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Edward Lowton
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MCERTS for pH measurement
20 March 2014
ABB has achieved MCERTS certification for its AX400 pH measurement system. Tested in a field trial over a period of nine months on an effluent discharge at Pembroke Power Station, the AX400, coupled with ABB’s 7650, 7651, 7660 pH sensors, successfully demonstrated its suitability for use in treated wastewater, untreated wastewater and receiving water applications.
The achievement of MCERTS certification means that ABB’s AX400 pH measurement systems can be used in applications such as the power industry and potable water treatment.
The measurement of pH and Redox (ORP) in high purity water applications in power plants requires a number of essential elements to achieve accurate and stable readings. These include a stainless steel flowcell to minimise static effects and a reservoir-fed reference junction that overcomes KCI depletion and blockage to ensure a stable junction potential and simple reference junction replacement for low-cost maintenance.
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