Pressure measurement made easy

ABB Measurement & Analytics

Pressure measurement made easy
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Pressure measurement technology in the process industry

What is the right pressure transmitter for me? How do the model variants differ?

We would like to support you with our expertise in your search for the right pressure sensor. Which product properties need to be determined? What do you need to consider?

The pressure to be measured must be determined first. You can find an explanation of the individual pressure types via the selection.

Absolute pressure, absolute pressure pabs:
Is the pressure compared to the pressure in an absolute vacuum.

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Absolutdrucke
Atmospheric pressure Pamb:

Is the pressure that the earth's atmosphere exerts on the earth's surface. Measured at sea level, the annual average is 1013.25 hPa.

Overpressure / relative pressure Pe:

Is the pressure compared to atmospheric pressure Pamb. The overpressure Pe can therefore assume positive or negative values.

Differenzdruck
Differential pressure / pressure difference ΔP:

Is the difference between two pressures, differential pressure ΔP = Pabs1 - Pabs2.

 

Operating data of the measurement

Which medium is involved? Which pressure range must be covered? What are the temperatures of the medium and the environment?

These parameters are decisive for the selection of the design.

Designs

  • Direct mounting
  • Diaphragm seals
  • Diaphragm seals with capillary
  • Electronic diaphragm seals

Mechanical data:

How is the pressure measurement connected to the process, the pipe or the tank? There is a wide range of versions to suit the application:

  • Screw connection
  • Flange
  • Hygienic
  • Variable

The membrane material is in direct contact with the medium and must therefore be suitable for this medium.

Which filling liquid can be used?

Which output signal is required?

  • 4-20 mA
  • Hart Communication
  • Profibus

Are there requirements with regard to:
  • Explosion protection
  • Display on the device
  • Assembly aid
  • Special material / acceptance certificates
Pressure whitepaper
Download white paper: Applying remote seal, isolation diaphragms between process fluids and transmitters

The most practical method of protecting the transmitter from the process fluid is the use of remote seals. Learn how this protection can be achieved in our white paper.

Download white paper

Measuring methods at a glance

 

Absolute pressure transmitters

PAX100
Basic design: PAX100

Robust stainless steel housing, measuring accuracy up to 0.1%, easily readable display, H-shield membrane for pressure measurement in hydrogen applications

Model variants also available with special process connections for food, cosmetics, the paper industry and diaphragm seals.

Standard design: 266 NXH
Standard design: 266 NXH

Measuring accuracy up to 0.075, versatile device with extensive variants, option for wireless Hart Communication and SIL certification, operation through the glass pane. Process connection directly or via various diaphragm seal variants

For the chemical industry, oil & gas, energy industry and power plants, steel and metal industry, water management

High-end design: 266AXT:
High-end design: 266AXT

Particularly high measuring accuracy up to 0.04%, optionally 0.025%, versatile device with extensive variants, measuring ranges 0 - 60 mbar to 0 - 600 bar, process connection directly or via various diaphragm seals

Can be used for the entire process industry.

All versions follow the standardized ABB operating concept across all products.

Further details can be found on our product page.

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Gauge pressure transmitters

PAX100
Basic design: PGX100

Robust stainless steel housing, measuring accuracy up to 0.1%, easily readable display, H-shield membrane for pressure measurement in hydrogen applications

Model variants also available with special process connections for food, cosmetics, the paper industry and diaphragm seals.

Standard design: 266 NXH
Standard design: 266 HXH

Measuring accuracy up to 0.075, versatile device with extensive variants, option for wireless Hart Communication and SIL certification, operation through the glass pane. Process connection directly or via various diaphragm seal variants

For the chemical industry, oil & gas, energy industry and power plants, steel and metal industry, water management

High-end design: 266AXT:
High-end design: 266GXT

Particularly high measuring accuracy 0.04%, optionally 0.025%, versatile device with extensive variants, measuring ranges 0 - 60 mbar to 0 - 600 bar, process connection directly or via various diaphragm seals

Can be used for the entire process industry.

Further details can be found on our product page.

Would you like more information or are you interested in this product?

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Differential pressure and level as well as flow rate with differential pressure sensor

Standard design: 266DXH
Standard design: 266DXH

High measuring accuracy up to 0.06%, various process connections and diaphragm seals with capillaries. Option for wireless Hart Communication, 0 - 10 mbar to 0 - 160 bar

High-end design: 266MXT
High-end design: 266MXT

Particularly high measuring accuracy 0.04%, optionally 0.025%, measuring ranges 0 - 10 mbar to 0 - 100 bar

Electronic diaphragm seals DDS: 266HXH,GXT
Electronic diaphragm seals DDS: 266HXH,GXT

Differential pressure measurement via two connected overpressure measurements.

Increased measuring accuracy compared to classic installation, minimized response time, minimized temperature influence, extremely wide measuring ranges up to 1050 bar, easy installation and commissioning.

Applications include level measurement in chemical tanks, the oil industry and refineries. Advantages can also be used for flue gas measurement or monitoring steam pressures.

The variants are used for pressure measurement in all sectors and industries of the process industry.

Further details can be found on our product page.

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Multivariable transmitters

Transmitter for recording differential pressure, absolute pressure and temperature in one device.

In combination with differential pressure sensors for mass flow measurement or pressure and temperature-compensated flow measurement of gases and steam. For level measurement with density compensation or for level measurement of steam boilers.

266jxh
Multivariable transmitters: 266JXH Measuring accuracy 0.075 %

Multivariable transmitters: 266JXT
Increased measuring accuracy up to 0.04 %

Used to measure differential pressure, absolute pressure and temperature with one measuring device and minimized installation effort.

Multivariable transmitters with calculation functionality: 266CXH Measuring accuracy 0.075 %
Multivariable transmitters with calculation functionality: 266CXH Measuring accuracy 0.075 %

Multivariable transmitters: 266JXT
Increased measuring accuracy 0.04 %

These devices are used in combination with differential pressure sensors for mass flow measurement or condition-corrected standard volume flow measurement. Changes in pressure and temperature can be corrected using the integrated calculation functionality.

Further details can be found on our product page.

Would you like more information or are you interested in this product?

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