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. 736-1462
Mfr. Part No.PBS-RB010SG1SSNAMA0Z
BrandSick
TWD11,900.00
Each
units
Relative 0bar 10bar ±1 % 2 x PNP NO/NC Programmable Fluid, Gas G1/4 - M12 Connector - 3 ms 250 mA 15 → 35 V dc -
RS Stock No. 736-1478
Mfr. Part No.PBS-RB010SG2SS0AMA0Z
BrandSick
TWD11,900.00
Each
units
Relative 0bar 10bar ±1 % 2 x PNP NO/NC Programmable Fluid, Gas G1/4 - M12 Connector - 3 ms 250 mA 15 → 35 V dc -
RS Stock No. 739-6774
Mfr. Part No.PBT-RB1X0SG1SSNAMA0Z
BrandSick
TWD5,800.00
Each
units
Relative 0bar 1bar ±0.5 % Analogue Fluid, Gas G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc -
RS Stock No. 736-1475
Mfr. Part No.PBS-RB400SG1SSNAMA0Z
BrandSick
TWD11,900.00
Each
units
Relative 0bar 400bar ±1 % 2 x PNP NO/NC Programmable Fluid, Gas G1/4 - M12 Connector - 3 ms 250 mA 15 → 35 V dc -
RS Stock No. 739-6787
Mfr. Part No.PBT-RB400SG1SSNAMA0Z
BrandSick
TWD5,800.00
Each
units
Relative 0bar 400bar ±0.5 % Analogue Fluid, Gas G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc -
RS Stock No. 736-1481
Mfr. Part No.PBS-RB400SG2SS0AMA0Z
BrandSick
TWD9,246.00
Each
units
Relative 0bar 400bar ±1 % 2 x PNP NO/NC Programmable Fluid, Gas G1/4 - M12 Connector - 3 ms 250 mA 15 → 35 V dc -
RS Stock No. 739-6783
Mfr. Part No.PBT-RB250SG1SSNAMA0Z
BrandSick
TWD5,800.00
Each
units
Relative 0bar 250bar ±0.5 % Analogue Fluid, Gas G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc -
RS Stock No. 736-1504
Mfr. Part No.PBS-RB400SG2SS0BMA0Z
BrandSick
TWD13,300.00
Each
units
Relative 0bar 400bar ±1 % Analogue + PNP NO/NC Programmable Fluid, Gas G1/4 4 → 20 mA M12 Connector - 3 ms 250 mA 15 → 35 V dc -
RS Stock No. 736-1484
Mfr. Part No.PBS-RB010SG1SSNBMA0Z
BrandSick
TWD13,300.00
Each
units
Relative 0bar 10bar ±1 % Analogue + PNP NO/NC Programmable Fluid, Gas G1/4 4 → 20 mA M12 Connector - 3 ms 250 mA 15 → 35 V dc -
New
RS Stock No. 201-7894
Mfr. Part No.PAC50-AGC
BrandSick
TWD5,178.00
Each
units
Gauge -1bar 0bar ± 1.5 % Transistor Gas - - - - - - 17 → 30 V -
RS Stock No. 739-6771
Mfr. Part No.PBT-RB025SG1SSNAMA0Z
BrandSick
TWD5,800.00
Each
units
Relative 0bar 25bar ±0.5 % Analogue Fluid, Gas G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc -
RS Stock No. 736-1490
Mfr. Part No.PBS-RB010SG2SS0BMA0Z
BrandSick
TWD13,300.00
Each
units
Relative 0bar 10bar ±1 % Analogue + PNP NO/NC Programmable Fluid, Gas G1/4 4 → 20 mA M12 Connector - 3 ms 250 mA 15 → 35 V dc -
RS Stock No. 739-6777
Mfr. Part No.PBT-RB010SG1SSNAMA0Z
BrandSick
TWD5,800.00
Each
units
Relative 0bar 10bar ±0.5 % Analogue Fluid, Gas G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc -
RS Stock No. 739-6780
Mfr. Part No.PBT-RB100SG1SSNAMA0Z
BrandSick
TWD5,800.00
Each
units
Relative 0bar 100bar ±0.5 % Analogue Fluid, Gas G1/4 4 → 20 mA M12 Connector - 4 ms 25 mA 8 → 30 V dc -
RS Stock No. 736-1488
Mfr. Part No.PBS-RB100SG1SSNBMA0Z
BrandSick
TWD13,300.00
Each
units
Relative 0bar 100bar ±1 % Analogue + PNP NO/NC Programmable Fluid, Gas G1/4 4 → 20 mA M12 Connector - 3 ms 250 mA 15 → 35 V dc -