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 Response Time Maximum Current Supply Voltage Interface Housing Material
RS庫存編號 395-7123
製造零件編號2600BGA2519M3JA003
HK$4,503.51
單位
Gauge 0bar 2.5bar 0.25 % - - - 4 → 20 mA Wire Lead 0.5 ms - 7 → 35 V dc - Stainless Steel
RS庫存編號 795-4711
製造零件編號3100R0010G01B000
HK$930.38
單位
Gauge 0bar 10bar ±0.25 % Voltage Fluid, Gas G1/4 0 → 5 V DIN 43650 Type A 1 ms 4.5 mA 7 → 30 V dc - Stainless Steel
RS庫存編號 455-4624
製造零件編號3100B0010G01B000
HK$1,480.01
單位
Gauge 0bar 10bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA DIN 43650 Type C 1 ms - 10 → 30 V dc - -
RS庫存編號 896-8471
製造零件編號3500B02B5A01B000
HK$1,441.25
單位
Absolute - 2.5bar 0.25 % Current Air, Gas, Water G1/4 4 → 20 mA DIN 43650 Type C - - 10 → 30 V dc - Stainless Steel
RS庫存編號 896-8522
製造零件編號3500R350MG01B000
HK$1,134.58
單位
Gauge - 350mbar 0.25 % Voltage Air, Gas, Water G1/4 0 → 5 V DIN 43650 Type C - - 30 V dc - Stainless Steel
RS庫存編號 455-4804
製造零件編號3100B0600S01E000
HK$979.84
單位
- 0bar 600bar 0.25 % - Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA M12 Connector - - 10 → 36 V dc - Stainless Steel
RS庫存編號 455-4630
製造零件編號3100B0016G01B000
HK$930.38
單位
Gauge 0bar 16bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA DIN 43650 Type C 1 ms - 8 → 30 V dc - -
RS庫存編號 535-1202
製造零件編號5266050LBACTI
HK$1,592.86
單位
Differential -50Pa 50Pa ±1 % Analogue Air, Non-Conductive Gas - 0 → 10 V Terminal Strip 1 s - 24 V ac/dc - Stainless Steel
RS庫存編號 455-4551
製造零件編號22ISBGB1000ABUA001
HK$2,165.54
單位
Gauge 0bar 10bar 0.25 % Analogue Fluid, Gas BSP 1/4 4 → 20 mA DIN 43650 Type A - - 7 → 35 V dc - -
RS庫存編號 455-4567
製造零件編號22ISBGB2500ABUA001
HK$2,543.15
單位
Gauge 0bar 25bar 0.25 % Analogue Fluid, Gas BSP 1/4 4 → 20 mA DIN 43650 Type A - - 7 → 35 V dc - -
RS庫存編號 455-4781
製造零件編號3100B0250S01E000
HK$979.84
單位
Gauge 0bar 250bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA M12 Connector 1 ms - 8 → 30 V dc - -
RS庫存編號 896-8496
製造零件編號3500B0001A01G000
HK$1,291.16
單位
Absolute - 1bar 0.25 % Current Air, Gas, Water G1/4 4 → 20 mA DIN 43650 Type A - - 10 → 30 V dc - Stainless Steel
RS庫存編號 455-4652
製造零件編號3100B0040G01B000
HK$869.52
單位
Gauge 0bar 40bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA DIN 43650 Type A 1 ms - 8 → 30 V dc - -
RS庫存編號 795-4737
製造零件編號3100B0010G05G000
HK$1,049.36
單位
Gauge 0bar 10bar ±0.25 % Current Fluid, Gas G1/4 4 → 20 mA DIN 43650 Type A 1 ms 20 mA 8 → 30 V dc - Stainless Steel
RS庫存編號 136-5056
製造零件編號3100S0040G01E000
HK$1,088.71
單位
Gauge 0bar 40bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 0 → 10 V 4-Pin M12 x 1 Connector 1 ms 2 (Sink & Source) mA 8 → 30 V dc - 17-4 PH Stainless Steel (Wetted Part)
RS庫存編號 136-5057
製造零件編號3100S0060G01E000
HK$1,088.71
單位
Gauge 0bar 60bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 0 → 10 V 4-Pin M12 x 1 Connector 1 ms 2 (Sink & Source) mA 8 → 30 V dc - 17-4 PH Stainless Steel (Wetted Part)
RS庫存編號 896-8434
製造零件編號3500B02B5G01E000
HK$1,088.71
單位
Gauge - 2.5bar 0.25 % Current Air, Gas, Water G1/4 4 → 20 mA M12 Connector - - 10 → 30 V dc - Stainless Steel
RS庫存編號 136-5067
製造零件編號3100S0025G05G000
HK$1,165.96
單位
Gauge 0bar 25bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 0 → 10 V Large DIN Connector 1 ms 2 (Sink & Source) mA 8 → 30 V dc - 17-4 PH Stainless Steel (Wetted Part)
RS庫存編號 136-5080
製造零件編號3200B0250S05BR00
HK$1,182.86
單位
Gauge 0bar 250bar - Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA 9.4 mm DIN Connector 1 ms 2 (Sink & Source) mA 8 → 30 V dc - 17-4 PH Stainless Steel (Wetted Part)
RS庫存編號 136-5031
製造零件編號3100B0160S05G000
HK$1,165.96
單位
Gauge 0bar 160bar 0.25 % Analogue Air Fluid, Hydraulic Fluid, Hydraulic Oil, Oil G1/4 4 → 20 mA Large DIN Connector 1 ms 2 (Sink & Source) mA 8 → 30 V dc - 17-4 PH Stainless Steel (Wetted Part)