The DR-803N Water Quality Automatic Sampler is widely used at pollution sources and at the inlet and outlet of wastewater treatment plants, and is connected to online monitors for COD, ammonia nitrogen, total phosphorus, total nitrogen, and heavy metals. It features a flow tracking sampling mode that automatically adjusts the sampling flow based on instantaneous flow, ensuring continuous sampling and more representative water samples. It is equipped with functions such as AB tank mixing supply, automatic emptying of sample bottles, and automatic addition of preservatives to stored water samples. It is an ideal配套 equipment for online monitoring systems of water pollution sources and a comprehensive solution for total emission reduction.