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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Beskrivning Pris 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-artikelnummer 173-3527
Tillv. art.nrB58611K1100A006
VarumärkeEPCOS
352,86 kr
Each (In a Box of 40)
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Relative 0bar 1bar ±0.5 % - Fluid, Gas - - - PCB Mount - - - 10 V
RS-artikelnummer 745-1389
Tillv. art.nrB58611K1500A009
VarumärkeEPCOS
434,18 kr
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Relative 0bar 0.1bar ±1 % - Fluid, Gas - - - PCB Mount - - - 10 V
RS-artikelnummer 167-0469
Tillv. art.nrB58611K1100A003
VarumärkeEPCOS
394,722 kr
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Relative 0bar 0.1bar ±1 % - Fluid, Gas - - - PCB Mount - - - 10 V
RS-artikelnummer 745-1385
Tillv. art.nrB58611K1100A006
VarumärkeEPCOS
388,16 kr
Each
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Relative 0bar 1bar ±0.5 % - Fluid, Gas - - - PCB Mount - - - 10 V
RS-artikelnummer 745-1418
Tillv. art.nrB58621K1110A054
VarumärkeEPCOS
573,46 kr
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Relative 0bar 0.1bar ±1 % - Fluid, Gas - - - PCB Mount - 1 ms 7 mA 4.75 → 5.5 V
RS-artikelnummer 745-1382
Tillv. art.nrB58611K1100A003
VarumärkeEPCOS
434,18 kr
Each
Enheter
Relative 0bar 0.1bar ±1 % - Fluid, Gas - - - PCB Mount - - - 10 V
RS-artikelnummer 177-4875
Tillv. art.nrB58611K1500A9
VarumärkeEPCOS
394,722 kr
Each (In a Bag of 40)
Enheter
Relative 0bar 0.1bar ±1 % - Fluid, Gas - - - PCB Mount - - - 10 V
RS-artikelnummer 167-0473
Tillv. art.nrB58621K1110A054
VarumärkeEPCOS
557,01 kr
Each (In a Box of 40)
Enheter
Relative 0bar 0.1bar ±1 % - Fluid, Gas - - - PCB Mount - 1 ms 7 mA 4.75 → 5.5 V