WIKA Differential Pressure Gauge (732.31, 733.31, 732.51, 733.51)

For the process industry, all-metal media chamber


  • For gaseous and liquid aggressive media that are not highly viscous or crystallising, also in aggressive environments
  • Pump monitoring and control
  • Filter monitoring
  • Level measurement on closed vessels

Product features

  • Differential pressure measuring ranges from 0 … 16 mbar to 0 … 40 bar or 0 …10 inH2O to 0 … 600 psi
  • High operating pressure (static pressure) up to 40 bar [600 psi]
  • High overload safety up to 40 bar [600 psi]
  • Models 732.31 and 733.31: Case with safety level “S3” per EN 837
  • All-welded media chamber

Sales Contact (Wika.sales@asyatrafo.com)




These differential pressure gauges are made of highly corrosion-resistant stainless steel and feature an all-metal media chamber to ensure long-term leak tightness (no elastomer sealing elements).

A high overload safety is achieved by the all-metal construction and the close-fitting design of the diaphragm measuring element.

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

The low-temperature version POLARgauge® allows operation with ambient temperatures down to -70 °C [-94 °F].

Cases with safety level “S3” are fitted with a non-splintering window, a solid baffle wall between measuring system and dial and a blow-out back. In the event of a failure, the operator is protected at the front side, as media or components can only be ejected via the back of the case.

Scale ranges of 0 … 16 mbar to 0 … 40 bar or 0 …10 inH2O to 0 … 600 psi ensure the measuring ranges required for a wide variety of applications.