The ST-722 SS is an industrial-grade, inline ultra-low conductivity sensor designed for pure & ultra-pure water applications. It can be used for ultra-low conductivity measurement of pure water, ultra-pure water and deionized water including, suitable for Data Centre CDU cooling water. Easy Installation into 3/4″ FNPT Standard Pipe Tee or Direct Insert into Pyxis Lab Tee System The Latest Short Pulse Type Detection Method Technology Built-In Temperature Sensor with Automatic Compensation Front-End Fully Digital Detection Technology Accurate & Stable Measurement with Ultra-Low Drift Built-In Transmitter without Pre-Amplifier or Meter Head (2) 4-20mA Isolated Analog & RS-485 Modbus Digital Outputs Stainless Steel Housing Suitable for Harsh Environments Pollution-Resistant & Anti-Interference Design Specially Designed Electrode Greatly Improves the Long-Term Stability of the Sensor Minimal Maintenance Required Ultra-Low Detection 0.02µS/cm (50MΩ Resistivity)