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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รายละเอียดสินค้า / Description ราคา / 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 Stock No. 896-8535
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3500R0006G01B000
Brand :Gems Sensors
THB4,431.48
Each
Units
Relative - 6bar 0.25 % Voltage Air, Gas, Water G1/4 0 → 5 V DIN 43650 Type C - - - 30 V dc -
RS Stock No. 123-7136
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SDP600-025Pa
Brand :Sensirion
THB1,311.12
Each
Units
Differential -25Pa 25Pa 3 % I2C Air, Nitrogen Gas, Oxygen Gas 5.2 mm Tube - - - 4.6 ms <6 mA 3.6 V -
RS Stock No. 374-8755
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.787261
Brand :Burkert
THB1,040.67
Each
Units
Differential 1bar 10bar - Relay Air, Hydraulic Fluid, Oil Emulsion, Water G1/4 - Spade Terminal - - - - -
RS Stock No. 774-4104
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SDP610-500Pa
Brand :Sensirion
THB1,311.12
Each
Units
Differential -500Pa 500Pa 3 % I2C Air, Non-Aggressive Gas - - 4 Pin SMD Connector - 4.6 ms 6 mA 2.7 → 3.3 V dc -
RS Stock No. 835-3898
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PT5412
THB4,556.92
Each
Units
Relative 0bar 160bar ±0.5 % Analogue Gas, Liquid G1/4 4 → 20 mA M12 Connector - 1 ms - 8.5 → 36 V dc -
RS Stock No. 313-5317
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.14X1AA1GV1
Brand :Vega
THB8,601.85
Each
Units
Relative 0bar 1bar 0.3 % - Fluid, Gas, Vapour G1/2 4 → 20 mA DIN 43650 Connector - - - 12 → 36 V dc -
RS Stock No. 455-4696
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3100B0400S01B000
Brand :Gems Sensors
THB4,417.75
Each
Units
Gauge 0bar 400bar 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 Stock No. 397-2324
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.6101-0004
Brand :Herga
THB1,479.15
Each
Units
Differential 0.07bar 2.75bar - Relay Fluid - - - - - 5 A 250 V ac -
RS Stock No. 102-4139
Brand :RS PRO
THB17,819.35
Each
Units
Relative 0bar 5bar ±0.25 % Analogue Grey Water, Sewage, Viscous Fluid G3/4 4 → 20 mA M12 4-pin - - 28 mA 12 → 28 V dc -
RS Stock No. 788-4925
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2SMPP-03
Brand :Omron
THB211.67
Each: (In a Pack of 2)
Units
Relative -50kPa 50kPa - Amplified Air - - PCB - - 200 μA - -
RS Stock No. 609-7088
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XMPE12C2131
THB1,968.53
Each
Units
Differential 1.3bar 12bar 3.5 % - Air, Fresh Water, Sea Water G1/4 - PG13.5 Cable Gland - - 1.5 A - -
RS Stock No. 111-5920
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PX3AN2BS100PAAAX
Brand :Honeywell
THB1,708.20
Each
Units
Absolute 0psi 100psi ±0.25 % Analogue Air, Brake Fluid, Hydraulic Fluid, Oil, Refrigeration Fluid NPT 1/8 0.5 → 4.5 V Metri-Pack 150 - <2 ms 3 mA 4.75 → 5.25 V dc -
RS Stock No. 395-257
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.163PC01D75
Brand :Honeywell
THB16,182.65
Each
Units
Differential -2.5in wg 2.5in wg ±2 % Amplified Gas - 1.2 V Solder Tag - 1 ms - 8 V dc -
RS Stock No. 896-8446
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3500B0006G01E000
Brand :Gems Sensors
THB4,303.30
Each
Units
Relative - 6bar 0.25 % Current Air, Gas, Water G1/4 4 → 20 mA M12 Connector - - - 10 → 30 V dc -
RS Stock No. 795-4752
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3100B0250S05G000
Brand :Gems Sensors
THB5,237.15
Each
Units
Relative 0bar 250bar ±0.25 % Current Fluid, Gas G1/4 4 → 20 mA DIN 43650 Type A - 1 ms 20 mA 8 → 30 V dc -
RS Stock No. 725-5945
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.12719316
Brand :WIKA
THB4,854.95
Each
Units
Relative 0bar 40bar 0.5 % Current Hydraulic Fluid - 4 → 20 mA - - - - 8 → 30 V dc -
RS Stock No. 746-3470
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.X5072-TB-A1-CA-H1-PA 10.0 bar G
Brand :Druck
THB8,927.06
Each
Units
Relative - 10bar ±0.2 % Analogue Fluid G1/4 4 → 20 mA DIN 43650 Type A - 10 ms 20 mA 7 → 28 V -
RS Stock No. 177-5944
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SCX05DN
Brand :Honeywell
THB4,342.466
Each (In a Box of 25)
Units
Differential 0psi 5psi ±1 % Wheatstone Bridge Pneumatic Fluid - 0 → 60 mV Solder Tag - 100 μs - 20 V dc -
RS Stock No. 914-8369
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.DP101EP
Brand :Panasonic
THB3,617.80
Each
Units
Gauge -1bar 10bar ±1 % Relay Non-Corrosive Gas G1/8 100 mA Wire Lead - 2.5 ms - 12 → 24 V dc -
RS Stock No. 455-5065
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SCX01DN
Brand :Honeywell
THB5,277.79
Each
Units
Differential 0psi 1psi ±0.1 % Unamplified Pneumatic Fluid - 17.82 → 18.18 mV Solder Tag - 100 ms - 20 V dc -
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