Pressure Sensors

Pressure sensors are devices that sense the applied pressure of gases or liquids. The output of the measurement is then converted into an electrical signal which reflects the amount of pressure applied.

There are various technologies used within pressure sensors. Depending on the requirements, this can influence their sensing accuracy and reliability. When the mechanical displacement within the sensor is turned into an electrical output signal there are 5 ways this can happen.


Resistive - These types of sensors use the change in electrical resistance of a strain gauge connected to the diaphragm.

Capacitive - Are highly sensitive and are able to measure low pressure under 10 bar while still withstanding large overloads.

Piezoelectric - These sensors use substances like Quartz to generate a charge on the surface when pressure is applied. Piezoelectric pressure sensors are ideal for measuring fast changing pressures.

Optical - These use interferometry to measure pressure changes in optical fibre. They are not disturbed by EMI and can be used in noisy or medical environments.


MEMS - This stands for micro-electro-mechanical system and contains capacitive or piezo pressure sensing mechanisms on silicon at micron level resolution.

Types of Pressure Sensors

Within the sensors, there are various properties which can be used to classify them. This includes what pressure range they measure, their operating temperature range or the pressure type they measure.

Absolute Pressure Sensor - This type of sensor measures pressure relative to the perfect vacuum (zero reference point).

Gauge Pressure Sensors - These are often used to measure atmospheric pressure and are sometimes referred to as relative pressure sensors.

Sealed Gauge Pressure Sensor - Like a gauge pressure sensor except they measure pressure relative to a fixed pressure, not the current ambient atmospheric pressure which can vary.

Differential Pressure Sensors - These can be used to measure the difference between two different pressures (differential pressure) which can be connected to either side of the sensor. They are often used to measure pressure drops, fluid levels and flow rates.

Pressure Sensor Applications

Pressure sensors are used in many applications in a large range of industries. These include medical, aviation, automotive and marine.


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Description Price Pressure Reading Type Minimum Pressure Reading Maximum Pressure Reading Accuracy Output Type Media Measured Calibrated Process Connection Analogue Output Electrical Connection Communication Protocol Response Time Maximum Current Series
RS Stock No. 313-5351
Mfr. Part No.14X1HA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 25bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5301
Mfr. Part No.14X1SA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 0.1bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5317
Mfr. Part No.14X1AA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 1bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5345
Mfr. Part No.14X1FA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 10bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5339
Mfr. Part No.14X1EA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 6bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5389
Mfr. Part No.14X1JA1GV1
BrandVega
£169.00
Each
Units
Relative 0bar 60bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5373
Mfr. Part No.14X1IA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 40bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 313-5323
Mfr. Part No.14X1CA1GV1
BrandVega
£191.60
Each
Units
Relative 0bar 2.5bar 0.3 % - Fluid, Gas, Vapour - G1/2 4 → 20 mA DIN 43650 Type A - - - Vegabar 14
RS Stock No. 206-7026
Mfr. Part No.PP - 222 2H2
BrandVega
£259.00
Each
Units
Gauge, Relative -1bar 10bar 0.3 % Digital Gas, Liquid - G1/2 IO Link M12 IO-LINK - - VEGABAR 28
RS Stock No. 206-7043
Mfr. Part No.PP - 222 2BM
BrandVega
£337.00
Each
Units
Gauge, Relative -1bar 10bar 0.3 % Digital Gas, Liquid - - - M12 IO-LINK - - VEGABAR 38
RS Stock No. 206-7028
Mfr. Part No.PP - 222 2GV
BrandVega
£229.00
Each
Units
Gauge, Relative -1bar 10bar 0.3 % Analogue Gas, Liquid - G1/2 4-20mA M12 IO-LINK - - VEGABAR 28
RS Stock No. 206-7038
Mfr. Part No.PP - 222 AUQ
BrandVega
£289.00
Each
Units
Gauge, Relative -1bar 25bar 0.3 % Digital Gas, Liquid - - - M12 IO-LINK - - VEGABAR 29
RS Stock No. 206-7023
Mfr. Part No.PP - 222 4D9
BrandVega
£161.00
Each
Units
Gauge, Relative -1bar 100bar 0.5 % Analogue Gas, Liquid - G1/2 4-20mA M12 - - - VEGABAR 19
RS Stock No. 206-7044
Mfr. Part No.PP - 222 3A4
BrandVega
£337.00
Each
Units
Gauge, Relative -1bar 25bar 0.3 % Digital Gas, Liquid - G1/4 - M12 IO-LINK - - VEGABAR 38
RS Stock No. 206-7029
Mfr. Part No.PP - 222 4NP
BrandVega
£259.00
Each
Units
Gauge, Relative -1bar 25bar 0.3 % Digital Gas, Liquid - G1/2 IO Link M12 IO-LINK - - VEGABAR 28
RS Stock No. 206-7039
Mfr. Part No.PP - 222 3AE
BrandVega
£259.00
Each
Units
Gauge, Relative -1bar 25bar 0.3 % Analogue Gas, Liquid - - 4 → 20 mA M12 IO-LINK - - VEGABAR 29
RS Stock No. 206-7024
Mfr. Part No.PP - 222 2MZ
BrandVega
£259.00
Each
Units
Gauge, Relative -1bar 1bar 0.3 % Digital Gas, Liquid - G1/2 IO Link M12 IO-LINK - - VEGABAR 28
RS Stock No. 206-7047
Mfr. Part No.PP - 222 65D
BrandVega
£313.00
Each
Units
Gauge, Relative -1bar 10bar 0.3 % Digital Gas, Liquid - - - M12 IO-LINK - - VEGABAR 39
RS Stock No. 206-7045
Mfr. Part No.PP - 222 BH2
BrandVega
£262.00
Each
Units
Gauge, Relative -1bar 100bar 0.3 % Digital Gas, Liquid - - - M12 IO-LINK - - VEGABAR 39
RS Stock No. 206-7030
Mfr. Part No.PP - 222 2MD
BrandVega
£229.00
Each
Units
Gauge, Relative -1bar 25bar 0.3 % Analogue Gas, Liquid - G1/2 4-20mA M12 IO-LINK - - VEGABAR 28