Dissolved Oxygen Datasheets linked below. For user manuals and other documentation, send your request to sales@pcspl.com.au Chemitec S423C-OPT Optical Oxygen and Temperature Measurement [...] Expand Range 0...20 ppm (mg/l) Output 4-20mA or Modbus RTU Fluorescence optical method of measurement Sensor Max. Pressure 4 bar Installation Submersible or Sample Flow Cell or In-Line 1" BSPP Rear Thread with 10m Cable PVC or SS body For waste and raw waters Data Sheets