How to use the automatic cleaning function of online chemical oxygen demand COD controller?

This video shows how to use the automatic cleaning function of Daruifuno online COD controller. The COD sensor is model COD351 which has the cleaning brush, the users can connect it with RS485, use Modbus to control the cleaning. If you have bought the online COD controller, so how to set the cleaning via controller? This video shows the specific operation. The COD controller has many advantages, two 4-20mA currents and RS485 interface, two SPST relays for control. If you are interested in our products, welcom to visit our website: www.daruifuno.com.