DR-803K water quality automatic sampler is a sampler specially designed and produced by Derun Houtian for mixed sample supply and over-standard sample retention in the online monitoring system of water pollution sources. Samplers are widely used in the import and export of pollution sources and sewage treatment plants, and are used online with online monitors such as COD, ammonia nitrogen, total phosphorus, total nitrogen and heavy metals. It has a flow tracking sampling mode, which can automatically adjust the sampling flow according to the instantaneous flow, realize continuous sampling, and ensure that the collected water samples are more representative. It has the function of mixing samples in barrel A and barrel B, and can provide uninterrupted mixed water samples to the online monitor.
The invention realizes the functions of collection, mixing and temporary storage of mixed water samples, over-standard sample retention and alarm, sample refrigeration, automatic cleaning and emptying of mixing barrels, sample protection and the like. It meets the national standards of HJ 353-20 19, HJ 354-20 19 and HJ 355-20 19, and is an online water pollution source.