• New range of colour-coded sensors makes it easy to choose and manage optimal pH measurement solutions

Water/Wastewater

New range of colour-coded sensors makes it easy to choose and manage optimal pH measurement solutions

Nov 27 2020

ABB have just launched a range of pH sensors with application driven designs that are categorised into three groups: the entry-level 100 series for cost-effective measurement in general process applications; the high-performance 500 series for harsh industrial applications; and the 700 series for specialist applications. This makes it simple for users to select, own, and operate the pH sensors best suited to their needs. 

Digital and analogue options are available, with the digital solution offering the greatest benefits because it provides advanced in-built diagnostics – the most effective way of ensuring constant high-quality water. 

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 enables faster installation and commissioning and provides easy access to maintenance data meaning that users can replace sensors at the optimum time, saving money without risking process control.

Designed for long life to maximize process uptime, this new range incorporates innovations including 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.

To ensure accuracy and reliability in even in the harshest of processes, the new sensors are offered with ABB’s bespoke range of sensor glasses, specifically designed to meet requirements such as high pH levels, low or high temperatures, or the need for high acid resistance. General-purpose glass is offered for a range of aqueous media. 


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