Find out how to use a differential pressure sensor (dp sensor) to measure a partial vacuum as a positive pressure relative to full vacuum.
Absolute Pressure
Absolute pressure application support and product guides for measuring pressures with reference to a perfect vacuum.
Measuring absolute pressure using a dp sensor
Learn the method to convert a differential pressure (DP) sensor for absolute pressure measurement.
Absolute Unvented Reference Hydrostatic Liquid Level Sensors
Non-vented absolute range hydrostatic level sensors for measuring liquid level where it is not possible or practical to connect a vented gauge reference.
DCT531P RS485 Modbus RTU Flush Pressure Sensor
RS485 Modbus RTU serial interface pressure sensor with exposed all welded stainless steel 316L flush diaphragm in ranges from 100mb up to 40 bar gauge or absolute.
Titan TPTd Digital Pressure Sensor
This compact ceramic sensing diaphragm pressure sensor has a I2C (Inter-Integrated Circuit) or SPI (Serial Peripheral Interface) protocol digital interface for reading the measured pressure with ranges from 0…0.5 bar (7.25 psi) up to 600 bar ( 8700 psi).
SSPT Subsea Wet-Mateable Electrical Connector Pressure Sensor
This stainless steel ceramic sensing diaphragm based subsea connector pressure sensor provides a unamplified ratiometric millivolt output or an amplified analogue output signal corresponding to ranges from 0…1 bar (14.50 psi) up to 400 bar ( 5800 psi).
LMK457 Marine Approved Level Transmitter
Marine approved level transmitter with 4-20mA current loop output for shipbuilding with optional all CuNiFe construction for sea-water compatibility in ranges from 0.4 mH2O to 250mH2O gauge.
SLS-A Analogue Output Submersible Level Sensor
This 23 mm diameter stainless steel oil filled silicon piezoresistive sensing capsule based submersible level sensor provides unamplified ratiometric millivolt output or an amplified analogue output signal corresponding to ranges from 0…0.5 mWG (20 inWG) up to 100 mWG (328 ftWG).
SLS-D SDI-12 Digital Interface Submersible Level Sensor
This submersible level sensor has SDI-12 digital communications which provides the level and temperature readings as a serial output using the SDI-12 version 1.4 protocol.
Titan TPT Millivolt Output Pressure Transducer
This compact ceramic sensing diaphragm pressure transducer provides a millivolt strain gauge bridge output for ranges from 0…0.5 bar (7.25 psi) up to 600 bar ( 8700 psi).
Titan TPTa Amplified Analogue Output Pressure Sensor
This compact ceramic sensing diaphragm pressure transducer provides an amplified analogue output signal corresponding to ranges from 0…0.5 bar (7.25 psi) up to 600 bar ( 8700 psi).
What is the difference between vacuum and absolute pressure
Often you will see a measurement of vacuum pressure described as an absolute pressure reading, so is there any difference between the two?
Absolute – Barometric to Gauge Pressure Calculator
This tool will calculate the gauge pressure by subtracting the barometric pressure from the absolute referenced pressure reading you entered and convert any combination of pressure units for each pressure value.
Gauge + Barometric to Absolute Pressure Calculator
This tool will calculate the absolute pressure by adding together the gauge pressure and related barometric pressure reading you entered and convert any combination of pressure units for each pressure value.
Wind power barometric pressure visual monitor with alarm relay switches
Visual barometric pressure indicator and pressure sensor with opening and closing alarm relay switches for use in conjunction with safety shut down circuits for wind power installations.
NPSH 4-22 psia 4-20mA filtration pump suction port pressure sensor for water treatment
An absolute pressure sensor for water treatment pump chamber use to measure filtration pump NPSH pressure of freshwater over a range of 4 to 22 psi abs from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the submersible cable electrical connection.
Aircraft pneumatic unit test bench 100 psia range panel mount digital pressure meter
Digital display pressure meter for panel mounted use in a test panel on aircraft pneumatic unit test benches, capable of measuring 0 to 100 psi abs pressure with 0.2% accuracy and connected using a 1/4 NPT male fitting.
