Portable proportional water sampler

Instrument description:

The instrument complies with the "Technical Requirements and Testing Methods for Automatic Water Samplers" of the Ministry of Environmental Protection of China HJ/T 372-2007. It is a multifunctional environmental monitoring instrument that integrates flow measurement, water sample collection, automatic bottle separation, and constant temperature refrigeration. It has the characteristics of small size, convenient movement, simple operation, environmental protection and energy saving. It is suitable for environmental monitoring stations at all levels, supervision agencies, scientific research institutes, water affairs, municipal and sewage treatment plants to automatically sample water samples from industrial pollution source outlets, rivers, lakes, and seas.

Main features:

1. Humanized program design, large screen Chinese display, rich and friendly human-computer dialogue interface, easy and fast operation;

2. Use immersion level sensor or ultrasonic sensor to realize flow measurement and level measurement, complete timing ratio, fixed flow quantity, and level ratio sampling;

3. Multiple sampling functions: parallel sampling, timing quantity sampling, fixed flow quantity sampling, timing ratio sampling, level ratio sampling, instant quantitative sampling, etc.;

4. Multiple sampling program start modes: external signal trigger start (current signal trigger start, switch signal trigger start, serial port trigger start), timing start, date start, immediate start, etc.;

5. Multiple external interface modes, including RS232, RS485, 4-20mA, switch signal, etc., convenient for online connection with other online devices;

6. Built-in flow meter function, suitable for flow measurement of industrial pollution source outlets of various weirs and flumes such as triangular weir, rectangular weir, equal width weir, Parshall flume, etc.;

7. It has a refrigeration function, can refrigerate samples at a constant temperature, and the temperature can be set; the refrigeration system has a vehicle power interface, which is convenient for field applications;

8. It has an access control function, and the parameters are locked with two-level passwords to prevent illegal operations;

9. It has an automatic recording function for opening and closing the door, and can query the time when the sample chamber is opened and closed each time; 10. Rich data query functions and large-capacity data storage functions are convenient for users to conduct statistical analysis;

10. High-reliability peristaltic pump, hybrid stepper motor subdivision drive, stable and reliable operation, easy-to-disassemble pump head, liquid and pipeline contact without pollution, high temperature resistance, and corrosion resistance;

11. Modular program structure, multi-CPU control circuit, programmable control, photoelectric isolation, improve the comprehensive performance of the product; 13. Liquid flow detector, automatically completes the cleaning and emptying of the sampling port and pipeline to ensure the collection of qualified water samples; 14. Control the bottle dispensing device to automatically dispense samples, and the automatic positioning of the dispensing is accurate and reliable. The bottle dispensing method can be set, Complete single or mixed collection;

12. It has automatic emptying function, meets various water quality conditions, and has pipeline pre-rinsing function.

Technical indicators:

Sampling program: 10 sampling programs can be pre-programmed and started with one button;

Sampling methods: parallel sampling, timed quantitative sampling, constant flow quantitative sampling, timed proportional sampling, liquid level proportional sampling, instant quantitative sampling, etc.;

Sampling records: 10,000 sampling records can be saved;

Information records: at least 2,000 information records can be saved, including system power-off and power-on, parameter modification, equipment failure and other information;

Flow query: 2 years of hourly, daily, monthly, and annual flow records;

Sampling program start mode: external signal trigger (current signal trigger start, switch signal trigger start, serial port trigger start) start, preset time start, preset date start, immediate start, etc.;

Communication signal interface: RS232 signal, RS485 signal, 4-20mA signal, switch signal;

Display mode: 240*128 LCD display Chinese interface;

Sampling method: peristaltic pump suction type;

Sampling speed: 250mL~800mL per minute adjustable;

Sampling interval: 1 minute to 9999 minutes adjustable;

Sampling volume: 5mL~9999mL adjustable;

Sampling volume error: ≤ ±5%;

Proportional sampling error: ≤ ±10%;

Parallel sampling distance: ≥100 meters;

Vertical sampling suction distance: ≥8 meters;

Sample bottle capacity: ≤1000mL;

Number of sample bottles: 12 bottles;

Bottle division method: single bottle single sample, single bottle multiple, multiple bottles single sample, parallel samples;

Internal clock: real-time clock;

Number of retries for failed sampling: 3 times;

Number of pre-rinsing of sampling pipeline: 0~3 times can be set;

Refrigeration method: compressor refrigeration;

Sample chamber temperature setting: 20℃ ~-20℃ Can be set;

Power supply: AC220V±15% / 50Hz, built-in DC16.8V lithium battery (for sampling system);

Vehicle power interface: 12V, 45W (for constant temperature refrigeration system);

Ambient temperature: (5~40) ℃;

Machine weight: 23Kg;

Dimensions: 640mm×430mm×560mm.

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