Electro-Chemical Devices: Dissolved Oxygen Sensor

The unit’s FQ sensing element eliminates the need for frequent calibration or membrane replacement, and the sensor interfaces seamlessly with the company’s new T80 universal transmitter for a versatile cost-saving measurement solution. It is self-monitoring and stores calibration data within the sensor, which minimizes maintenance over long service intervals while providing stable and dependable measurement. Maximum error is less than 2%, repeatability is ±0.5% and resolution is 0.01 ppm or 0.01 percent saturation. The sensor operates over a wide measurement range with three different outputs from 0 to 20 mg/l (0-20 ppm), 0-200 percent saturation or 0-400 hPa (0-6 psi) and withstands pressures up to 10 bar (145 psi). Unlike amperometric sensors, the unit has no membranes to replace, no electrolytes to refill and no anode/cathode assemblies to service or replace. The only service required is the simple replacement of the sensor cap, which lasts two years or longer, and the occasional wiping of the sensor head with a damp rag.

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