RF transmission line 20 psi absolute 0-4.5Vdc output air pressure sensor
An absolute pressure sensor for compressed air use to measure pressure of RF transmission line over a range of 0 to 20 psi abs from the G1/4 male process connection, and sending the corresponding 0-4.5Vdc signal through the DIN plug electrical connection.
Ferry hull draft monitoring 3 bar absolute 4-20mA output seawater pressure sensor
An absolute pressure sensor for ship use to measure seawater depth on a ferry hull draft monitoring system over a range of 0 to 3 bar abs from the G1 1/2" process connection, and sending the corresponding 4-20mA signal through the waterproof cable electrical connection.
Vacuum insulation 15 psi absolute range millivolt output pressure sensor for air extraction use
An absolute pressure sensor for vacuum insulation air extraction use to measure vacuum pressure of air over a range of 0 to 15 psi abs from the G1/4 male process connection, and sending the corresponding mV/V signal through the submersible cable electrical connection.
150 psi absolute IS 4-20mA oxygen clean pressure transducer for research use
A oxygen clean intrinsically safe absolute pressure transducer for research use to measure pressure of oxygen over a range of 0 to 150 psi abs from the 1/4 NPT male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.
3000 psia high accuracy 0-10Vdc out pressure sensor for leak checking pressurized tanks
A high accuracy absolute high range pressure sensor for pressurized tank leak testing use to measure pressure of freshwater over a range of 0 to 3,000 psi absolute from the 1/4 NPT male process connection, and sending the corresponding 0-10Vdc signal through the waterproof cable electrical connection.
20 bar absolute low response time 4-20mA output dynamic freshwater pressure sensor for research use
A low response time absolute pressure sensor for research use to measure pressure of freshwater over a range of 0 to 20 bar abs from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the M12 connector electrical connection.
40 bar absolute 0-20mA output air pressure sensor for pneumatic monitoring
An absolute pneumatic pressure monitoring sensor for compressed air use to measure pressure of air over a range of 0 to 40 bar abs from the 1/4 BSP P male process connection, and sending the corresponding 0-20mA signal through the weatherproof cable electrical connection.
30 psi absolute portable calibration data logging air pressure gauge with 1/4 NPT male fitting
Digital display pressure gauge for portable calibration use in air measurement applications, capable of measuring 0 to 30 psi abs pressure with 0.1% accuracy and connected using a 1/4 NPT male fitting. Also includes USB, logger, and data transfer software.
500 psi absolute range HART enabled 4-20mA output diesel pressure sensor for pipeline leak testing use
A HART coms enabled absolute pressure sensor for pipeline leak testing use to measure pressure of diesel over a range of 0 to 500 psi abs from the 1/2 NPT male process connection, and sending the corresponding 4-20mA signal through the mil-spec connector electrical connection.
10 bar absolute I2C interface air pressure sensor
An absolute digital pressure sensor for measuring the pressure of air over a range of 0 to 10 bar absolute from the G1/4 male process connection, and sending the corresponding I2C interface through the weatherproof cable gland electrical connection.
6 bar absolute 0-10V out high temperature freshwater pressure sensor for solar thermal systems
A hi-temp media 200°C/392°F max absolute pressure sensor for process control use on solar thermal system to measure pressure of freshwater over a range of 0 to 6 bar abs from the G1/2 male process connection, and sending the corresponding 0-10Vdc signal through the DIN plug electrical connection.
15 psi absolute range RS485 Modbus RTU protocol interface vacuum sensor for research use
A vacuum range absolute pressure sensor for research use to measure pressure of air over a range of 0 to 15 psi abs from the 1/4 NPT male process connection, and sending the corresponding RS485 Modbus RTU signal through the M12x1 plug electrical connection.
1000 mbar absolute vacuum range 0-10Vdc output air pressure sensor for research use
A high accuracy absolute pressure sensor for research use to measure vacuum pressure of air over a range of 6 to 1,000 mbar abs from the G1/4 male process connection, and sending the corresponding 0-10Vdc signal through the DIN plug electrical connection.
High temperature 4.0 bar absolute range 4-20mA output steam pressure sensor for sterilizing use
A high temperature protected absolute pressure sensor for steam sterilizing use to measure pressure of steam over a range of 0.0 to 4.0 bar abs from the 1/4 BSP P male process connection, and sending the corresponding 4-20mA signal through the Hirschman electrical connection.
