EJ-HC01A type (portable mixed collection type) automatic water sampler is a dedicated environmental monitoring instrument used for surface water and wastewater sampling, the monitoring of water sources, and investigation of the pollution source. It adopts the internationally common peristaltic pump water intake method, and is controlled by a single-chip microcomputer. According to user’s needs, to collect equal proportion mixed water samples and isochronous mixed water samples. Meet the sampling requirements in HJ/T91-2002 "Surface Water and Wastewater Monitoring Technical Specifications" issued by the National Environmental Protection Agency. It uses a standard 12V battery to work. Working in the field, when the battery is insufficient, the car battery can be used instead. When the flow sensor(optional) is selected, the flow rate is measured at the same time. And the measured flow data and sampling situation can be stored. The stored data will not be lost after power failure, and can be checked afterwards. It is one of the necessary instruments for the environmental monitoring at all levels, the water pollution monitoring of the supervision station and the research work of the environmental protection and research department.

2. Number of mixed water samples (N) : 1 to 200, can be set arbitrary
3. Vertical sampling height: 8m.
4. Horizontal sampling distance: 50 meters. With a sampling tube automatic flushing function.
5. Sample volume error:. ± 5%
6. Sampling repeat accuracy: ± 5ml.
7. Storage container: 10 liters polyethylene bottle.
8. System clock time control error:  :△1 ≤ 0.1% and △24 ≤ 30S.
9. Air tightness of piping system: ≤-0.05MPa.
10. MTBF (Mean Time Between Failures): ≥ 3000h.
11. Insulation resistance:> 20MΩ.
12. 2.8TFT true color touch screen.
13. Software password lock that protects the instrument setup program will not be modified.
14. Can be preset and store 10 common procedures in accordance with the sampling requirements, could later be used directly.
15. The instrument can automatically record and store each sampling situation. After the flowmeter is connected, the flow data of three months can be recorded at five-minute intervals. Each set of data includes: month, day, hour, minute; instantaneous flow; cumulative flow. The recording time interval of each set of flow data can be set arbitrary. The larger the interval, the longer the recording time, and the cyclic update method is adopted. The stored data will not be lost after power failure, so you can check it at any time. Users can perform data analysis based on these data and the test results of the water samples.
16. The instrument is equipped with RS232 interface, which can control sampling externally, and output the time and flow parameters of the sampled product.
17. Working environment temperature: -5°C to +50 °C.
18. Power supply: AC and DC dual purpose, built-in DC12V lithium battery
19. Shell protection grade: IP65, can be used in sewage environment and all-weather.
20. Flow rate: 3.7L/min. The inner diameter of the pump tube is 10 mm, which is made of high-strength medical silicone tube.
21. Meas.: Dia430×H670) mm ;Weight: 23Kg