Multivariable transmitter
266CRH

The multivariable transmitters in the 266CRH are used for differential pressure flow measurements. Apart from pressure- and / or temperature-dependent changes to the density of the fluid, the parameters such as the discharge coefficient, thermal expansion of pipelines and primary device and the Reynolds number are also corrected. It can also be used for DP level measurement if density compensation is necessary due to process temperature changes. This could make any level measurement much more reliable.
In addition to high precision, the multivariable 266 also offers the advantage that only a single device needs to be used for the measuring point instead of several transmitters and a flow calculator.

• Base accuracy: ± 0.075 %
• Reduced process penetrations save money and reduce the risk of leakage
• High static working pressure option (41 MPa, 6000 psi) for power plants, pipelines or oil and gas production
• Local operation with LCD with TTG (Through The Glass) technology without the need of opening the housing
• Integrated totalizers and in addition a binary output as pulse or frequency output for activating external totalizers
• Exchangeable electronics with automatic configuration capability
• Flexible process connections and high selection of corrosion resistant material due to all welded diaphragm seals

ABB’s freedom of choice offers the right driver for the major fieldbus protocols suitable for ABB devices.
The version matrix document shows for each protocol the software revision that’s compatible to the hardware and firmware revision of the device.

• Read first
  – Software/hardware revisions: Version matrix

Software and documentation:

• HART
  – Software: DTM, EDD
  – Driver description: Supplementary information
• Modbus
  – Software: DTM
  – Driver description: Supplementary information

Stand-alone tool:
ABB offers software tools that use the listed drivers above for your device configuration and monitoring requirements. Read more & download

Fieldbus solutions:
ABB offers a wide range of fieldbus products, accessories, tools, support documentation, applications and news. Read more

ABB offer a full range of services to support you and your processes, including:

• Product commissioning
• Maintenance and field services
• Repairs
• Spare parts services
• Training

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