You may not be aware but nearly every pressure measurement device you are using has a positive or negative gauge reference.
Vacuum measurement product details and application guidance for measuring over a range of pressures below atmospheric pressure.
The most common type of pressure range for pressure measurement instrumentation is one which has a gauge reference. So if you want to measure vacuum pressure, it would be convenient to use a gauge pressure device which is the most widely available pressure range format.
Often you will see a measurement of vacuum pressure described as an absolute pressure reading, so is there any difference between the two?
This tool will calculate the absolute referenced vacuum pressure by subtracting the suction from the barometric pressure reading you entered and convert any combination of pressure units for each pressure value.
This tool will calculate the suction pressure by subtracting the vacuum pressure reading from the barometric pressure reading you entered and convert any combination of pressure units for each pressure value.
Pick out the vacuum or atmosphere pressure value you require from 1 to 1,000 newtons per square millimetre to determine the converted value in lbs/sq in units.
Pick out the vacuum or atmosphere pressure value you require from 1 to 200,000 newtons per square metre to determine the converted value in lbs/sq in units.
Pick out the high range pressure value you require from 100 to 100,000 lbs/sq in to determine the converted value in newtons per square millimetre units.
Pick out the vacuum or atmosphere pressure value you require from 0.01 to 20 lbs/sq in to determine the converted value in newtons per square metre units.
Pinpoint the pressure in torr pressure units from 1 to 1,000 to determine the value in bar units.
Pinpoint the pressure in millimetres of mercury column pressure units from 1 to 1,000 to determine the value in bar units.
Pinpoint the pressure in millibar pressure units from 1 to 2,000 to determine the value in bar.
Pinpoint the pressure in hectopascal pressure units from 1 to 2,000 to determine the value in bar.
Pinpoint the pressure in bar pressure units from 0.001 to 2 to determine the value in Torr pressure units.
Pinpoint the pressure in bar pressure units from 0.001 to 2 to determine the value in millimetres of mercury column.
Pinpoint the pressure in bar pressure units from 0.001 to 2 to determine the value in millibars.
Pinpoint the pressure in bar pressure units from 0.001 to 2 to determine the value in hectopascals.
Choose a vacuum pressure in millimeters of mercury column from 0.1 to 1,000 mmHg to cross reference the converted pressure in millimeters of water column.
Choose readings from 0 to 1000 millimetres of mercury column to convert them into inches of mercury column.
A hi-temp media 200°C/392°F max gauge pressure sensor for measuring vacuum in a sealed tank heated to 350 degrees F over a range of 0 to -30 inHg g from the G1/2 male process connection, and sending the corresponding 4-20mA signal through the field housing electrical connection.
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.
Digital display pressure gauge and logger for pipe mounted use in low relative vacuum measurement applications, capable of measuring 0 to -30 inches of mercury column g pressure with 0.1% accuracy and connected using a 1/4 NPT male fitting. Also includes USB interface, logging functionality and PC software.
Low cost combined vacuum and pressure sensor for measuring over a -1 to +5 bar relative pressure range and generating a 4 to 20 milliamps output signal.
Look up a vacuum conversion value for percentage of vacuum (% vac), millibar (mbar, mb), hectopascal (hPa), pounds per square inch (psi), inches of mercury (inHg), millimetres of mercury (mmHg) or Torr absolute vacuum units.
Positive and negative range pressure sensor for measuring liquid dispensing pressure over a -20 to +50 pounds per square inch gauge pressure range and generating a 0 to 10 volts output signal.
An intrinsically safe compound range pressure sensor for process control use to measure pressure of propane gas over a range of -1 to 20 bar g from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.
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.
Economical stainless steel diaphragm pressure sensor with semiconductor strain gauges for measuring over a 0 to -200 mbar negative gauge suction range and generating a 4 to 20 milliamps output signal.
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.
Wireless pressure measurement kit for production monitoring use with a -1barg, 2barg, 10barg range plus a 1/4 BSP male fitting. Each pressure reading is transmitted wirelessly to a five channel base receiver, where it is converted to a 1-5Vdc or 4-20mA analogue output signal.
A compound range differential pressure sensor for farming use to measure pressure of freshwater over a range of -1 to 6 bar diff on a 6 bar freshwater line from two G1/4 male process connections, and sending the corresponding RS485 Modbus RTU signal through the M12 connector electrical connection.
Digital display negative differential pressure gauge and sensor for use in vacuum air measurement applications, capable of measuring 0 to 20 kPa DP with 1% accuracy and connected using a 6.6 x 11 mm tube 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.
A bi-directional compound range pressure sensor for research use to measure vacuum and pressure of air over a range of -15 to 15 psi g from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.
Economical stainless steel diaphragm suction range pressure sensor with semiconductor strain gauges for measuring over a 0 to -250 mbar gauge pressure range and generating a 4 to 20 milliamps output signal.
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.
Economical stainless steel diaphragm pressure sensor with semiconductor strain gauges for measuring vacuum over a negative 500 to 0 mmH2O gauge pressure range and generating a 4 to 20 milliamps output signal.
