Standard Version < Environments & gaseous or liquid media that will not obstruct the
pressure system.
< Hydro-cleaning machines
< Presses
< Engine compressors
IBR < Turbines
With External
Zero Adjustment
CE IBR
Specifications
Standard Version : 100 mm (4") , 115 mm (4.5"), 150 mm (6") , 200 mm (8") & 250 mm (10")
Accuracy : ±1.0% of F. S.
Ambient temperature : - 25°C to + 65°C
Process temperature : Max 300°C
Operating pressure range : 75% of Scale Value
Over pressure limit : < 100 bar : 125% of Max. Scale Value
: > 100 to < 600 bar : 115% of Max. Scale Value
: > 600 to < 1600 bar : 110% of Max. Scale Value

Case & Bezel : AISI 304 SS (Bayonet Type)

Bourdon : AISI 316L SS
Socket : AISI 304 SS (Directly Welded to Case)
Movement : AISI 304 SS
Joints : Tig Argon Arc Welding

Protection : IP 68
Dial : Aluminium, black graduation on white background
Pointer : Aluminium, black coloured Micrometer zero adjustable / W/o. Zero Adjustment Pointer for Option LGF
Window : Toughened Glass
Blow off Disc : Neoprene
Gasket & Filling Plug : Neoprene
Dry But Fillable Version (Option DFG) Glycerine Filled Version (Option LGF)
Fillable Dampening Liquid : Glycerine 99.7% (Option - DFG) Accuracy : ±1.0% of F.S.
Ambient Temperature : Maximum 65°C Ambient Temperature : Maximum 65°C
Process Temperature : Maximum 100°C Process Temperature : Maximum 100°C
Window : Toughened Glass Window : Toughened Glass
Other Features : Refer Specification of Dampening Liquids : Glycerine 99.7% (others available as option)
Standard Version Other Features : Refer Specification of Standard Version
Temperature effect:
The variation of indication caused by effects of temperature is to be calculated by below formula; which is to be added in the specified accuracy
while measurement :- Formula : ± 0.04 x (t2 - t1) % of F. S. where t1 = reference temperature (+20°C) and t2 = ambient temperature in °C.

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 R

WP4
All SS (SS 304) Pressure Gauge
Bourdon type
Ensuring Accuracy and Performance

Dimensions - Standard Version

TYPE 1 TYPE 2

ØU B
ØN
A
B S
A

120°

ØC ØD
M
ØC ØD

ØI E

Weight in gram Weight in gram Weight in gram Weight in gram

NS A B ØC ØD E M S ØI ØN ØU NS A B ØC ØD E
(With Box) (With Glycerin & Box) (With Box) (With Glycerin & Box)

100 12.5 45 111 100 22 128 5 6 134 118 720.0 1025.0 100 12.5 48 111 100 22 640.0 935.0
125 15 46 129 119 22 143 5 6 150 137 845.0 1165.0 125 15 48 129 119 22 750.0 1070.0
150 15 47 161 149 22 174.5 5 6 186 168 1160.0 1895.0 150 15 49 161 149 22 1020.0 1755.0
200 18 49 216 200 22 229 1.5 7 245 230 2020.0 2780.0 200 18 49 216 200 22 1720.0 2480.0
250 18 55 262 247 22 286.5 1.5 7 290 276 2400.0 3220.0 250 18 55 263 248 22 2000.0 2820.0

TYPE 3 TYPE 4
B
A
B
A

ØC ØD

ØC ØD

E
E

Weight in gram Weight in gram Weight in gram Weight in gram

NS A B ØC ØD E NS A B ØC ØD E
(With Box) (With Glycerin & Box) (With Box) (With Glycerin & Box)

100 12.5 47 111 100 22 640.0 935.0 100 12.5 47 111 100 22 640.0 935.0
125 15 48 129 119 22 750.0 1070.0
Note : For Type 4 Back Side Blow Out Disc is Not Available
150 15 49 161 149 22 1000.0 1735.0
200 18 49 216 200 22 1500.0 2260.0
250 18 52 263 248 22 1800.0 2620.0

