AMT-CL200/CL200s chlorine dioxide water quality transmitter can accurately measure the concentration range of 0.005-20.00mg/L. It adopts the principle of constant voltage method and has automatic temperature compensation function to eliminate the influence of environmental temperature on measurement. The dot matrix LCD screen supports Chinese/English menu operations, displays density and status on the same screen, and is password protected to prevent accidental operation. CL200 is equipped with 1 4-20mA output and 2 sets of relays. CL200s is upgraded to 2 signal outputs and 3 sets of relays, supporting RS485 communication. Wide voltage power supply is suitable for various scenarios, with flexible installation methods such as dial/plate installation, suitable for fields such as drinking water and sewage treatment, providing a stable and reliable solution for chlorine dioxide monitoring of water quality.