We need a suitable gauge to use as a leak testing test set we are looking to build. We need to measure down to -10 mbar and monitor for 1 minute to ensure the leak rate is not greater than 1 mbar/minute.
Compound range pressure transmitter for monitoring under pressure down to -10 millibar gauge and an over pressure of up to 200 millibar, with an output scaled from 4 to 20 milliamps with 4mA = -10mbar, and 20mA = +200mbar.
Detect low vacuum leaks with this combined 4 to 20 milliamp current output sensor and digital display gauge over a vacuum of 0 to minus 30 inches of water column.
Vacuum range pressure sensor for measuring over a 0 to 15 psi absolute pressure range and generating a 0 to 5 volts output signal.
Vacuum suction sensor that can provide a digital readout and a switched contact when the pressure gets too high
Battery supplied digital readout display for sensing the absolute pressure of a vacuum below 400 mbar.
Combined digital vacuum gauge and 0 to 10 volts analogue output for measuring from 0 to -30 inHg gauge pressure.
Precision vacuum pump and gauge tester for verifying the vacuum set-points of sensors connected to a control system.
The DPS 300 is a low range HVAC differential pressure sensor for measuring pressure drops across air filters and airflow through and between ventilation ducts. The lowest possible pressure range is 0…100 pascals and the highest is 0…1000 millibars. User switchable 2 or 3 pressure ranges and volts or current output are included with most standard configurations.
Monitor the suction pressure at the top of a biogas vertical extraction well in a landfill site.
Differential pressure sensor to measure the differential pressure between the inlet and outlet of a vacuum pump.
These voltage output transducers will provide a linear signal of a few volts that is directly proportional to a specified vacuum range.
Vacuum range gauges for measuring absolute vacuum or suction pressures which can be permanently installed or used as a test gauge.
Vacuum data loggers for recording negative suction pressure or absolute pressure below atmospheric pressure. Log and store vacuum measurements for printing test reports or analysing process trends.
Vacuum pressure transmitter to measure the suction intake of a lobe pump.
Choose vacuum pressure transmitters for measurements over the low vacuum range of 25 to 760 Torr, using a absolute or negative gauge reference vacuum range.
We have a need for a general vacuum digital gauge which can display 0-1000mbar vacuum as absolute readings.
LEO Record combined digital manometer & pressure data logging instrument for recording pressures & temperatures that can store up to 57,000 readings.
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.
LEO 2 battery powered digital manometer with pressure ranges from -1 to 3 bar up to 700 bar with an accuracy of 0.1% full scale with 6 pressure units, zero tare & peak hold display functions and optional ATEX approval for intrinsic safety.
I would like to measure a differential pressure of 0 to 25 mbar in a vacuum of < 0.2 bar absolute pressure.
The LEO Record will log both vacuum and positive pressure. The recorder software will converts recorded data file to .txt file to import into spreadsheet.
PGS40 pneumatic hand pump for applying test and calibration pressures with precision from -0.96 up to 40 bar gauge.
DMP320 which has a high sampling rate of 10 kHz so you will easily resolve the dynamic change characteristic over 0 to -200 psf within the 8sec window.
LEX1 high accuracy digital pressure gauge with a +/-300 mbar gauge pressure range for measuring low gas/liquid pressures and vacuums to a high accuracy
Precision pressure hand pump with a range of -0.9 bar to 40 bar for setting vacuum and gauge pressure measurements.
Set precise calibration air pressures from 95% vacuum up to 4 bar / 60 psi.
DMP343 is a capable of measuring a 40 millibar negative pressure with a 4-20mA scaling over 0 to -40 mbar.
Pressure transducer with an output voltage of 1-5V, able to withstand up to 150 C on the pressure side
Compound vacuum and pressure transmitter with HART compliant 4-20mA analog output and insertion type, bottom mounted, 1/2 NPT male process connection
I am interested in monitoring vacuum on a pipeline in the field with a portable data logger.
I am looking for a digital vacuum recorder for a vacuum drying pilot process. We would suggest the LEO Record which can be used for recording vacuum pressures over a 0 to 1 bar absolute or a 0 to -1 bar negative gauge measurement range. LEO Record Pressure Data Logger Pressure Range: -1 to 3 […]
DMP343 pneumatic pressure sensor for measuring very low range pressures on pneumatic control systems, heating, ventilation and air conditioning systems (HVAC) .
Three in one electronic pressure switch, digital pressure gauge and pressure sensor with pressure ranges from 100 mbar up to 600 bar (1.5 to 9000 psi).
Versatile low price pressure sensor with a wide selection of electrical and mechanical options for customisation.
Ultra low differential pressure transmitter for HVAC applications with 4-20mA current loop or amplified voltage output signal in pressure ranges from 0.1 mb up to 1 bar differential.
High precision pressure transmitter with an accuracy of 0.1%FS BSL NLHR and digitally adjustable pressure ranges from 400mb up to 40 bar gauge & absolute.
Low cost sensor for measuring small pressure ranges from 0-50 mbar (10 inH2O) to 0-1000 mbar (15 psi) of liquids or gases.
