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 different 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 - Similar to 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 Process Connection Analogue Output Electrical Connection Communication Protocol Response Time Maximum Current Supply Voltage Interface
RS Stock No. 746-3524
Mfr. Part No.A5074-TB-A1-CA-H1-PA 1.0 bar A
BrandDruck
TWD9,398.00
Each
units
Absolute - 1bar ±0.2 % Analogue Fluid G1/4 0 → 5 V DIN 43650 Type A - 10 ms 3 mA 7 → 16 V -
RS Stock No. 199-3838
Mfr. Part No.PM620TS-10A
BrandDruck
TWD99,841.00
Each
units
Absolute 1.2bar 100bar - - - - - - - - - - -
RS Stock No. 746-3546
Mfr. Part No.A5074-TB-A1-CA-H1-PA 6.0 bar G
BrandDruck
TWD9,727.00
Each
units
Relative - 6bar ±0.2 % Analogue Fluid G1/4 0 → 5 V DIN 43650 Type A - 10 ms 3 mA 7 → 16 V -
RS Stock No. 746-3559
Mfr. Part No.A5074-TB-A1-CA-H1-PA 10.0 bar G
BrandDruck
TWD9,593.00
Each
units
Relative - 10bar ±0.2 % Analogue Fluid G1/4 0 → 5 V DIN 43650 Type A - 10 ms 3 mA 7 → 16 V -
RS Stock No. 746-3691
Mfr. Part No.D5071-TB-A3-CA-H1-PA 700 bar SG
BrandDruck
TWD16,998.00
Each
units
Relative - 700bar ±0.04 % Analogue Fluid G1/4 10 mV, 100 mV DIN 43650 Type A - 10 ms 3 mA 7 → 12 V -
RS Stock No. 746-3647
Mfr. Part No.X5072-TB-A2-CA-H1-PA 25.0 bar G
BrandDruck
TWD11,924.00
Each
units
Relative - 25bar ±0.1 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 199-3839
Mfr. Part No.PM620TS-13A
BrandDruck
TWD106,603.00
Each
units
Absolute 1.2bar 100bar - - - - - - - - - - -
RS Stock No. 746-3635
Mfr. Part No.X5072-TB-A2-CA-H1-PA 16.0 bar G
BrandDruck
TWD12,090.00
Each
units
Relative - 16bar ±0.1 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 746-3537
Mfr. Part No.A5074-TB-A1-CA-H1-PA 1.0 bar G
BrandDruck
TWD10,068.00
Each
units
Relative - 1bar ±0.2 % Analogue Fluid G1/4 0 → 5 V DIN 43650 Type A - 10 ms 3 mA 7 → 16 V -
RS Stock No. 746-3489
Mfr. Part No.X5072-TB-A1-CA-H1-PA 25.0 bar G
BrandDruck
TWD9,393.00
Each
units
Relative - 25bar ±0.2 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 746-3603
Mfr. Part No.X5072-TB-A2-CA-H1-PA 350 mbar A
BrandDruck
TWD11,131.00
Each
units
Absolute - 0.35bar ±0.1 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 746-3515
Mfr. Part No.A5074-TB-A1-CA-H1-PA 250 mbar G
BrandDruck
TWD11,186.00
Each
units
Relative - 0.25bar ±0.2 % Analogue Fluid G1/4 0 → 5 V DIN 43650 Type A - 10 ms 3 mA 7 → 16 V -
RS Stock No. 746-3650
Mfr. Part No.X5072-TB-A2-CA-H1-PA 100 bar SG
BrandDruck
TWD14,211.00
Each
units
Relative - 100bar ±0.1 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 746-3613
Mfr. Part No.X5072-TB-A2-CA-H1-PA 4.0 bar G
BrandDruck
TWD12,090.00
Each
units
Relative - 4bar ±0.1 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 746-3672
Mfr. Part No.X5072-TB-A2-CA-H1-PA 0.8 to 1.2 bar B
BrandDruck
TWD11,681.00
Each
units
Absolute 0.8bar 1.2bar ±0.1 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 285-289
Mfr. Part No.X610-02G-1300
BrandDruck
TWD32,082.00
Each
units
Gauge 0mbar 250mbar ±0.08 % Analogue Fluid G1/4 4 20 mA DIN 43650 Type A - - - 9 30 V dc -
RS Stock No. 746-3477
Mfr. Part No.X5072-TB-A1-CA-H1-PA 16.0 bar G
BrandDruck
TWD8,648.00
Each
units
Relative - 16bar ±0.2 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 746-3694
Mfr. Part No.D5071-TB-A3-CA-H1-PA 5 bar L
BrandDruck
TWD29,644.00
Each
units
Differential - 5bar ±0.04 % Analogue Fluid G1/4 10 mV, 100 mV DIN 43650 Type A - 10 ms 3 mA 7 → 12 V -
RS Stock No. 199-3835
Mfr. Part No.PM620T-10A
BrandDruck
TWD82,938.00
Each
units
Absolute 1.2bar 100bar - - - - - - - - - - -
RS Stock No. 746-3458
Mfr. Part No.X5072-TB-A1-CA-H1-PA 350 mbar A
BrandDruck
TWD9,264.00
Each
units
Absolute - 0.35bar ±0.2 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -