【 Keywords: online, multifunctional, constant temperature refrigeration, 24 bottles, large capacity data storage, excessive sample retention, flow meter function, remote control 】

1、 Instrument Description
DS-8000 online water quality proportional samplerIt is developed based on the requirements of national environmental monitoring technical specifications, combined with the environmental pollution situation in China and the needs of environmental monitoring departments at all levels.

DS-8000 online water quality proportional samplerThe intelligent sampler that can collect sewage samples by time, volume ratio, and constant flow ratio meets the requirements of the industry standard HJ/T 372-2007 "Technical Requirements and Testing Methods for Water Quality Automatic Samplers" of the Ministry of Environmental Protection. The DS-8000 water quality proportional sampler has stable performance and powerful functions, and can meet various sampling application needs of users.

2、 Main functional features
1. Large screen Chinese display, user-friendly interface design, easy for users to operate;
2. Hybrid stepper motor, segmented driver, smooth operation, minimal noise;
3. Multiple external interface methods, including RS232, 4-20mA, switch signal, etc., facilitate connection with other online devices;
4. It has an automatic drainage function to meet various water quality conditions and has a pre rinsing function for pipelines;
5. Controllable bottle splitting device for automatic sample dispensing;
6. Multiple sampling functions: timed quantitative sampling, fixed flow quantitative sampling, flow ratio sampling, liquid level ratio sampling, real-time quantitative sampling, etc;
7. Multiple sampling program startup methods: external signal triggered startup, over limit sample retention startup, preset time startup, instant startup, liquid level over limit triggered startup, etc., to meet user needs;
8. Remote communication function, capable of remote SMS control for startup and remote inquiry of on-site status (optional communication module);
9. Rich data query function, large capacity data storage function, convenient for users to conduct statistical analysis;
10. Equipped with printing and communication functions, real-time printing of on-site data (optional printer);
11. Equipped with access control function and two-level password locking for parameters to prevent illegal operations;
12. Liquid level sensors detect liquids to improve collection accuracy;
13. Digital constant temperature control system with cooling and heating functions to ensure the storage temperature of samples;

IIIparameter
Sampling program: Multiple sampling programs can be pre programmed and started with one click;
Sampling records: can save 10000 sampling records;
Information recording: It can store at least 2000 information records, including system power-off and power on, parameter modification, equipment failure, and other information;
Traffic query: 2 years of hourly, daily, monthly, and annual traffic records to meet user needs;
Sampling program startup methods: external signal triggered startup, over limit sample retention startup, preset time startup, instant startup, liquid level over limit triggered startup, etc;
Communication signal interface: Two RS232 signals, RS485 signals, 4-20mA signals, switch signal;
Sampling speed: 100ml-1200ml/minute, adjustable;
Single sampling volume: adjustable from 1ml to 9999ml;
Single sampling interval: adjustable from 1 minute to 9999 minutes;
Sampling error: ± 5%;
Proportional sampling error: ± 10%;
Parallel sampling tube length: 0-50 meters;
Vertical sampling suction: ≤ 8 meters;
Number of bottles: 1-24;
Single bottle capacity: ≤ 1000ml；
Sample storage temperature: 4 ℃, ± 1 ℃;
Working environment temperature:- 20℃~+60℃；
Supply voltage: AC: 220V 50HZ, ± 15%;
Dimensions: 1000 * 540 * 540 (unit:) mm）；
Whole machine weight: ≤ 60Kg；