The VARiON Plus 700 IQ H is YSI’s new Class I, Division 2 rated sensor for measuring ammonium and nitrate in hazardous locations. The VARiON is an online ion selective electrode probe and works directly with IQ SensorNet for process monitoring and control. IQ SensorNet is the only networked water-quality monitoring system available that can measure ammonium and nitrate in C1D2 rated areas, according to the manufacturer.

The VARiON is certified for use in C1D2 areas and conforms with NFPA Standard 820, groups A, B, C, D and T6 to reduce the potential of fire or explosion in hazardous locations in wastewater treatment facilities. The sensor is a reliable and safe option for measuring nitrate and ammonium in aeration basins that are not preceded by a primary settling tank. 

A low-maintenance sensor

The VARiON provides accurate, reliable data. Measure ammonium and nitrate plus one compensation electrode (potassium or chloride). Individually user-replaceable electrodes have a typical lifetime of 18 to 24 months and a one-year warranty, minimizing maintenance efforts and ownership costs. The VARiON reference system is very stable over long periods, according to the manufacturer.

The VARiON is compatible with IQ SensorNet, YSI’s network of online controllers and sensors designed for process monitoring and control. IQ SensorNet can now measure pH, ORP, ammonium, nitrate, potassium, chloride, dissolved oxygen (FDO H), TSS (ViSolid H) and temperature in C1D2 hazardous locations. IQ SensorNet continuously monitors water quality throughout the wastewater treatment process, increasing operational efficiency, lowering operating costs and improving performance.

YSI, a Xylem brand, offers lab, field and process monitoring instrumentation for municipal water and wastewater facilities. YSI’s IQ SensorNet continuously monitors water quality to help improve process control and operational efficiency. YSI lab and portable instruments provide accurate, reliable measurements.

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