400 bar high range 0-10Vdc output engine oil pressure sensor with snubber for hydraulic control use
A high range absolute pressure sensor for hydraulic control use to measure pressure of engine oil over a range of 0 to 400 bar abs from the 1/4 BSP P male process connection, and sending the corresponding 0-10Vdc signal through the DIN plug electrical connection.
5-18 psi absolute RS485 output air pressure sensor for flow monitoring density correction use
A high accuracy absolute range digital pressure sensor for flow monitoring use to measure pressure of air over a range of 5 to 18 psi abs from the 1/4 BSP P male process connection, and sending the corresponding RS485 signal through the waterproof cable electrical connection.
1 bar absolute strain gauge mV out pressure sensor for educational instrumentation
Economical corrosion resistant ceramic diaphragm pressure sensor for educational measurement instrumentation measuring over a 0-1 bar absolute pressure range and generating a strain gauge millivolt output signal.
2.5 bar absolute range 4 to 20 milliamps output ceramic diaphragm pressure sensor
Economical corrosion resistant ceramic diaphragm pressure sensor for measuring over a 2.5 bar absolute pressure range and generating a 4 to 20 milliamps output signal.
10 bar absolute 4-20mA natural gas pressure sensor for high temperature research use
A hi-temp media 150°C/302°F max absolute pressure sensor for research use to measure pressure of natural gas over a range of 0 to 10 bar abs from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.
550-1100mbar absolute 4-20mA high resolution air pressure sensor for environmental test chamber use
An absolute pressure sensor for environmental test chamber use to measure pressure of air over a range of 550 to 1100 mbar abs from the 1/4 NPT male process connection, and sending the corresponding 4-20mA signal through the integral cable electrical connection.
800mbar absolute range 4-20mA output high temperature protected OEM pressure sensor
High temperature protected OEM stainless steel diaphragm pressure sensor with semiconductor strain gauges for measuring over a 0 to 800 mbar absolute pressure range and generating a 4 to 20 milliamps output signal.
6 bar absolute range 4-20mA output high temperature epoxy resin pressure sensor for research use
A high viscosity fluid absolute pressure sensor with hi-temp media 150°C/302°F max protection for research use to measure pressure of epoxy resin over a range of 0 to 6 bar abs from the G1/2 male with flush diaphragm process connection, and sending the corresponding 4-20mA signal through the integral cable electrical connection.
10 metre range non-vented submersible absolute range pressure and barometric sensor
we need to measure water level from 0 to 10 metres with a submersible pressure sensor, but we are going to have difficulty in getting some of the sensors vented to atmosphere pressure.
500-1100 mbar absolute range 0-5 volts output barometric pressure sensor
Economical corrosion resistant ceramic diaphragm pressure sensor for measuring over a 500 to 1100 mbar absolute pressure range and generating a 0 to 5 volts output signal.
500-1100 mbar absolute 0-10Vdc out air pressure sensor for meteorological use
A high accuracy absolute pressure sensor for meteorological use to measure pressure of air over a range of 500 to 1100 mbar absolute from the 1/4 NPT male process connection, and sending the corresponding 0-10Vdc signal through the integral cable electrical connection.
1.6 bar absolute range 4-20mA output ceramic diaphragm pressure sensor
Economical corrosion resistant ceramic diaphragm pressure sensor for measuring over a 0 to 1.6 bar absolute pressure range and generating a 4 to 20 milliamps output signal.
100 psi triclamp absolute 0-10Vdc output air pressure sensor for leak testing use
An absolute pressure sensor for leak testing use to measure pressure of air over a range of 0 to 100 psi abs from the triclamp process connection, and sending the corresponding 0-10Vdc signal through the M12 connector electrical connection.
2 bar absolute range 4 -20 mA output submersible silicon diaphragm liquid level sensor
Low cost stainless steel 316L submersible liquid level sensor with silicon strain gauge technology for measuring over a 2 bar absolute hydrostatic pressure range and sending out a 4 to 20 milliamps signal.
