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 181-2090
製造零件編號142PC01D
BrandHoneywell
HK$5,191.08
單位
Differential 0psi 1psi ±0.75 % Amplified Gas - 1 6 V PCB 1 ms 20 mA 7 16 V dc - -
RS庫存編號 181-1384
製造零件編號142PC15A
BrandHoneywell
HK$3,468.31
單位
Absolute 0psi 15psi ±0.4 % Amplified Gas - 1 6 V PCB 1 ms 20 mA 7 16 V dc - -
RS庫存編號 395-241
製造零件編號164PC01D37
BrandHoneywell
HK$4,525.71
單位
Differential 0in wg 10in wg ±2 % Amplified Gas - 5.9 → 6.1 V Solder Tag 1 ms - 8 V dc - Plastic
RS庫存編號 667-0914
製造零件編號40PC100G2A
BrandHoneywell
HK$684.54
單位
Gauge 0psi 100psi 0.8 % Amplified Gas - 0.5 mA PCB 1 ms - 5 V dc - -
RS庫存編號 853-6462
製造零件編號PX2AG2XX002BAAAX
BrandHoneywell
HK$854.76
單位
Absolute 0bar 2bar ±0.25 % Analogue Air, Brake Fluid, Hydraulic Fluid, Oil, Refrigeration Fluid G1/8 0.5 4.5 V Metri-Pack 150 <2 ms 5 mA 4.75 5.25 V dc - Stainless Steel
RS庫存編號 177-5940
製造零件編號40PC100G2A
BrandHoneywell
HK$579.65
Each (In a Tray of 10)
單位
Gauge 0psi 100psi ±0.2 % Amplified Gas - 0.5 → 4.5 V PCB 1 ms 10 mA 4.75 → 5.25 V dc - -
RS庫存編號 169-7637
製造零件編號164PC01D37
BrandHoneywell
HK$6,345.746
個 (以毎盒:30)
單位
Differential 0in wg 10in wg ±2 % Amplified Gas - 5.9 6.1 V Solder Tag 1 ms - 8 V dc - Plastic
RS庫存編號 169-7642
製造零件編號PBN1B222-R6
BrandHoneywell
HK$427.761
毎盒:25 個
Box(es)
Gauge 24.9mbar 124.5mbar - Relay Air - - Tab - 40 mA 30 V ac/dc - PC
RS庫存編號 853-6471
製造零件編號PX2EF1XX050PAAAX
BrandHoneywell
HK$621.76
單位
Absolute 0psi 50psi ±0.25 % Analogue Air, Brake Fluid, Hydraulic Fluid, Oil, Refrigeration Fluid, Water 7/16 - 20 UNF SAE 0.5 4.5 V Wire Lead <2 ms 5 mA 4.75 5.25 V dc - Stainless Steel
RS庫存編號 169-7643
製造零件編號PBN1B332-R6
BrandHoneywell
HK$12,985.25
毎盒:25 個
Box(es)
Gauge 24.9mbar 124.5mbar - Relay Air - - Tab - 40 mA 30 V ac/dc - PC
RS庫存編號 177-5945
製造零件編號SCX100DN
BrandHoneywell
HK$1,131.507
個 (以毎盒:25)
單位
Differential 0psi 100psi ±1 % Wheatstone Bridge Pneumatic Fluid - 0 → 100 mV Solder Tag 100 μs - 20 V dc - Plastic
RS庫存編號 111-5921
製造零件編號PX3AG1BH010BSAAX
BrandHoneywell
HK$550.09
單位
Sealed Gauge 0bar 10bar ±0.25 % Analogue Air, Brake Fluid, Hydraulic Fluid, Oil, Refrigeration Fluid G1/4 0.5 4.5 V Metri-Pack 150 <2 ms 3 mA 4.75 5.25 V dc - Brass
RS庫存編號 821-4014
製造零件編號MLH100PGL06A
BrandHoneywell
HK$938.22
單位
Gauge 0psi 100psi ±0.25 % Amplified Fluid NPT 1/8 0.5 4.5 V Wire Lead <2 ms 8 mA 4.75 5.25 V dc - Plastic
RS庫存編號 169-7644
製造零件編號PBN1B222-R7
BrandHoneywell
HK$8,071.50
毎盒:25 個
Box(es)
Gauge 127mbar 1.036bar - Relay Air - - Tab - 40 mA 30 V ac/dc - PC
RS庫存編號 111-5922
製造零件編號PX3AG1BH025BSAAX
BrandHoneywell
HK$550.09
單位
Sealed Gauge 0bar 25bar ±0.25 % Analogue Air, Brake Fluid, Hydraulic Fluid, Oil, Refrigeration Fluid G1/4 0.5 4.5 V Metri-Pack 150 <2 ms 3 mA 4.75 5.25 V dc - Brass
RS庫存編號 395-285
製造零件編號176PC14HD2
BrandHoneywell
HK$5,677.48
單位
Differential 0in wg 14in wg ±3 % Unamplified Gas - 33 → 37 mV PCB 1 ms - 10 V dc - -
RS庫存編號 169-7657
製造零件編號26PCDFA6G
BrandHoneywell
HK$296.352
個 (以毎盒:25)
單位
Gauge 0psi 30psi ±0.25 % Unamplified Nitrogen Gas, Oxygen - 0 → 100 mV 4-Pin Connector 1 ms - 2.5 → 16 V dc - -
RS庫存編號 407-209
製造零件編號PBN1B222-R6
BrandHoneywell
HK$535.85
單位
Gauge 24.9mbar 124.5mbar - Relay Air - - Tab - 40 mA 30 V ac/dc - PC
RS庫存編號 455-5100
製造零件編號SCX100DN
BrandHoneywell
HK$1,162.68
單位
Differential 0psi 100psi ±0.1 % Unamplified Pneumatic Fluid - 99 → 101 mV Solder Tag 100 ms - 20 V dc - -
RS庫存編號 169-7641
製造零件編號176PC14HD2
BrandHoneywell
HK$2,274.913
個 (以毎盒:30)
單位
Differential 0in wg 14in wg ±3 % Wheatstone Bridge Gas - 33 37 mV PCB 1 ms - 10 V dc - -