DR-803K Water Quality Automatic Sampler (Mixed Supply Type)

Application Overview

The DR-803K Water Quality Automatic Sampler is specifically designed and manufactured for mixed sample supply and over-limit sample retention in online water pollution source monitoring systems. This sampler is widely used at the inlets and outlets of pollution sources and wastewater treatment plants, and is connected to online monitors for COD, ammonia nitrogen, total phosphorus, total nitrogen, heavy metals, etc. Its unique flow-tracking sampling mode automatically adjusts the sampling flow rate based on instantaneous flow, enabling continuous sampling and ensuring the collected water samples are more representative. It features mixed sample functionality with A and B barrels, providing uninterrupted mixed water samples to online monitors.

This water quality automatic sampler performs functions such as collecting mixed water samples, mixing and temporarily storing mixed water samples, retaining over-limit samples and alarming, refrigerating samples, automatically cleaning and emptying mixing barrels, and protecting samples. It complies with the national standards HJ 353-2019, HJ 354-2019, and HJ 355-2019, making it an ideal supporting device for comprehensive solutions in online water pollution source monitoring systems.

Features

Sampling Function: Supports multiple sampling trigger methods, including timed sampling, time-proportional sampling, flow-proportional sampling, flow-tracking sampling, external control sampling, and serial port control;

Sample Retention Function: Enables over-limit sample retention, synchronous sample retention, direct sample retention, and serial port-controlled sample retention;

Sample Supply Function: Simultaneously provides uninterrupted mixed water samples to multiple online monitors for COD, ammonia nitrogen, total phosphorus, total nitrogen, heavy metals, etc.;

Manual Comparison Sampling Port: Equipped with a manual sampling port for manual comparison sampling of mixed water samples;

Recording: Includes sample retention records, door opening/closing records, power outage records, and alarm records;

Power Failure Protection: Automatically protects during power outages and resumes operation upon power restoration;

Remote Control (Optional): Enables remote status queries, parameter settings, record uploads, and remote control of sample retention;

Digital Temperature Control: Precise digital temperature control for the refrigeration chamber, equipped with a heat equalization system for uniform and accurate temperature;

Automatic Rinsing: Rinses the pipeline with the water sample to be tested before each sampling to ensure representativeness;

Automatic Emptying of Mixing Barrel: The mixing barrel features rapid automatic emptying;

External Pump Control: Directly controls external pumps to extend sampling distance;

Water Sample Refrigeration Function: Uses compressor refrigeration to maintain retained water samples at a constant temperature of 2°C to 6°C;

Pipeline Optimization: Sampling and supply pipelines use rigid PVC pipes.

Technical Specifications