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New sensor ideal for ultrapure water applications

Posted: Friday 27^th November 2009

The Orbisphere 1100 series optical dissolved oxygen sensor from HACH LANGE is providing major advantages to international service company Serco in the course of its work to solve corrosion problems within the UK power generation sector. It has helped reduce maintenance time and service requirements to improve the overall monitoring efficiency of testing carried out under plant conditions.

The sensor is used to monitor feedwater for the determination of dissolved oxygen levels in ultra pure water, in this instance, primary coolant in pressurised water reactors.

Employing luminescent measurement technology, with no membranes or electrolyte, the solid state sensor head of the Orbisphere 1100 requires minimal user intervention. It is quick and easy to calibrate, saving on maintenance costs as a result.

Chris Auener, Structural Integrity Analyst at Serco, said: “The sub 10ppb accuracy of the system reduces the inaccuracy of the measurement allowing previously unseen readings."