Pressure Sensors | Pressure Transducers | RS
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    Pressure Sensors

    What are 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. You can find out more on our useful pressure sensors guide.

    There are various sensor technologies used within pressure sensor devices. Depending on the measurement requirements, this can influence their sensing accuracy and reliability. The mechanical displacement within the sensor is turned into an electrical output signal which is achieved with 5 different methods.

    • Resistive Sensors - These types of sensors use the change in electrical resistance of a strain gauge connected to the diaphragm.
    • Capacitive Sensors - Are highly sensitive and are able to measure low pressure under 10 bar while still withstanding large overloads.
    • Piezoelectric Sensors - 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 Sensors - 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 – Short for micro-electro-mechanical system and contains capacitive or piezo pressure sensing mechanisms on silicon at micron level resolution.

    Types of Pressure Sensors

    There are various properties which can be used to classify the type of sensor it is and its appropriate application, including; 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 Sensors - Similar to gauge pressure sensors 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 a wide variety of applications across many industries. These include medical, aviation, automotive and marine. Take a look at our comprehensive range of pressure sensors, many brought to you from industry leading brands including our very own, RS Pro.

    3606 Products showing for Pressure Sensors

    Honeywell
    Differential
    0psi
    1psi
    ±1 %
    Wheatstone Bridge
    Pneumatic Fluid
    -
    0 → 18 mV
    Solder Tag
    -
    100 μs
    -
    -
    20 V dc
    -
    Plastic
    -
    -
    +85°C
    -40°C
    -
    WIKA
    Gauge
    -1bar
    0bar
    ± 0.25%
    Current (2-Wire)
    -
    -
    -
    -
    -
    -
    -
    S-20
    8 → 35 V
    -
    -
    -
    IP65
    -
    -
    -
    Honeywell
    Absolute
    -
    150psi
    ±0.25%
    Ratiometric
    Gas, Liquid, Oil
    -
    -
    -
    -
    -
    -
    -
    24 V
    -
    -
    -
    IP65
    -
    -
    -
    WIKA
    Absolute, Gauge, Vacuum
    -1bar
    0bar
    ±1 to ±2.4 %
    -
    -
    -
    -
    -
    -
    -
    -
    A-10
    -
    -
    -
    -
    -
    -
    -
    -
    WIKA
    -
    0bar
    250bar
    ±0.5 %
    Current
    Adhesive, Contaminated Media, Crystallising, Particle-Laden, Paste-Like, Viscous
    G1/2
    4 → 20 mA
    Angular connector DIN 175301-803 A
    -
    -
    20 mA
    S-11
    10 → 30 V dc
    -
    Stainless Steel
    -
    IP65
    +100°C
    -30°C
    Thread Mount
    ifm electronic
    Relative
    0bar
    250bar
    ±0.5 %
    2x PNP/NPN-NO/NC
    Fluid
    G1/4
    -
    M12 Connector
    IO-LINK
    <3 (Minimum Switching Output) ms
    150 mA @ +60 °C, 200 mA @ +60 °C, 250 mA @ +40 °C
    -
    18 → 30 V dc
    IO-Link
    PBT GF20, PBT+PC GF30, PC, Stainless Steel
    -
    IP65, IP67
    +80°C
    -25°C
    -
    Telemecanique Sensors
    Differential
    1.3bar
    20bar
    2 %
    Relay
    Air, Fresh Water, Hydraulic Fluid, Sea Water
    G1/4
    -
