The on-line monitoring and pretreatment system is applied to 24-hour continuous on-line monitoring of on-site gas concentration. It is equipped with 7-inch high-definition color screen to display on-site concentration, over standard on-site audible and visual alarm (optional), remote signal GPRS, DTU, Lora and other transmission. The gas sensor of international famous brand is adopted. The main detection principles include: gas sensor based on the principles of electrochemistry, infrared, catalytic combustion, thermal conductivity, PID photo ion, etc..

l Optional 1-6 kinds of compound gas detectors

l Concentration display unit can be switched freely

l A variety of communication methods are available

l Real-time monitoring via wired or wireless remote transmission, network transmission; 3-wire 4-20mA standard signal and standard bus RS485 (modbus-RTU) output at the same time; optional frequency output 200-1000Hz, Hart protocol signal, 1-5V output, 2-wire 4-20mA, SMS alarm, wireless transmission (2-5km or unlimited distance); compatible with secondary instruments, data acquisition modules, PLC, DCS system, can drive related equipment.

l Infrared remote control
Standard infrared remote control, through the infrared remote control function keys can be one-touch operation, can realize in dangerous occasions without opening the cover operation, such as: modify the alarm point, concentration calibration, zero calibration, silence, restore factory and other functions.

l Rich human-machine interface
1.7" HD color screen, display real-time concentration, alarm status.

Parameter Name	Parameter Value
Type	concentration
Applications	gas (CEMS) continuous emission
Interface	wireless
Other characteristics	real-time online