Continuous SO2 Gas Analyzer Principle Electrochemical, TCD (Thermal Conductivity) , NDIR (Non Dispersive Infrared ), Zirconium and Paramagnetic Range: PPM, Mg/M3 Resolution 0.1 Unit or 1 Unit (Application based) Sampling Method Auto Suction Gas Sampling Probe Dia 8mm SS 316 Display 320 X 264 Graphic LCD Alarm Relay Contact NO NC Analog Output 4-20mA Digital Out Put RS 232, RS 485 and Modbus Communication Protocol Power Source 230VAC Accuracy /2% Response Time Data Storage 5000 or 10000 Computer Interface RS 232, USB, RS485 Sensor Life 2-3 Years Environmental Temperature 15degree Celsius Humidity < 85%RH Atmosphere Pressure 86- 106Kpa Dimension in mm 430 (W) X 150(H) X 250(D) Weight 2.5 KG Warranty One Year