• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer
SensorsONE

SensorsONE

Measurement Instrumentation Products

  • Products
  • Tools
  • Contact

at – Technical Atmosphere Pressure Unit

Technical Atmosphere is similar although not the same value as the standard atmosphere pressure unit (atm) and both have been used historically to relate a pressure value to multiples of atmospheric pressure. 1 Technical Atmosphere is defined as being exactly equal to 98,066.5 pascals.

The at pressure unit can be occasionally found on water resistant watches to indicate the maximum depth rating, particularly on European brands. However the unit has been largely phased out and the average atmospheric pressure is now mostly defined as 1 atm (101325 Pa) for weather and aviation or more coomonly 1 bar (100,000 Pa) for industrial and general purposes.

Technical Atmosphere is some times written as ‘ata’ which is the short way of writing ‘at absolute’.

Equivalent values for 1 at in other pressure units can be found in the list below.

To convert any pressure unit into Technical Atmospheres click on the relevant unit below.

Use the pressure converter page to convert many different values to and from technical atmosphere units.

Atmospheric pressure measurement products
  • 500-1100 mbar absolute 0-10Vdc out air pressure sensor for meteorological use
  • 5-18 psi absolute RS485 output air pressure sensor for flow monitoring density correction use
  • Ex rated ambient pressure sensor with 800-1100 mbar range
  • Barometric transducer with 23-34 inHg input range and 0-5Vdc output range

Request info on atmospheric pressure measurement products for your application.

Contents

  • Conversion Factors
  • Help
    • ata meaning
    • at conversion to kg/cm2
    • 325 at to psi

Conversion Factors

  • 0.980665 bar
  • 14.2233 psi
  • 980.665 mbar
  • 98066.5 N/m²
  • 98066.5 Pa
  • 980.665 hPa
  • 98.0665 kPa
  • 0.0980665 MPa
  • 1 kg/cm²
  • 10000 mmH2O 4°C (39.2°F)
  • 1000 cmH2O 4°C (39.2°F)
  • 10 mH2O 4°C (39.2°F)
  • 393.701 inH2O 4°C (39.2°F)
  • 32.8084 ftH2O 4°C (39.2°F)
  • 735.559 mmHg 0°C (32°F)
  • 73.5559 cmHg 0°C (32°F)
  • 28.9590 inHg 0°C (32°F)
  • 735.559 Torr
  • 735559 mTorr
  • 0.96784 atm
  • 1 at
  • 980665 dyn/cm²
  • 227.573 oz/in²
  • 735559 µHg 0°C (32°F)
  • 0.00634971 tsi (uk, long)
  • 0.00711167 tsi (usa, short)
  • 1.02408 tsf (usa, short)
  • 2048.16 psf
  • 1000 g/cm²

Please note that the conversion factors above are accurate to 6 significant figures.

Atmospheric pressure measurement products
  • Atmospheric range for 4-20mA pressure sensor
  • 500 to 1100 hPa absolute USB interface pressure sensor
  • 500 to 1200 millibar atmospheric pressure logger with RS232 interface
  • 750-1250mb absolute range OEM barometric pressure transmitter

Request info on atmospheric pressure measurement products for your application.

Help

ata meaning

What is meaning of “ata” and how does it convert into kgf/sq.cm?

ata means a pressure reading in technical atmosphere units (at) which are referenced to a perfect vacuum (absolute).

at conversion to kg/cm2

Both units equal the same: 1 ata = 1 technical atmosphere absolute = 1 kgf/cm² absolute

1 ata should not be confused with 1 atm which is a slightly different value.

325 at to psi

What is the conversion from 325 at into psi?

The conversion is 325 at = 4622.58657 psi

0-650at to psi scale

Atmospheric pressure measurement products
  • Gas sensors testing barometric pressure sensor with RS485 Modbus RTU interface
  • 5-18 psi absolute RS485 output air pressure sensor for flow monitoring density correction use
  • SIL 2 certified 800 to 1200 mbar abs range air pressure transmitter
  • 500-1100 mbar absolute range 0-5 volts output barometric pressure sensor

Request info on atmospheric pressure measurement products for your application.

Measurement Unit Related Terms

More pages related to measurement unit technical terms.

