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. 124-2164
FabrikantnummerXMPA06B2131C
41,70 €
Each
Aantal stuks
Differential 0.2 (Falling) bar, 1 (Rising) bar 4.8 (Falling) bar, 6 (Rising) bar <3.5 (Repeat) % 2NC Air, Fresh Water, Sea Water - G1/4 - Screw Clamp - - - -
RS-stocknr. 463-5723
Fabrikantnummer401001/000-460-405-523-20-601-61/000
FabrikantJumo
149,61 €
Each
Aantal stuks
- 0bar 16bar 0.5 % - Hydraulic Fluid, Pneumatic Fluid - G1/2 4 → 20 mA DIN 43650 Type A - - - 15 → 30 V dc
RS-stocknr. 410-6231
Fabrikantnummer404304/000-414-406-02-298
FabrikantJumo
354,24 €
Each
Aantal stuks
Differential, Gauge 0mbar 100mbar - Analogue Non-Aggressive Gas - - 4 → 20 mA M12 Connector - - - 230 V ac
RS-stocknr. 102-4130
FabrikantRS PRO
258,19 €
Each
Aantal stuks
Relative 0bar 40bar ±0.25 % Analogue Gas, Liquid - G1/4 4 → 20 mA DIN 43650 Type A - - - 9 → 32 V dc
RS-stocknr. 896-8418
Fabrikantnummer3500B350MG01B000
FabrikantGems Sensors
126,00 €
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Aantal stuks
Relative - 0.35bar 0.25 % Current Air, Gas, Water - G1/4 4 → 20 mA DIN 43650 Type C - - - 10 → 30 V dc
RS-stocknr. 361-3429
FabrikantnummerXMLA300D2S12
167,00 €
Each
Aantal stuks
Differential 20bar 300bar 2 % Relay Hydraulic Fluid - G1/4 - M20 Cable Gland - - 3 A ac, 100 mA dc 120 → 240 V ac, 250 V dc
RS-stocknr. 124-1470
Fabrikantnummer46879227
FabrikantWIKA
142,44 €
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Aantal stuks
- 0bar 250bar 0.5 % Analogue Gas, Liquid - G1/4 4 → 20 mA DIN 175301-803 C - < 4 ms - 8 → 30 V dc
RS-stocknr. 914-8417
FabrikantnummerDP-001
FabrikantPanasonic
99,56 €
Each
Aantal stuks
Relative -1bar 1bar - NPN-NO/NC Air, Non-Corrosive Gas - G1/8 - Wire Lead - 250 ms 50 mA 12 → 24 V dc
RS-stocknr. 746-3515
FabrikantnummerA5074-TB-A1-CA-H1-PA 250 mbar G
FabrikantDruck
284,00 €
Each
Aantal stuks
Relative - 0.25bar ±0.2 % Analogue Fluid - G1/4 0 → 5 V DIN 43650 Type A - 10 ms 3 mA 7 → 16 V
RS-stocknr. 746-3603
FabrikantnummerX5072-TB-A2-CA-H1-PA 350 mbar A
FabrikantDruck
284,00 €
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Aantal stuks
Absolute - 0.35bar ±0.1 % Analogue Fluid - G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V
RS-stocknr. 739-6721
FabrikantnummerPK7524
Fabrikantifm electronic
172,29 €
Each
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Relative 0bar 10bar <±2.5 % PNP-2NO Gas, Liquid - G1/4 - M12 Connector - - 500 mA 9.6 → 32 V dc
RS-stocknr. 827-6668
FabrikantnummerPSE531-M5-L
FabrikantSMC
55,21 €
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Aantal stuks
Relative 0bar -101kPa ±5 % Analogue Air, Gas - - 0.6 → 1 V, 1 → 5 V Wire Lead - - 15 mA 12 → 24 V dc
RS-stocknr. 455-5122
FabrikantnummerSDX01G2
FabrikantHoneywell
79,00 €
Each
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Gauge 0psi 1psi ±0.2 % Unamplified Gas - - 17.37 → 18.18 mV PCB - 100 μs - 20 V dc
RS-stocknr. 177-5947
FabrikantnummerSDX01G2
FabrikantHoneywell
66,286 €
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Aantal stuks
Relative 0psi 1psi ±0.2 % Wheatstone Bridge Gas - - 0 → 18 mV PCB - 100 μs - 20 V dc
RS-stocknr. 609-7094
FabrikantnummerXMPE12C2242
80,40 €
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Aantal stuks
Differential 1.3bar 12bar 3.5 % - Air, Fresh Water, Sea Water - G3/8 - PG13.5 Cable Gland - - 1.5 A -
RS-stocknr. 828-5713
FabrikantRS PRO
183,18 €
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Relative 0bar 0.1bar <±0.25 % Voltage Oil, Water - G1/4 0.5 → 4.5 V DIN 43650 Type A - - 6 mA 9 → 32 V dc
RS-stocknr. 827-6674
FabrikantnummerPSE541-R06
FabrikantSMC
73,34 €
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Aantal stuks
Relative 0bar -101kPa ±2 % Analogue Air, Gas - 6 mm Tube 0.6 → 1 V, 1 → 5 V ZS-28-C Connector - - 15 mA 12 → 24 V dc
RS-stocknr. 518-4462
FabrikantRS PRO
120,54 €
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Aantal stuks
Gauge 0bar 25bar ≤0.5 % Analogue Gas, Liquid - G1/4 4 → 20 mA M12 Connector - ≤3 ms - 10 → 30 V dc
RS-stocknr. 124-2166
FabrikantnummerXMPA06B2141C205
51,80 €
Each
Aantal stuks
Differential 0.2 (Falling) bar, 1 (Rising) bar 6bar <3.5 (Repeat) % 2NC Air, Fresh Water, Sea Water - G1/4 - Screw Clamp - - - -
RS-stocknr. 448-8117
Fabrikantnummer0184459031-SS
FabrikantSuco
108,98 €
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Aantal stuks
- 10bar 50bar - Relay Air, Heating Oil, Hydraulic Fluid, Turpentine - G1/4 - DIN 43650 Type A - - 4 A 250 V