Negative Gauge Pressure is the difference in pressure between any vacuum and atmospheric pressure. The maximum possible negative gauge pressure is always limited by the current ambient atmospheric pressure, which constantly varies, but is typically around 1 bar absolute.
Suction pressure is a negative difference in pressure generated between two points which draws a gas or a liquid from a higher to a lower pressure state.
This guide provides an overview of measuring vacuum pressure including suggested vacuum measurement products and question & answers.
Pressure transmitter with Marine type approvals and a compound pressure range of -1000 to +3000 mWG.
The Baroli 05 pressure gauge can be supplied with a negative gauge vacuum range and display the pressure in millimetres of mercury (mmHg) pressure units.
Vacuum logger with ATEX hazardous area approval and flush diaphragm to monitor the vacuum supplied to a vacuum sewer system from a distant vacuum pump station.
We are looking to establish negative room pressure inside each of five interior zones to eliminate the spread of dust. The rooms will be sealed and each one will have an air scrubber vented to an adjacent room. We will need to monitor the pressure difference inside and outside the protected area to ensure a […]
Vacuum differential transducer for using with a variable frequency drive to control vacuum air pressures down to 60 kilopascals (kPa). This differential transducer is easily adapted for measuring negative vacuum pressures by connecting the negative (-) port to the vacuum air pressure and the positive (+) port to the reference ambient pressure. DMD341 Vacuum […]
Pressure transmitter with a 0 to minus 2000 pascal pressure range and 2 wire 4 to 20 mA output signal. DMP343 Low Range Pressure Sensor Pressure Range: 0 to minus 20 mbar (-2000 Pa) gauge Output Signal: 4-20mA (2 wire) Electrical Connection: DIN43650A plug IP65 Pressure Connection: G1/2 DIN 3852 male
Intrinsically safe manometer which can read from a few mbar absolute to atmospheric pressure for investigating vacuum leaks. DM01 Multi-Range High Accuracy Pressure Gauge Sensor Module 1: 1 bar (14.5 psi) absolute Sensor Module 3: Not required Process Connection: G1/4 DIN3852 male ATEX IS Approval: Yes Calibration Certificate: Basic cal report (standard)
Negative air pressure transmitter with a loop powered 4-20mA signal to monitor vacuum in an air scrubber system down to minus 10 inH2o compared to atmosphere.
HART enabled 4-20mA vacuum transmitter to monitor over the range of -1 to 0 bar with a 1/2″ BSP thread process connector. XMPi HART Vacuum Transmitter Pressure Range: -1 to +1 bar gauge Factory Set Scaling: -1 to 0 bar gauge Electronics Housing: Aluminium die cast Integrated Digital Indicator: Yes Pressure Connection: G1/2 male DIN3852 […]
Vacuum transmitter with flush mount thread connection for monitoring 0 to -1 bar full vacuum. This transmitters has flush stainless steel 316L diaphragm for applications where mounted devices should not introduce hidden spaces which might slow the removal of product or contaminant materials. DMP331P Flush Mountable Pressure Transmitter Pressure Range: -1 to 0 bar […]
Differential pressure transmitter with a signal & alarm warning output for measuring a compound scale from a vacuum of -2.5mbar to a pressure of 2.5mbar.
Cost effective pressure transducers to connect to data logger for diesel engine testing. These transducers can be used to measure the pressures of air, diesel, coolant and oil for testing purposes. The pressure transducers will accept a 5V excitation voltage and will produce a 0.5-4.5V out. IMP Low Cost Pressure Transducer Datum: Gauge (G) Pressure […]
Compound range transmitter for sensing pressure from -760 mm of mercury vacuum to 20 kilograms per sq cm positive pressure with HART communication. XMPi Compound HART Pressure Transmitter Pressure Range: -1 to +20 bar gauge Scaled Pressure Range: -760mmHg to +20 kg/cm² Electronics Housing: Aluminium die cast (standard) Pressure Connection: 1/2 NPT male Diaphragm Material: Stainless […]
Pressure transducer for use in vacuum chamber to measure vacuum pressure from 0 to -1 bar to conduct vacuum leak test on sterilising chamber.
Logging pressure gauge with dual range pressure sensor modules for measuring moist air from -10 psi up to 0 psi vacuum and water from 0 to 50 psi.
Suction pressure sensor for dairy milking machine equipment with hygienic tri clamp connection for measuring 0 to minus 90 kilopascals vacuum pressure.
Compound range ATEX pressure sensor for measuring -1 to +10 bar gauge in a hazardous zone.
Vacuum pressure sensor that will measure the vacuum pressure of a dredger suction pipe pump inlet.
Vacuum pressure transmitter for vacuum conveying systems to measure 0 to -500 mbar vacuum.
Digital vacuum gauge for measuring over the 0 to 760mmHg (millimetres of Mercury) absolute pressure range.
Absolute vacuum range pressure sensor for measuring from 0 to 1 bar pressure with a high resolution 0 to 10 volt output.
The ADT901 low pressure calibration pump is a hand operated pressure pump designed to generate pressures over +/-6 psi (+/-0.4 bar)