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ABB launches colour-coded sensors for pH measurement

April 17, 2020  By P&PC Staff

ABB has launched a new range of colour-coded sensors for choosing and managing the optimal pH measurement solution.

The application driven designs are categorized into three groups: the entry-level 100 series for measurement in general process applications; the high-performance 500 series for harsh industrial applications; and the 700 series for specialist applications.

Digital and analog options are available, with the digital solution offering in-built diagnostics.


ABB’s EZLink plug-and-play technology links any of the new sensors to ABB’s digital transmitter range, including the recently launched AWT420. EZLink provides access to maintenance data meaning that users can replace sensors at the optimum time.

The new range incorporates ABB’s perpetual impedance diagnostics to detect electrode faults without the need for a solution earth. Another feature is the smart Reference Electrode Monitoring (REM) system, which provides early warning of electrode poisoning.

Optimal temperature compensation is assured by locating the pH electrode, reference electrode, and inbuilt temperature sensor together at the electrode tip. This provides a faster temperature response and better accuracy during calibration and in-process control applications.

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