10mH2O absolute 4-20mA marine approved seawater pressure sensor for bilge water leak testing use
A marine approved submersible absolute pressure sensor for bilge water leak testing use to measure pressure of seawater over a range of 0 to 10 mH2O abs from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the submersible electrical connection.
45 psi absolute range 4-20mA output natural gas pressure sensor for research use
An absolute pressure sensor for research use to measure pressure of natural gas over a range of 0 to 45 psi absolute from the 1/4 NPT male process connection, and sending the corresponding 4-20mA signal through the integral cable electrical connection.
30 bar absolute RS485 interface mineral hydraulic oil pressure sensor for material testing use
A high accuracy absolute pressure sensor for material testing use to measure pressure of mineral hydraulic oil over a range of 0 to 30 bar abs from the G1/4 male process connection, and sending the corresponding RS485 carried signal through the M12 connector electrical connection.
5 to 30 psi abs range 0-10Vdc output air pressure sensor for air compression use
A high accuracy absolute pressure sensor for air compression use to measure pressure of air over a range of 5 to 30 psi abs from the 1/4 NPT male process connection, and sending the corresponding 0-10Vdc signal through the integral cable electrical connection.
3000 psi absolute 0-20mA output mineral oil pressure sensor for hydraulic control use
An absolute high pressure sensor for hydraulic control use to measure pressure of mineral hydraulic oil over a range of 0 to 3,000 psi absolute from the G1/4 male process connection, and sending the corresponding 0-20mA signal through the M12 connector electrical connection.
3 MPa absolute range 0-5Vdc output nitrogen gas pressure sensor for aerospace testing use
An absolute pressure sensor for aerospace component testing use to measure pressure of nitrogen gas over a range of 0 to 3 MPa abs from the G1/4 male process connection, and sending the corresponding 0-5Vdc signal through the integral cable electrical connection.
50 psi absolute 0-5Vdc output natural gas pressure sensor for boiler control use
An absolute range pressure sensor for boiler control use to measure pressure of natural gas over a range of 0 to 50 psi abs from the 1/4 NPT male process connection, and sending the corresponding 0-5Vdc signal through the DIN plug electrical connection.
3 psig range 4-20 mA output BMS natural gas or propane heater pressure sensor
A low range gauge pressure sensor for building management use to measure pressure of natural gas or propane on building heaters over a range of 0 to 3 psi g from the 1/4 NPT male process connection, and sending the corresponding 4-20mA signal through the integral cable electrical connection.
50 kPa absolute vacuum air pressure gauge with 1/4 NPT male fitting
Absolute vacuum pressure gauge for portable use in air measurement applications, capable of measuring 0 to 50 kPa abs pressure with 1% accuracy and connected using a 1/4 NPT male fitting.
Cleaned oil contamination free 200bar absolute range 0-10V out pressure sensor
Economical corrosion resistant ceramic diaphragm pressure sensor, cleaned for oil contamination free use, for measuring over a 0-200 bar absolute pressure range and generating a 0 to 10 volts output signal.
75bar abs RS485 engine oil pressure sensor for power generation oem use
An absolute pressure sensor for power generation oem use to measure pressure of engine oil over a range of 0 to 75 bar abs from the G1/4 male process connection, and sending the corresponding RS485 signal through the M12 connector electrical connection.
Depression vacuum 1 bar absolute range 0-5V output automotive test pressure sensor
Economical corrosion resistant ceramic diaphragm pressure sensor for measuring vacuum depression over a 1 bar absolute pressure range on an automotive test rig and generating a 0 to 5 volts output signal.
150 psia range freshwater 0-5Vdc output pressure sensor for building management use
An absolute pressure sensor for building management use to measure pressure of freshwater over a range of 0 to 150 psi abs from the 1/2 NPT male process connection, and sending the corresponding 0-5Vdc signal through the integral cable electrical connection.
Robotic system air compression 100 psi abs 0-5Vdc output pressure sensor
A high accuracy absolute pressure sensor for air compression use on robotics systems to measure pressure of air over a range of 0 to 100 psi abs from the 1/4 NPT male process connection, and sending the corresponding 0-5Vdc signal through the DIN plug electrical connection.
