Pressure Gauge Model 232.30


This high-quality Bourdon tube pressure gauge has been designed especially for increased safety requirements within the process industry

The use of high-quality stainless steel material and the robust design are geared to application in the chemical and process engineering industries. Thus the instrument is suitable for liquid and gaseous media, also in aggressive environments.

Scale ranges 0….0.6 to 0…1,600 bar the measuring ranges required for a wide variety of applications.

WIKA manufactures and qualifies the pressure gauge in accordance with the requirements of the EN 837-1

European Standard in the”S3″ safety version. The safety version is made up of a non-splintering window, a

solid baffle wall between measuring system and dial and a blow-out back. In the event of failure, the

operator is protected at the front side, as media or coponents can only be ejected via back of the case.

For harsh operating conditions, all instruments are also available with an optional liquid filling.



  • Increased safety requirements for personal protection
  • With liquid-filled case for application with high dynamic pressure loads or vibration (model 233.30)
  • For gaseous and liquis aggressive media that are not highly viscous or crystallising, also in aggrssive environments.
  • Oil and gas industry, chemical and petrochemical industries, power engineering and also water and wastewater technology.


  • Sfaety version with soli baffle wall designed in compliance with the requirements and test conditions of EN 837-1
  • Excellent load-cycle stability and shoc resistance
  • Completely from stainless steel
  • Scale ranges from 0…0.6 to 0…1,600 bar



EN 873-1

Nominal size in mm

63, 100, 160

Accuracy class

NS 63: 1.6

NS 100, 160 : 1.0

Scale Range

NS 63 : 0….1 to 0…1,000 bar

NS 100 : 0…0.6 to 0…1,000 bar

NS 160 : 0….0.0 to 0….1,6000 bar

or all other equivalent vacuum or combined pressure and vacuum ranges.

Pressure limitation

NS 63

Steady : 3/4 x full scale value

Fluctuating : 2/3 x full scale value

Short time : Ful scale value

NS 100, 160 :

Steady : Full scale value

Fluctuating : 0.9 x full scale value

Short time : 1.3 x full scale value

Permissible temperature

Ambient :

-40….+60°C without liquid filling

-20….60°C gauges with glycerine filling

Medium :

+200°C maximum with unfilled instruments

+100°C maximum with filled instruments

Temperature effect :

When the temperature of the measuring system deviates from the reference temperature (+20°C) : max. ±0.4%/10 K of full scale value.

Process Connection :

Stainless steel 316 (NS 63 : 1.4571)

Lower mount (LM) or lower back mount (LBM), NS 63 centre back mount (CBM)

NS 63  : G 1/4 B (male), SW 14

NS 100, 160 : G 1/2 B (male), SW 22

Pressure Element :

Stainless steel 316L

C-type or helical type

Movement :

Stainless steel



  • Other process connection
  • Sealings (model 910.17)
  • Assembly on diaphragm seals
  • Measuring system Monel
  • Panel Mounting flang, stainless steel or polished stainless steel
  • Surface mounting lugs on the back, stainless steel
  • Ambient temperature -40 °C : Silicone oil filling
  • Ingress protection IP66, IP67
  • Bourdon tube pressure gauge with switch contacts
  • Bourdon tube pressure gauge with electrical output signal

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