A pressure sensor translates pressure data into an electrical current. Then a data analyzer reads that current for your system. So let’s talk about the four pressure sensor types you need to know.

The 4 main pressure sensor types

Ceramic cell pressure sensor

First of all, we have the ceramic cell pressure sensor. It has a conductive surface that charges a capacitor. When a force applies pressure, the charge increases or decreases. And that depends on the pressure applied. Closed cells measure absolute pressure, and open cells measure gauge pressure.

Ceraphant PTC31B Absolute and gauge pressure switch with oil-free ceramic sensor for measurement in gases or liquids
in the shop from 284€

Pressure sensor with strain gauge

In addition, you can use pressure sensors with strain gauges. They measure hydrostatic pressure in tanks using a Wheatstone bridge. That means that under pressure, the strain gauge deforms. This, again, produces a change in resistance.

Deltabar S PMD75

Differential pressure transmitter with metal sensor for continuous measurement

in the shop from 1390€

Pressure sensor with metallic diaphragm

We also have pressure sensors with metallic diaphragms. They use semiconductors to sense changes in resistance according to the change in pressure in the sampling chamber.

Ceraphant PTP33B

Pressure switch for absolute and gauge pressure in hygienic applications

in the shop from 293€

Silicon resonant pressure sensor

Finally, Yokogawa’s silicon resonant pressure sensors use micro-electro-mechanical systems (MEMS) technology. Here, two resonators pick up frequency shifts when tension or compression occurs. Then, this sensor connects to the sampling chamber of the transmitter.

Also, different connections and primary elements link the process medium and the actual sensors. Coplanar™ transmitters by Emerson can connect to several types of manifolds. Plus, it can connect to valves without changing the setup.

To know more about pressure sensors, please ask our engineers!

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