Models 432.56, 432.36

Diaphragm pressure gauge with switch contacts

High overload safety up to 100/400 bar

Selected documents
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  • Control and regulation of industrial processes at measuring points with increased overload and scale ranges from 0 ... 25 mbar
  • Monitoring of plants and switching of circuits
  • For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive environments
  • Process industry: Chemical, petrochemical, power plants, mining, on-/offshore, environmental technology, machine building and general plant construction

Special Features

  • High overload safety, optionally up to 40, 100 or 400 bar, due to the metallic pressure element limit stop, without liquid-filled measuring cell
  • Wide choice of special materials
  • Also available with liquid-filled case for high dynamic pressure loads or vibrations
  • Instruments with inductive contacts for use in hazardous areas with ATEX approval
  • Instruments with electronic contact for PLC applications


Wherever the process pressure has to be indicated locally and, at the same time, circuits need to be switched, the model 432.56 or 432.36 switchGAUGE finds its use.

Switch contacts (electrical alarm contacts) close or open circuits dependent upon the pointer position of indicating measuring instruments. The switch contacts are adjustable over the full extent of the scale range (see DIN 16085), and are mounted predominantly below the dial, though also partly on top of the dial. The instrument pointer (actual value pointer) moves freely across the entire scale range, independent of the setting. The set pointer can be adjusted using a removable adjustment key in the window.

Switch contacts consisting of several contacts can also be set to a single set point. Contact actuation is made when the actual value pointer travels beyond or below the desired set point.

The pressure gauge is manufactured in accordance with DIN 16085 and fulfils all requirements of the relevant standards (EN 837-3) and regulations for the on-site display of the working pressure of pressure vessels. As switch contacts magnetic snap-action contacts, reed switches, inductive contacts - for requirements to ATEX - or electronic contacts for triggering a PLC are available. For further information on the different switch contacts please see data sheet AC 08.01.

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