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. 795-4737
Fabrikantnummer3100B0010G05G000
FabrikantGems Sensors
132,45 €
Each
Aantal stuks
Gauge 0bar 10bar ±0.25 % Current Fluid, Gas - G1/4 4 → 20 mA DIN 43650 Type A - 1 ms 20 mA 8 → 30 V dc
RS-stocknr. 146-2930
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125,00 €
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Aantal stuks
Differential 0bar 0.25bar 0.1 % Analogue Air, Fresh Water, Gas, Hydraulic Oil - - 0 → 10 V 3-Pin DIN 43650 Male Connector - ≤2 ms <7 mA 24 V dc
RS-stocknr. 125-1312
FabrikantnummerPN2099
Fabrikantifm electronic
368,70 €
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Relative -1bar 1bar <±0.4 % Analogue + PNP-NO/NC Programmable Fluid - G1/4 0 → 10 V, 4 → 20 mA M12 Connector IO-LINK <1.5 (Minimum Switching Output) ms, <3 (Maximum Analogue Output) ms 250 mA 18 → 30 V dc
RS-stocknr. 124-1467
Fabrikantnummer46879447
FabrikantWIKA
522,62 €
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- 0psi 14.22psi 0.5 % Analogue Liquid - - 4 → 20 mA PUR Cable (15 metres) - - - 10 → 30 V dc
RS-stocknr. 424-5774
Fabrikantnummer404366/000-463-405-504-20-61/000
FabrikantJumo
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Relative 0bar 60bar 0.5 % Analogue Fluid, Gas - G1/2 4 → 20 mA DIN 43650 Type A - - - 10 → 30 V dc
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FabrikantHoneywell
6,45 €
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Gauge 0psi 30psi ±0.25 %FSS BFSL Transistor Gas, Liquid - - - - - - - 3.6 V
RS-stocknr. 176-7925
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- 0bar 400bar ±0.5 (Measurement) %, 0.1 % Analogue Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid - - 0.5 → 4.5 V 4 Pin M12 Male Connector - ≤2 ms 7 mA 5 V dc
RS-stocknr. 162-2079
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Differential 0bar 16bar ±0.5 % Analogue Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid - - 4 → 20 mA 4-Pin Male Connector - 2 ms 20 mA 12 → 24 V dc
RS-stocknr. 135-3741
FabrikantnummerXMLB010C2S11
258,16 €
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- 0bar 10bar 2 % 1CO Corrosive Fluid - - - PG 13.5 - - 3 A @ 120 V ac, 100 mA @ 250 V dc 240 V ac, 250 V dc
RS-stocknr. 123-6138
Fabrikantnummer251237
FabrikantGems Sensors
35,30 €
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- 125bar 215bar ±7.6 bar SPST-NC Liquid - BSP 1/4 - 1/4 x 1/32 Spade Terminal - - - -
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RS-stocknr. 213-3338
FabrikantnummerPBS2-RB400SG2SS0NMA0Z
FabrikantSick
300,00 €
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Relative 0bar 400bar <±0.5 % PNP/NPN-NO/NC + Current/Voltage Air, Gas, Hydraulic Fluid, Liquid, Oil, Water - - 4-20mA / 0-10V M12 Connector IO-LINK 5 ms 600 mA 15 - 35 V
RS-stocknr. 175-5049
FabrikantRS PRO
148,42 €
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Relative 0psi 3600psi ±0.25 % Analogue - - NPT 1/4 0 → 5 V M12 Connector - - - 9 → 32 V dc
RS-stocknr. 136-5037
Fabrikantnummer3100B0060G01E000
FabrikantGems Sensors
123,00 €
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Relative 0bar 60bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil - G1/4 4 → 20 mA 4-Pin M12 x 1 Connector - 1 ms 2 (Sink & Source) mA 8 → 30 V dc
RS-stocknr. 176-7886
FabrikantnummerXMLP060BD270
135,67 €
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- 0bar 60bar ±0.5 (Measurement) %, 0.1 % Analogue Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid - 7/16 - 20 UNF SAE 4 → 20 mA 4 Pin M12 Male Connector - ≤2 ms 23 mA 12 → 24 V dc
RS-stocknr. 739-6771
FabrikantnummerPBT-RB025SG1SSNAMA0Z
FabrikantSick
114,00 €
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Relative 0bar 25bar ±0.5 % Analogue Fluid, Gas - G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc
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Relative 0bar 40bar 0.5 % Current Hydraulic Fluid - G1/4 4 → 20 mA - - - - 8 → 30 V dc
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FabrikantDruck
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Absolute 1.2bar 100bar - - - - - - - - - - -
RS-stocknr. 125-1320
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Fabrikantifm electronic
361,60 €
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Relative -0.125bar 2.5bar <±0.4 % Analogue + PNP-NO/NC Programmable Fluid - G1/4 0 → 10 V, 4 → 20 mA M12 Connector IO-LINK <1.5 (Minimum Switching Output) ms, <3 (Maximum Analogue Output) ms 250 mA 18 → 30 V dc
RS-stocknr. 173-2222
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RS-stocknr. 210-2304
FabrikantnummerNPA-300B-005D
17,466 €
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Differential 5psi 60psi ±1.5 % Analogue Gas - - - - - - - 3.3 V