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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Omschrijving Prijs 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 Supply Voltage
RS-stocknr. 324-0964
FabrikantnummerXMLA160D2S11
172,00 €
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Differential 10bar 160bar 2 % Relay Hydraulic Fluid - G1/4 - PG13.5 Cable Gland - - 3 A ac, 100 mA dc 120 → 240 V ac, 250 V dc
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Relative 0bar 10bar ±0.25 % Current Air, Gas, Hydraulic Fluid, Liquid, Water - G1/4 4 → 20 mA DIN 43650 Type C - - 20 mA 9 → 32 V dc
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FabrikantGems Sensors
198,30 €
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Differential -500Pa 500Pa ±1 % Analogue Air, Non-Conductive Gas - - 0 → 10 V Terminal Strip - 1 s - 24 V ac/dc
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FabrikantNXP
12,24 €
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Differential 0bar 200kPa ±1 % Voltage Air - - 38.5 → 41.5 mV PCB Mount - 1 ms 6 mA 16 V dc
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FabrikantHoneywell
489,95 €
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Differential -5in wg 5in wg ±2 % Amplified Gas - - 1.2 V Solder Tag - 1 ms - 8 V dc
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Fabrikantnummer2SMPP-03
FabrikantOmron
5,715 €
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Relative -50kPa 50kPa - Amplified Air - - - PCB - - 200 μA -
RS-stocknr. 169-0724
FabrikantnummerMPXV2202DPT1
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7,341 €
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Differential 0bar 200kPa ±1 % Voltage Air - - 38.5 → 41.5 mV PCB Mount - 1 ms 6 mA 16 V dc
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Fabrikantifm electronic
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Relative 0bar 10bar ±0.5 % Analogue Gas, Liquid - G1/4 4 → 20 mA M12 Connector - 1 ms - 8.5 → 36 V dc
RS-stocknr. 169-7639
Fabrikantnummer163PC01D36
FabrikantHoneywell
14.599,57 €
1 Box of 30
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Differential -5in wg 5in wg ±2 % Amplified Gas - - 1.2 V Solder Tag - 1 ms - 8 V dc
RS-stocknr. 788-4921
Fabrikantnummer2SMPP-02
FabrikantOmron
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Relative 0bar 37kPa - Amplified Air - - - PCB - - 130 μA -
RS-stocknr. 169-8085
FabrikantnummerADP42510
FabrikantPanasonic
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Relative - - ±0.3 % Voltage Air, Fluid - - 100±40 mV PCB - - 1.5 mA -
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285,20 €
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Relative 0bar 50mbar <±0.25 % Current Oil, Water - G1/4 4 → 20 mA DIN 43650 Type A - - 28 mA 9 → 32 V dc
RS-stocknr. 835-3917
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Relative 0bar 400bar ±0.5 % Analogue Gas, Liquid - G1/4 0 → 10 V M12 Connector - 1 ms - 16 → 36 V dc
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48,50 €
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Differential 0.3 (Falling) bar, 1.3 (Rising) bar 10.3 (Falling) bar, 12 (Rising) bar <3.5 (Repeat) % 2NC Air, Fresh Water, Sea Water - G1/4 - Screw Clamp - - - -
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658,10 €
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Fabrikantnummer9012ADW7S1M12
661,41 €
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Differential 38bar 340bar - - Fluid, Oil - G3/8 - PG13.5 Cable Gland - - 3 A dc, 5 A ac 120 → 240 V dc, 120 → 600 V ac