Measurement and Testing

Digital Sensors Simplify Calibration and Maintenance

Nov 16 2017 Read 214 Times

When it comes to the maintenance of critical water chemistry equipment, analogue transmitters, sensors and analysers have been on the market for years. New, digital-based technology simplifies and reduces the overall frequency of analytical sensor calibration and maintenance. Intelligent Sensor Management (ISM®) is a process analytics platform that uses on-board microprocessors to provide worry-free measurement points and maximum confidence in your processes.


ISM sensors can be calibrated in any convenient location, under controlled conditions. They can then be stored until they’re required. Once connected to an ISM transmitter, the instrument automatically recognises the sensor type and its calibrated data, configuring itself without any operator involvement. Real-time predictive diagnostic tools give you advance warning of when servicing and maintenance are required, critically before sensor failure or loss of accuracy occurs.


METTLER TOLEDO Thornton’s ISM UniCond® sensors eliminate the need for different models of conductivity sensor, measuring ultrapure water with higher accuracy than analogue sensors. The same sensor can measure up to the range of seawater, meaning it can be used throughout a makeup water treatment system, as well as for all cycle chemistry monitoring points.


Switching from polarographic or amperometric membrane-based sensors to Thornton’s Optical Dissolved Oxygen (ODO) sensor can significantly reduce maintenance time, labour and costs.


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