100psia range 0-10Vdc output signal air pressure sensor for manufacturing use
An absolute pressure sensor for manufacturing use to measure pressure of air over a range of 0 to 100 psi abs from the 1/4 NPT male process connection, and sending the corresponding 0-10Vdc signal through the DIN plug electrical connection.
IWPT Wireless Battery Powered Pressure Sensor and Receiver
Wireless battery powered pressure sensor and receiver system for connecting pressure sensors without wires to a central wireless receiver which converts each received pressure signal channel to a 1-5Vdc, 4-20mA output, USB, Ethernet TCP, RS232 RTU, RS485 RTU or 2G 3G 4G mobile cellular network.
BMS water tank 6mH2Og range 0-10V out submersible level sensor
Low cost submersible water level sensor with ceramic thick film strain gauge technology for measuring the level of a water tank connected to a building management system, over a 0 to 6 mH2O gauge hydrostatic pressure range and sending out a 0 to 10 volts signal.
Outside HVAC 900-1100 mbar abs baro range 4-20mA signal pressure sensor
An absolute pressure sensor for hvac use to measure pressure of air over a range of 900 to 1,100 mbar abs from the G1/2 male process connection, and sending the corresponding 4-20mA signal through the field housing electrical connection.
Agricultural irrigation low price 50psia range 0.5-4.5V ratiometric output water pressure sensor
Agricultural irrigation water low price corrosion resistant ceramic diaphragm pressure sensor for measuring over a 0 to 50 psi absolute pressure range and generating a ratiometric 0.5 to 4.5 volts output signal.
Gas analyser 75-125 kPa absolute range 0.5-4.5V ratiometric output pressure sensor
Gas analyser ambient pressure compensation economical stainless steel diaphragm pressure sensor with semiconductor strain gauges for measuring over a 75 to 125 kPa absolute pressure range and generating a ratiometric 0.5 to 4.5 volts output signal.
1000 mmHg abs range air pressure gauge with 1/4 NPT male fitting
Digital pressure gauge for portable use in air measurement applications, capable of measuring 0-1000 mmHg abs pressure to 0.125% accuracy and connected using a 1/4 NPT male fitting. Also includes traceable calibration certificate.
18 bara range 0-5 volts output ceramic diaphragm pressure sensor
Economical corrosion resistant ceramic diaphragm pressure sensor for measuring over a 0 to 18 bar absolute pressure range and generating a 0 to 5 volts output signal.
300 psi absolute range 4-20 milliamps output pressure sensor
Pressure sensor for measuring over a 0 to 300 psi absolute pressure range and generating a 4 to 20 milliamps output signal.
15 psi absolute vacuum range 0-5 volts output pressure sensor
Vacuum range pressure sensor for measuring over a 0 to 15 psi absolute pressure range and generating a 0 to 5 volts output signal.
Gas sensors testing barometric pressure sensor with RS485 Modbus RTU interface
We are looking to make high accuracy barometric measurements to use in the testing of gas sensors in an indoor laboratory environment at room temperature.
400 mbar absolute (not relative) battery supplied vacuum sensing display
Battery supplied digital readout display for sensing the absolute pressure of a vacuum below 400 mbar.
750-1250mb absolute range OEM barometric pressure transmitter
4-20mA output low cost pressure transmitter for incorporating into oem equipment to measure over the atmospheric pressure range.
Barometric range 800-1100mb IECEx approved intrinsically safe pressure transmitter
Measure pressure of the ambient air pressure with this barometric scaled range pressure transmitter.
Hydrophone array submersible 200 meter seawater depth sensor
Submersible pressure sensor which can be connected at the end of our hydrophone cable to measure the water depth.
Air flow normalising calculation barometric pressure transmitter
This pressure transmitter is used to measure barometric pressure for the purpose of normalising air flow calculations.
Absolute Reference, Volts Signal Output Pressure Transducers
Absolute reference pressure transducers with high voltage output signals for measuring the total pressure a perfect vacuum pressure reference.
Absolute Reference Pressure Gauges
Absolute pressure gauges for measuring pressure relative to a perfect vacuum. Absolute reference pressure gauges are used in applications where a system pressure is not influenced by changes in atmospheric pressure.
Absolute Pressure Sensors
Find a pressure transducer or transmitter for measuring absolute pressures with a millivolt, amplified voltage, current loop or digital output.
