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 719-1030
製造零件編號MPX2010GP
BrandNXP
HK$156.69
單位
Relative 0bar 10kPa ±1 % - Air - 24 → 26 mV PCB Mount - 1 ms - 10 V dc -
RS庫存編號 922-7302
製造零件編號MPX2010GP
BrandNXP
HK$114.02
Each (In a Tray of 20)
單位
Relative 0bar 10kPa ±1 % - Air - 24 → 26 mV PCB Mount - 1 ms - 10 V dc -
RS庫存編號 719-1080
製造零件編號MPX5010DP
BrandNXP
HK$145.68
單位
- - - ±5 % Analogue Air, Fluid - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc -
RS庫存編號 719-1065
製造零件編號MPX4250A
BrandNXP
HK$225.52
單位
Absolute 20kPa 250kPa ±1.5 % Analogue Air - 4.9 V PCB Mount - 1 ms - 4.85 → 5.35 V dc -
RS庫存編號 922-7333
製造零件編號MPX5010GP
BrandNXP
HK$150.318
Each (In a Tray of 20)
單位
Relative 0bar 10kPa ±5 % Analogue Air, Fluid - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc -
RS庫存編號 922-7349
製造零件編號MPX5050GP
BrandNXP
HK$152.832
Each (In a Tray of 20)
單位
Relative 0bar 50kPa ±2.5 % Analogue Air - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc -
RS庫存編號 922-7409
製造零件編號MPXV5010DP
BrandNXP
HK$130.368
Each (In a Tray of 25)
單位
Differential 0bar 10kPa ±5 % Analogue Air, Fluid - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc -
RS庫存編號 719-1043
製造零件編號MPX2202A
BrandNXP
HK$157.42
單位
Absolute 0bar 200kPa ±1 % - Air - 38.5 → 41.5 mV PCB Mount - 1 ms - 10 V dc -
RS庫存編號 922-7368
製造零件編號MPXA4250AC6U
BrandNXP
HK$139.892
毎管:40 個
單位
Absolute 20kPa 250kPa ±1.5 % Analogue Air - 4.9 V PCB Mount - 1 ms - 4.85 → 5.35 V dc -
RS庫存編號 922-7305
製造零件編號MPVZ4006GW7U
BrandNXP
HK$90.30
Each (In a Tray of 40)
單位
Relative 0bar 6kPa ±2.5 % Analogue Air - 4.6 V PCB Mount - - - 4.75 → 5.25 V dc -
RS庫存編號 922-7403
製造零件編號MPXV5050GP
BrandNXP
HK$117.286
Each (In a Tray of 25)
單位
Relative 0bar 50kPa ±2.5 % Analogue Air - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc -
RS庫存編號 169-0627
製造零件編號MPX2202A
BrandNXP
HK$115.896
Each (In a Tray of 25)
單位
Absolute 0bar 200kPa ±1 % - Air - 38.5 → 41.5 mV PCB Mount - 1 ms - 10 V dc -
RS庫存編號 922-7406
製造零件編號MPXV5004GC7U
BrandNXP
HK$101.657
毎管:40 個
單位
Relative 0bar 3.92kPa ±1.5 % Analogue Air, Fluid - 1 → 4.9 V PCB Mount - - - 4.75 → 5.25 V dc -
RS庫存編號 752-2377
製造零件編號MPXV2202DPT1
BrandNXP
HK$144.84
單位
Differential 0bar 200kPa ±1 % Voltage Air - 38.5 → 41.5 mV PCB Mount - 1 ms 6 mA 16 V dc -
RS庫存編號 922-7399
製造零件編號MPXV5004DP
BrandNXP
HK$123.994
Each (In a Tray of 25)
單位
Differential 0bar 3.92kPa ±1.5 % Analogue Air, Fluid - 1 → 4.9 V PCB Mount - - - 4.75 → 5.25 V dc -
RS庫存編號 169-0629
製造零件編號MPX4250A
BrandNXP
HK$147.536
Each (In a Tray of 25)
單位
Absolute 20kPa 250kPa ±1.5 % Analogue Air - 4.9 V PCB Mount - 1 ms - 4.85 → 5.35 V dc -
RS庫存編號 922-7308
製造零件編號MPX2010DP
BrandNXP
HK$108.36
毎管:20 個
單位
Differential 0bar 10kPa ±1 % - Air - 24 → 26 mV PCB Mount - 1 ms - 10 V dc -
RS庫存編號 922-7327
製造零件編號MPX4250AP
BrandNXP
HK$143.934
Each (In a Tray of 20)
單位
Absolute 20kPa 250kPa ±1.5 % Analogue Air - 4.9 V PCB Mount - 1 ms - 4.85 → 5.35 V dc -
RS庫存編號 922-7324
製造零件編號MPX5010DP
BrandNXP
HK$119.858
Each (In a Tray of 20)
單位
Differential 0bar 10kPa ±5 % Analogue Air, Fluid - 4.7 V PCB Mount - 1 ms - 4.75 → 5.25 V dc -
RS庫存編號 719-1018
製造零件編號MPVZ4006GW7U
BrandNXP
HK$138.01
單位
Relative 0bar 6kPa ±2.46 % Analogue Air - 4.6 V PCB Mount - - - 4.75 → 5.25 V dc -