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. 374-8761
Fabrikantnummer787260
FabrikantBurkert
25,13 €
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Differential 1bar 10bar - Relay Air, Hydraulic Fluid, Oil Emulsion, Water - G1/8 - Spade Terminal - - 2 A 42 V
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FabrikantHoneywell
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Differential 0psi 100psi ±1 % Wheatstone Bridge Pneumatic Fluid - - 0 → 100 mV Solder Tag - 100 μs - 20 V dc
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FabrikantnummerSCX100DN
FabrikantHoneywell
164,97 €
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Differential 0psi 100psi ±0.1 % Unamplified Pneumatic Fluid - - 99 → 101 mV Solder Tag - 100 ms - 20 V dc
RS-stocknr. 181-1362
Fabrikantnummer24PCCFA2G
FabrikantHoneywell
30,13 €
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Relative 0psi 15psi 0.2 % Wheatstone Bridge Nitrogen Gas, Oxygen, Water - - 0 → 225 mV Solder Tag - 1 ms - 2.5 → 12 V dc
RS-stocknr. 535-1218
Fabrikantnummer5266100LBACTI
FabrikantGems Sensors
198,30 €
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Differential -100Pa 100Pa ±1 % Analogue Air, Non-Conductive Gas - - 0 → 10 V Terminal Strip - 1 s - 24 V ac/dc
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49,85 €
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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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FabrikantRS PRO
341,25 €
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Relative 0bar 0.1bar <±0.25 % Voltage Sewage, Viscous Fluid, Water - G3/4 0 → 10 V M12 Connector - - 6 mA 14 → 32 V dc
RS-stocknr. 719-1080
FabrikantnummerMPX5010DP
FabrikantNXP
14,49 €
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- - - ±5 % - - - - - - - - - -
RS-stocknr. 374-8799
Fabrikantnummer787265
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28,79 €
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Differential 1bar 10bar - Relay Air, Hydraulic Fluid, Oil Emulsion, Water - G1/4 - Spade Terminal - - - -
RS-stocknr. 922-7324
FabrikantnummerMPX5010DP
FabrikantNXP
10,044 €
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Differential 0bar 10kPa ±5 % Analogue Air, Fluid - - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc
RS-stocknr. 169-8093
FabrikantnummerADP51B61
FabrikantPanasonic
10,484 €
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Aantal stuks
Relative - - ±2.5 % Amplified Air - - 4 V PCB - - 10 mA -
RS-stocknr. 173-2215
FabrikantnummerSDP610-125PA
FabrikantSensirion
24,67 €
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Differential -125Pa 125Pa 3 % I2C Air, Nitrogen Gas, Oxygen Gas - 5.2 mm Tube - - - 4.6 ms <6 mA 3.6 V
RS-stocknr. 836-9035
FabrikantnummerADP51B61
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Relative - - ±2.5 % Amplified Air - - 4 V PCB - - 10 mA -
RS-stocknr. 455-4589
Fabrikantnummer5000BGM7000GG000A001
FabrikantGems Sensors
589,80 €
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Relative 25mbar 70mbar 0.2 % Analogue Sea Water - G1/4 4 → 20 mA DIN 43650 Type A - 5 ms - 9 → 35 V dc
RS-stocknr. 123-6659
FabrikantnummerX5072-TB-A1-CA-H1-PA 16.0 bar G
FabrikantDruck
301,83 €
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Gauge - 16bar ±0.2 % Analogue Fluid RSCAL G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V
RS-stocknr. 746-3477
FabrikantnummerX5072-TB-A1-CA-H1-PA 16.0 bar G
FabrikantDruck
218,00 €
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Relative - 16bar ±0.2 % Analogue Fluid - G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V
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Differential -125Pa 125Pa 3 % I2C Air, Nitrogen Gas, Oxygen Gas - 5.2 mm Tube - - - 4.6 ms <6 mA 3.6 V
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RS-stocknr. 169-8092
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Each (In a Tube of 100)
Aantal stuks
Relative - - ±2.5 % Amplified Air - - 4 V PCB - - 10 mA -
RS-stocknr. 797-5005
FabrikantRS PRO
133,19 €
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Aantal stuks
Relative 0bar 100bar ±0.25 % Voltage Air, Gas, Hydraulic Fluid, Liquid, Water - G1/4 0 → 5 V DIN 43650 Type C - - - 9 → 32 V dc