The turbidity/suspended solids (sludge concentration) sensor is a water quality sensor that measures turbidity and suspended solids based on 90° and backscattered light measurement principles. Mainly used in the fields of surface water, domestic sewage, and industrial sewage. The turbidity sensor is equipped with an automatic optical window cleaning function, which greatly reduces the amount of manual maintenance and ensures the normal operation of the sensor even in harsh environments. In addition, with the DL-W-S series meter head transmitter and WQS-Server (WQS cloud service), users can realize on-site and remote data viewing.