Waterproof Absolute Pressure Sensors
Waterproof absolute pressure sensors with absolute reference ranges for monitoring underwater pipe pressures or water depth/level in applications where it is not possible or less practical to provide a vented reference for atmospheric pressure compensation.
Wind turbine USB PC logging pressure & temperature sensor
I need to log the atmospheric pressure and temperature on the roof of a Wind turbine via a USB interface & software for a Windows PC.
Load reading pressure gauge for benchtop hydraulic press
Digital output load reading pressure gauge for measuring the pressure generated by a benchtop hydraulic press and displaying readings in custom load units
Marine approved atmospheric pressure sensor
Atmospheric pressure sensor for ambient pressure measurement in marine applications, on board a ship and in the engine room.
Absolute Pressure Transmitters
Absolute pressure transmitters generate a 4mA output signal when the pressure corresponds to a perfect vacuum.
Vacuum digital gauge to measure 0 to 1000 mbar absolute
We have a need for a general vacuum digital gauge which can display 0-1000mbar vacuum as absolute readings.
IMSL IP68 Stainless Steel 316L Hydrostatic Pressure Sensor
Water resistant pressure sensor for measuring hydrostatic pressures in the range of 0-0.5 mWC up to 0-100 mWC.
Measuring steam pressure up to 10bar with analog/digital output
I am looking for an analog & digital type pressure sensor for use on steam temperatures from 0 to 200 degrees Celsius over 0 to 10 bar?
LEO Record (Ei) Pressure Data Logger
LEO Record combined digital manometer & pressure data logging instrument for recording pressures & temperatures that can store up to 57,000 readings.
LEX1 (Ei) High Accuracy Digital Pressure Gauge
High precision digital pressure gauge with an accuracy of 0.05% full scale in pressure ranges from 0…30 mbar up to 0…1000 bar.
1013 to 1400 mbar barometric pressure transmitter & readout
barometric pressure transmitter that can measure ambient air pressure from 1013-1400 mb in a chamber and provide a 4-20 mA output signal.
DMP320 0.5 msec Fast Response Pressure Sensor
High frequency response pressure sensor with a better than 0.5 millisecond response time and internal digital signal conditioning that samples readings at a rate of 10 kilohertz.
PGS40 Mid Pressure Calibration Hand Pump
PGS40 pneumatic hand pump for applying test and calibration pressures with precision from -0.96 up to 40 bar gauge.
5 to 20 psi absolute ambient 4 to 20 ma pressure transmitter
DMP331 can be custom scaled and calibrated during manufacture to your specified barometric range of 5 to 20 psi absolute.
500 kPa absolute intrinsically safe pressure transmitter
Intrinsically safe pressure transmitter, 0 to 500 kpa a, 1/2 BSP male, media temp –40 to 125°C, ATEX approval, stainless steel and output range 4-20ma
0.05 msec response time, 2 bar range pressure transducer
The IMP pressure transducer without any amplification electronics will provide a response time of around 23 microseconds (0.023 msec) for a 2 bar range.
300°C max temperature, 0 to 300 bar, high range pressure sensor
The 35X HTC can measure up to 300 bar (and higher if necessary) on media up to temperatures of 300 degC max.
180 degC pressure sensor for saturated steam up to 10 bar
A built-in cooling element allows the pressure sensor to be used on media temperatures up to 200 degC (FKM seal limit).
RS485 output pressure sensor to measure sea-water depth to 50 bar
digital pressure sensor with RS485 serial interface and front end wetted components made from Hastelloy C276 which is sea-water corrosion resistant.
SDI-12 interface, 2 bar absolute, submersible water level sensor
The S12C is a submersible level probe with a SDI-12 protocol signal interface and has the option to measure absolute pressure rather than venting to air pressure above the water surface.
60 psi / 4 bar Low Pressure Calibration Pump – ADT912
Set precise calibration air pressures from 95% vacuum up to 4 bar / 60 psi.
Pressure Calibrator for Pressure Transmitter Calibration – ADT672
The ADT672 series of pressure calibrators are precision digital pressure gauges with electrical measurement for pressure transmitter calibration