    PG13.5 Cable Gland
    -
    -
    3 A ac, 100 mA dc
    -
    120 → 240 V ac, 250 V dc
    -
    Zinc Alloy
    -
    IP66
    +70°C
    -25°C
    -
    WIKA
    -
    0bar
    0.6bar
    ±0.5 %
    Current
    Adhesive, Contaminated Media, Crystallising, Particle-Laden, Paste-Like, Viscous
    -
    4 → 20 mA
    Angular connector DIN 175301-803 A
    -
    -
    20 mA
    S-11
    10 → 30 V dc
    -
    Stainless Steel
    -
    IP65
    +100°C
    -30°C
    Thread Mount
    Telemecanique Sensors
    Differential
    0bar
    250bar
    ≤0.1 %
    2x PNP-NO/NC
    Air, Fresh Water, Hydraulic Oil, Refrigeration Fluid
    G1/4
    -
    M12 Connector
    -
    ≤5 ms
    ≤50 mA
    -
    24 V dc
    -
    Polyacrylamide, Stainless Steel
    -
    IP65, IP67
    +80°C
    -20°C
    -
    WIKA
    Absolute, Gauge, Vacuum
    0bar
    100bar
    ±1 to ±2.4 %
    -
    -
    -
    -
    -
    -
    -
    -
    A-10
    -
    -
    -
    -
    -
    -
    -
    -
    Telemecanique Sensors
    Differential
    1.28bar
    16bar
    = 1 %
    Analogue + discrete
    Air, Fresh Water, Hydraulic Oil, Refrigeration Fluid
    G1/4
    -
    -
    -
    -
    -
    -
    24 V dc
    -
    -
    -
    IP65, IP67
    -
    -
    -
    WIKA
    Absolute, Gauge, Vacuum
    0bar
    16bar
    ±1 to ±2.4 %
    -
    -
    -
    -
    -
    -
    -
    -
    A-10
    -
    -
    -
    -
    -
    -
    -
    -
    WIKA
    Absolute, Gauge, Vacuum
    0bar
    16bar
    ±1 to ±2.4 %
    -
    -
    -
    -
    -
    -
    -
    -
    A-10
    -
    -
    -
    -
    -
    -
    -
    -
    WIKA
    Gauge
    0bar
    400bar
    ±0.5 %
    Analogue 4 → 20 mA
    Gas, Oil
    -
    -
    -
    -
    -
    -
    IS-3
    24 V
    -
    -
    -
    IP65
    -
    -
    -
    ifm electronic
    Relative
    0bar
    600bar
    ±0.5 %
    2x PNP/NPN-NO/NC
    Fluid
    G1/4
    -
    M12 Connector
    IO-LINK
    <3 (Minimum Switching Output) ms
    150 mA @ +60 °C, 200 mA @ +60 °C, 250 mA @ +40 °C
    -
    18 → 30 V dc
    IO-Link
    PBT GF20, PBT+PC GF30, PC, Stainless Steel
    -
    IP65, IP67
    +80°C
    -25°C
    -
    SICK
    Relative
    0bar
    250bar
    <±0.5 %
    2x PNP/NPN-NO/NC
    Air, Gas, Hydraulic Fluid, Liquid, Oil, Water
    G1/4
    -
    M12 Connector
    IO-LINK
    5 ms
    600 mA
    PBS Plus
    15 - 35 V
    IO-Link
    Stainless Steel/Plastic
    -
    IP67
    +85°C
    -20°C
    Threaded
    Gefran
    Absolute
    0bar
    400bar
    ±0.5 %
    -
    Air, Hydraulic Fluid, Oil
    G1/4
    0 → 10 V
    M12 Connector
    -
    1 ms
    -
    -
    15 → 30 V dc
    -
    Nylon, Stainless Steel
    -
    IP66
    +105°C
    -40°C
    -
    Telemecanique Sensors
    Differential
    3.2bar
    40bar
    = 1 %
    Analogue + discrete
    Air, Fresh Water, Hydraulic Oil, Refrigeration Fluid
    G1/4
    -
    -
    -
    -
    -
    -
    24 V dc
    -
    -
    -
    IP65, IP67
    -
    -
    -
    Telemecanique Sensors
    -
    0.07bar
    1.4bar
    -
    1 C/O
    Air, Hydraulic Oil, Non-Corrosive Fluid
    G1/4
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    IP65
    -
    -
    -
    WIKA
    Gauge
    0bar
    10bar
    ± 1 %
    SPDT
    -
    -
    -
    -
    -
    -
    -
    MW
    -
    -
    -
    -
    -
    -
    -
    -
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