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 914-8369
製造零件編號DP101EP
BrandPanasonic
HK$830.37
單位
Gauge -1bar 10bar ±1 % Relay Non-Corrosive Gas G1/8 100 mA Wire Lead - 2.5 ms - 12 → 24 V dc -
RS庫存編號 914-8372
製造零件編號DP102A
BrandPanasonic
HK$1,024.65
單位
Relative -1bar 10bar - Analogue + PNP-NO/NC Programmable Non-Corrosive Gas G1/8 0.6 → 5 V, 2.4 → 20 mA Wire Lead - 5000 ms 100 mA 12 → 24 V dc -
RS庫存編號 914-8429
製造零件編號DP-002
BrandPanasonic
HK$671.97
單位
Relative 1MPa 0bar - PNP-NO/NC Air, Non-Corrosive Gas G1/8 - Wire Lead - 250 ms 50 mA 12 → 24 V dc -
RS庫存編號 914-8410
製造零件編號DP112AEPJ
BrandPanasonic
HK$1,815.96
單位
Relative -1bar 10bar ±1 % Relay Non-Corrosive Gas G1/8 0.6 → 5 V, 2.4 → 20 mA Wire Lead - 2.5 ms - 12 → 24 V dc -
RS庫存編號 914-8340
製造零件編號DP101A
BrandPanasonic
HK$1,610.03
單位
Relative -1bar 1bar - Analogue + NPN-NO/NC Non-Corrosive Gas G1/8 1 → 5 V dc, 4 → 20 mA Wire Lead - 5000 ms 100 mA 12 → 24 V dc -
RS庫存編號 169-8087
製造零件編號ADP51A11
BrandPanasonic
HK$99.591
毎管:100 個
單位
Relative - - ±4 % Amplified Air - 2.4 V PCB - - 3 mA 5 V dc -
RS庫存編號 914-8404
製造零件編號DP102NP
BrandPanasonic
HK$920.45
單位
Relative -1bar 10bar - PNP Non-Corrosive Gas NPT 1/8 - Wire Lead - 5000 ms 100 mA 12 → 24 V dc -
RS庫存編號 914-8413
製造零件編號DP112EPJ
BrandPanasonic
HK$1,674.22
單位
Relative -1bar 10bar ±1 % Relay Non-Corrosive Gas G1/8 100 mA Wire Lead - 2.5 ms - 12 → 24 V dc -
RS庫存編號 169-8085
製造零件編號ADP42510
BrandPanasonic
HK$126.207
毎管:100 個
單位
Relative - - ±0.3 % Voltage Air, Fluid - 100±40 mV PCB - - 1.5 mA - -
RS庫存編號 169-8094
製造零件編號ADP51B63
BrandPanasonic
HK$120.665
毎管:100 個
單位
Relative - - ±2.5 % Amplified Air - 4 V PCB - - 10 mA - -
RS庫存編號 169-8088
製造零件編號ADP5161
BrandPanasonic
HK$256.655
毎管:100 個
單位
Relative - - ±1.25 % Amplified Air - 4.5 V PCB - - 10 mA 5 V dc -
RS庫存編號 914-8344
製造零件編號DP101AEP
BrandPanasonic
HK$936.91
單位
Relative -1bar 10bar ±1 % PNP Open Collector Non-Corrosive Gas G1/8 1 → 5 V dc, 100 mA Wire Lead - 2.5 ms - 12 → 24 V dc -
RS庫存編號 836-9017
製造零件編號ADP5161
BrandPanasonic
HK$376.26
單位
Relative - - ±1.25 % Amplified Air - 4.5 V PCB - - 10 mA 5 V dc -
RS庫存編號 914-8426
製造零件編號DP-001-P
BrandPanasonic
HK$671.97
單位
Relative -1bar 1bar - PNP Air, Non-Corrosive Gas G1/8 - Wire Lead - 250 ms 50 mA 12 → 24 V dc -
RS庫存編號 914-8407
製造零件編號DP111AEPJ
BrandPanasonic
HK$1,815.96
單位
Relative -1bar 1bar ±1 % Relay Non-Corrosive Gas G1/8 1 → 5 V dc, 100 mA Wire Lead - 2.5 ms - 12 → 24 V dc -
RS庫存編號 169-8090
製造零件編號ADP5160
BrandPanasonic
HK$256.563
毎管:100 個
單位
Relative - - ±1.25 % Amplified Air - 4.5 V PCB - - 10 mA 5 V dc -
RS庫存編號 914-8334
製造零件編號DP-102-M-P
BrandPanasonic
HK$1,429.56
單位
Relative -1bar 10bar - PNP Non-Corrosive Gas G1/8 - Wire Lead - 5000 ms 100 mA 12 → 24 V dc -
RS庫存編號 914-8417
製造零件編號DP-001
BrandPanasonic
HK$663.87
單位
Relative -1bar 1bar - NPN-NO/NC Air, Non-Corrosive Gas G1/8 - Wire Lead - 250 ms 50 mA 12 → 24 V dc -
RS庫存編號 914-8394
製造零件編號DP102M
BrandPanasonic
HK$1,429.56
單位
Relative -1bar 10bar - Analogue + PNP-NO/NC Programmable Non-Corrosive Gas G1/8 - Wire Lead - 5000 ms 100 mA 12 → 24 V dc -
RS庫存編號 836-9035
製造零件編號ADP51B61
BrandPanasonic
HK$170.80
單位
Relative - - ±2.5 % Amplified Air - 4 V PCB - - 10 mA - -