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TempC Membrane Solves Temperature Problem

TempC membrane

The new TempC membrane offers improved accuracy and process safety in challenging pressure and DP applications. It utilises a completely new technology to dramatically reduce the influence of process and ambient temperature fluctuations.

In applications with process temperatures from -40°C to 250°C, it offers a very short recovery time after temperature shock, for example at the end of a CIP/SIP cleaning cycle, when compared to conventional diaphragm seals.

Better than conventional membranes

Pressure and differential pressure transmitters are employed across all industries for many different applications such as process pressure measurement, hydrostatic level, differential pressure and even flow measurement, across filters, packing, heat exchangers and many others. Sometimes the application determines that the instrument requires a diaphragm seal design, typically due to extremes of process temperatures, corrosive media, plant vibration, viscous media or hygienic requirements.

Whilst diaphragm seals are very useful in solving some challenging applications they can suffer from poor performance due to changes in both process and ambient temperature. Changes in temperature will cause the oil fill in the system to expand or contract. Conventional membranes can have a high degree of stiffness so the oil expansion or contraction has little effect on the membrane but instead acts upon the measuring cell thus causing errors in measurement.

Reducing measurement errors by up to 90%!

With this in mind, the innovative new TempC (temperature compensatory) membrane has been designed to be much more flexible, thus absorbing any oil expansion or contraction. This can typically reduce these measurement errors by up to 90%, therefore providing much improved measurement stability, reliability and potentially greater process safety.


  • Available for the Cerabar PMP55 and PMP75 and Deltabar FMD78 pressure transmitters.
  • Covers our range of hygienic process connections for the food & beverage and life sciences industries.
  • Laser welded in place ensuring a very smooth finish and making it very easy to clean.
  • Compliments the existing range of pressure measuring cell technologies available: the Ceraphire ceramic cell, condensation-tight CONTITE cell, metallic measuring cell and the electronic DP solution.

[email protected]
0161 286 50501

Endress+Hauser Ltd

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