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www.excelinstruments.com Page 2 / 5
 R

WP4
All SS (SS 304) Pressure Gauge
Bourdon type
Ensuring Accuracy and Performance

Dimensions - standard version

TYPE 5 TYPE 11

B
ØU B ØN ØU
ØN
A A

120°
120°

ØC ØD
ØC ØD

ØI

ØI
S E

S
E
Weight in gram Weight in gram
NS A B ØC ØD E S ØI ØN ØU
(With Box) (With Glycerin & Box)
100 12.5 48 111 100 22 1 6 134 118 695.0 990.0
Weight in gram Weight in gram
NS A B ØC ØD E S ØI ØN ØU
125 15 48 129 119 22 1 6 150 137 850.0 1170.0 (With Box) (With Glycerin & Box)

150 15 49 161 149 22 1 6 186 168 1100.0 1835.0 100 12.5 48 111 100 22 1 6 134 118 730.0 1025.0
200 18 49 216 200 22 1.5 7 245 230 2000.0 2760.0 125 15 48 129 119 22 4 6 150 137 815.0 1135.0
250 18 52 263 248 22 1.5 7 290 276 2250.0 3070.0 150 15 49 161 149 22 5 6 186 168 1100.0 1835.0

TYPE 9 B
A

K
ØC ØD

E V

Weight in gram Weight in gram

NS A B ØC ØD E J K V
(With Box) (With Glycerin & Box)

100 12.5 48 111 100 22 62 16 108 740.0 1035.0

125 15 48 129 119 22 65 16 125 890.0 1210.0

150 15 49 161 149 22 100 16 166 1100.0 1835.0

200 18 49 216 200 22 165 16 208 1920.0 2680.0

250 18 52 263 248 22 180 30 270 2300.0 3120.0

Notes : • Drawings are not to scale. • All Dimensions are in mm . • NS = Nominal size
• Weights mentioned are approximate and for standard product. Weight can be different after selection of options.

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 R

WP4
All SS (SS 304) Pressure Gauge
Bourdon type
Ensuring Accuracy and Performance

Range Table

Note : We offer National / International Scales like kPa, MPa, bar, psi, kg/cm2 & Dual Scale like kPa with psi, kPa with bar, bar with psi or
2
Equivalent scales as per the requirement can be provided on request. Following are the example tables for kg/cm & psi scales.
Pressure
Single Scale (kg/cm² or bar)
0/0.6 0/4 0/25 0/160 0/1000
0/1 0/6 0/40 0/250 0/1600
0/1.6 0/10 0/60 0/400
0/2.5 0/16 0/100 0/600
Dual Scale (psi with kg/cm²)
psi kg/cm² psi kg/cm² psi kg/cm²
0/15 0/1 0/400 0/28 0/4000 0/280
0/30 0/2 0/500 0/35 0/5000 0/350
0/60 0/4 0/600 0/40 0/6000 0/420
0/100 0/7 0/1000 0/70 0/10000 0/700
0/150 0/10 0/1500 0/100 0/15000 0/1000
0/230 0/16 0/2300 0/160 0/23000 0/1600
0/300 0/20 0/3000 0/200
Vacuum & Compound
Dual Scale (inHg with psi & mmHg with kg/cm²)
inHg with psi mmHg with kg/cm² inHg with psi mmHg with kg/cm² inHg with psi mmHg with kg/cm²
- 30/0 - 760/0 - 30/60 - 760/4 - 30/200 - 760/14
- 30/15 - 760/1 - 30/100 - 760/7 - 30/300 - 760/21
- 30/30 - 760/2 - 30/150 - 760/10 - 30/350 - 760/25
Single Scale (kg/cm²)
- 1/0 - 1/1.5 - 1/5 - 1/15
- 1/0.6 - 1/3 - 1/9 - 1/24
Receiver
Linear scale Square root scale
(0 - 100% Internal Scale) ( 0 - 10 Sq - Root Internal Scale )
External Scale External Scale
0.2 - 1 kg/cm² or 3 - 15 psi 0.2 - 1 kg/cm² or 3 - 15 psi
(0-100% linear scale) (0.2 - 1 kg/cm²)
Freon (with temperature scale) Ammonia (with temperature scale)
Note : For temperature scales, please provide refrigerant name.
Range (psi) ( kg/cm² ) ( psi )
-30 inHg - 150 0-300 -1to12.5 -30 inHg - 150
-30 inHg - 300 0-500 -1to16 -30 inHg - 300
-1to25 0 - 300
Accessories (refer datasheet for complete specifications)
CT Cooling tower GS Over load protector (gauge saver)** SN Snubber
GC Gauge cock * Needle valve SP Siphon
* Refer catalogue for Valves & Manifolds. ** For Pressure Ranges.
Note : For Any Non Standard or Special Scale Marking Consult Factory

