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.

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.

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.

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.

Want more information on pressure sensors? In that case, check out these links for more info:

Other resources that might interest you

Which is the best level measurement principle – radar or pressure?
What’s the best level principle? And is a radar better for level measurement compared to a pressure transmitter?

Pressure transmitter with a capillary or electronic remote sensor?
Are there differences between a pressure transmitter with capillary versus remote electronic sensors?

Volume measurement from pressure transmitter
Can I receive data on the tank volume if I have a pressure device that’s installed for level measurement?

Product Review: SITRANS P500 DP Transmitter
Want an unbiased review of SITRANS P500? Then, this is for you.

Have more questions about pressure sensor types? Give us a call.

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