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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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庫存編號 200-6130
製造零件編號MS583730BA01-50
HK$73.61
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RS庫存編號 200-6122
製造零件編號MS580301BA01-00
HK$132.252
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RS庫存編號 200-6124
製造零件編號MS580301BA01-00
HK$192.18
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RS庫存編號 200-6125
製造零件編號MS580502BA01-50
HK$73.679
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RS庫存編號 200-6101
製造零件編號325540009-50
HK$131.76
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RS庫存編號 200-6126
製造零件編號MS580502BA01-50
HK$89.22
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RS庫存編號 200-6102
製造零件編號325540009-50
HK$189.78
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RS庫存編號 207-4698
製造零件編號M327L-000006-500PG
HK$355.24
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Gauge 0psi 500psi 1.5 % Analogue Gas, Liquid Level - - - - - - 9 V -
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RS庫存編號 207-4679
製造零件編號20010085-07
HK$343.77
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Gauge 0bar 1000bar 1.5 % Analogue Gas, Liquid Level M12 - - - - - 9 V -
RS庫存編號 200-6108
製造零件編號86A3R-000000-005PG
HK$1,365.03
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RS庫存編號 200-6107
製造零件編號86-015G-C
HK$475.09
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RS庫存編號 200-6103
製造零件編號325541009-50
HK$132.46
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RS庫存編號 207-4701
製造零件編號M32JM-000105-100PG
HK$372.68
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Gauge 0psi 100psi 1.5 % I2C Gas, Liquid Level - - - - - - 5 V I2C
RS庫存編號 200-6127
製造零件編號MS583702BA01-50
HK$81.687
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RS庫存編號 200-6128
製造零件編號MS583702BA01-50
HK$139.72
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RS庫存編號 200-6129
製造零件編號MS583730BA01-50
HK$43.75
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RS庫存編號 207-4703
製造零件編號U5600-00000E-007BA
HK$2,094.47
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Gauge 0bar 7bar ±0.1 % Digital Gas, Liquid Level - - - - - - 3.6 V dc I2C
RS庫存編號 200-6109
製造零件編號DP86-005D
HK$2,389.36
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Differential 0psi 5psi ± 0.1 % - Fluid, Gas - - 4-Pin Connector - - - 5 V -
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RS庫存編號 207-4678
製造零件編號154N-100G-RT
HK$867.98
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Gauge 0psi 100psi - - Gas, Liquid Level - - - - - - - -
全新
RS庫存編號 207-4699
製造零件編號M32JM-00000E-010BG
HK$372.68
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Gauge 0bar 10bar 1.5 % I2C Gas, Liquid Level - - - - - - 5 V I2C