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Pressure

Fields of application for pressure sensors 3 – Absolute pressure sensors: why is it necessary to use absolute pressure sensors or pressure transmitters

Stefan Heusel
Image: relative absolute pressure - WIKA

Electronic pressure sensors usually measure the change in pressure through the deformation of a diaphragm. If this diaphragm is exposed to the process pressure on one side and "vented" on the other side (and thus exposed to the ambient pressure), the deformation is …

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Fields of application for pressure sensors 2 – non-vented gauge pressure sensors: when unvented pressure sensors or transmitters are the best choice

Stefan Heusel
Image: relative absolute pressure - WIKA

In most applications, gauge pressure measurement is required and therefore pressure sensors and pressure transmitters  that measure pressure against the prevailing ambient pressure are commonly used for this. Those pressure sensors typically have a venting hole to …

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Fields of application for pressure sensors 1 – vented gauge pressure sensors vs. absolute pressure sensors

Stefan Heusel
Image: relative absolute pressure - WIKA

The user is often faced with the question: What kind of pressure sensor should I use - a relative/gauge or an absolute pressure sensor? From food processing to petrochemical plants, to plastic injection moulding and many other industrial applications, pressure …

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Marking of pressure sensors and transmitters according to ATEX Guideline 94/9/EC – how to read the ATEX label on pressure sensors

Stefan Heusel
pressure sensor ATEX

If pressure sensors, pressure transmitters and other field equipment are used in the vicinity of flammable gases or dust, they may be subject to marking in accordance with the ATEX product guideline 94/9/EC. ATEX requires the type label of the sensor to include the …

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Electrical circuit for pressure sensors: when is a sensor active, and when passive?

Stefan Heusel
Circuit diagram of an active and a passive pressure sensor

When using pressure sensors, the output signals 0 … 20 mA, 4 … 20 mA and DC 0 … 10 V are frequently chosen in order for the sensor signals to be evaluated and further processed. For this, the signal output of the pressure sensor is usually connected to a …

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Welcome to the WIKA blog

In our English-language blog you can expect many interesting articles on pressure, temperature, level, force and flow measurement, and also on the subject of calibration technology. Furthermore, there are various insights into the world of the WIKA group of companies – seen from different angles.

Most-read articles
  • What is the functional principle of a resistive pressure transmitter?

  • Filling liquids in pressure gauges: Usage and advantages

  • How do diaphragm seals work?

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