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www.excelinstruments.com
 R

WP4
All SS (SS 304) Pressure Gauge
Bourdon type
Ensuring Accuracy and Performance

How To Order Example

Basic Model WP4

Code
Nominal Size 40 45 60 80 100
XX
100 mm 115 mm 150 mm 200 mm 250 mm or
Type of Mounting XXX
1 Wall / surface / projection mounting with bottom entry
2 Direct bottom entry
3 Direct lower back entry
4 Direct center back entry (for NS 100 mm only) X
OR
5 Lower back entry with front flange
XX
6 2” pipe / yoke mounting with bottom entry*
7 Direct bottom entry with mounting bracket
9 Lower back entry with mounting bracket
11 Bottom entry with front flange (for NS 100 mm, 125 mm & 150 mm)
12 Center back entry with front flange
15 Lower back entry With front flange & Bracket

* MOC of bracket and ‘U’ clamp will be steel (painted). Ask factory for drawings, if required.
Gauge Connection Nominal Size > 40 45 60 80 100
2BM ¼" BSP (M) U U U V V
2NM ¼" NPT (M) U U U V V
2TM ¼" BSPT (M) U U U V V
3BM 3/8" BSP (M) U* U U U U
U U U U U
3TM 3/8" BSPT (M) XXX
U U U U U
4BM ½" BSP (M) Standard
U U U U U
4NM ½” NPT (M) Standard U U U U U
4TM ½" BSPT (M) U U U U U
4MM M20x 1.5 (M) U U U U U
3NM 3/8” NPT (M) U U U U U

* Standard for NS 100 mm.

Note : Connections like Metric / UNF etc. can be provided on request.
Range 0/10
2
Refer range table kg/cm
Optional Extras
AC5 Accuracy ± 0.5% of F. S. (for dry version) MTC Material test certificates*** IVS Internal vacuum stop
LGF Dampening liquid glycerine filled VPO ON - OFF type vent plug REC Receiver range
LSI Dampening liquid silicon oil filled* IBR IBR approval # FRE Freon range (with temperature scale)
PLG Plexi glass EZA External zero adjustment AMO Ammonia range (with temperature scale) XXX
STG Shatterproof/safety glass STP SS tag plate DFG Dry But Fillable Version ( Glycerin )
MDJ Movement with dampening jelly TND Tag No. marking on Dial DFS Dry But Fillable Version ( Silicon )
KEP Knife edge pointer HLT Helium leak test CDD Custom designed dial
MRP Maximum reading pointer with plexi glass TRC Calibration certificate traceable to IOS Internal over pressure stop
(except option AC5 & for dry version) S National/International standards OXS Oxygen service (for dry version)

***Material test certificates will be provided for wetted parts only with chemical composition testing. For others, please consult factory.
# For NS 150 mm & above. Scale shall be marked in kg/cm² or bar. single Scale Only Consult factory for any Other scale requirement.
S For NS 100 mm to 150 mm.

Ordering Example: WP4 - XX or XXX - X or XX - XXX - 0/10 kg/cm² - XXX

For other optional items, please contact factory for delivery and minimum order quantity.

Note : Specifications and dimensions given in this product catalogue represents the state of engineering at the time of printing.
Modifications may take place and materials specified may be replaced by others without prior notice.

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