  • atm – Standard Atmosphere Pressure Unit
  • bar Pressure Unit
  • cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
  • cmHg – Centimetres of Mercury at 0 deg C Pressure Unit
  • daPa – Dekapascal Pressure Unit
  • dyn/cm² – Dyne per Square Centimetre Pressure Unit
  • ftH2O – Feet of Water Column at 4 deg C Pressure Unit
  • g – Acceleration due to Gravity
  • g/cm² – Grams per Square Centimetre Pressure Unit
  • hPa – Hectopascal Pressure Unit
  • inH2O – Inches of Water Column at 4 deg C Pressure Unit
  • inHg – Inches of Mercury at 0 degrees C Pressure Unit
  • kg/cm² – Kilogram per Square Centimetre Pressure Unit
  • kg/mm² – Kilogram per Square Millimetre Pressure Unit
  • kPa – Kilopascal Pressure Unit
  • ksi – Kilopounds per Square Inch Pressure Unit
  • mbar – Millibar Pressure Unit
  • mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
  • mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
  • mmHg – Millimetres of Mercury at 0 deg C Pressure Unit
  • MPa – Megapascal Pressure Unit
  • mPa – Millipascal Pressure Unit
  • mTorr – Millitorr Pressure Unit
  • N/cm² – Newton per Square Centimetre Pressure Unit
  • N/m2 – Newton per Square Metre Pressure Unit
  • N/mm² – Newton per Square Millimetre Pressure Unit
  • oz/in² – Ounce per Square Inch Pressure Unit
  • Pa – Pascal Pressure Unit
  • Pressure
  • Pressure Units
  • psf – Pounds per Square Foot Pressure Unit
  • psi – Pounds per Square Inch Pressure Unit
  • Specific Gravity
  • Torr Pressure Unit
  • tsf – Tons per Square Foot (USA, Short) Pressure Unit
  • tsi – Tons per Square Inch (UK, Long) Pressure Unit
  • tsi – Tons per Square Inch (USA, Short) Pressure Unit
  • Water Density
  • µHg – Micron of Mercury at 0 deg C Pressure Unit

Primary Sidebar

Measure & Log Pressure On Your Computer

Measure and record pressure in bar, mbar, psi, MPa, Pa, mH2O, mmHg, atm or kg/cm2 using this USB pressure sensor and logging kit with your computer
Measure and record pressure in bar, mbar, psi, MPa, Pa, mH2O, mmHg, atm or kg/cm2 using this USB Pressure Sensor and Logging Kit with your computer

Pressure Sensor Specifier

Specify a pressure sensor
Select your pressure sensor requirements

Digital Pressure Gauge Specifier

Specify a digital pressure gauge
Select your digital pressure gauge requirements

Product Selection Guides

  • Pressure Transmitters
  • Pressure Transducers
  • Liquid Level Sensors
  • Digital Pressure Gauges
  • Data Loggers

Application Selection Guides

  • Vacuum
  • Submersible
  • Low Pressure Range
  • Leak Testing
  • High Frequency Response
  • Dual Temperature and Pressure
  • Barometric Pressure

Help Guides

  • Reduce calibration costs of analogue pressure gauges
  • Measuring the difference in air pressure between rooms
  • How to get a 10 volt signal from a 4-20mA output pressure sensor
  • How to Connect a 4-20mA Current Loop Pressure Transmitter
  • Determining the hydrostatic pressure range for a tank level sensor
  • Choosing PVC, PUR, FEP and TPE cable types

Online Measurement Tools

  • Temperature Transmitter 4-20mA Current Output Calculator
  • Pressure Transmitter 4-20mA Current Output Calculator
  • Pressure Transducer 1-5V Voltage Output Calculator
  • Pressure Converter
  • Measurement Reading to 4-20mA Signal Converter
  • Liquid Depth/Level to Hydrostatic Pressure Calculator
  • Input to Output Measurement Reading Converter
  • Force & Area to Pressure Calculator
  • Density to Specific Gravity Calculator

Product Enquiry

Send us your enquiry for a product associated with this at – Technical Atmosphere Pressure Unit page, and get assistance with selecting a product for your application.

Email Your Enquiry

enquiries@sensorsone.com

Footer

By clicking "OK" or continuing to use this website you are providing your consent to use cookies as described in our Privacy Policy

© 2021 SensorsONE Ltd, all rights reserved

  • Home
  • Legal
  • Contact