The HC21 automatic water quality sampler is a specialized environmental monitoring instrument launched by Beijing Gresp Technology Development Co., LTD. It is used for surface water and sewage sampling, water source monitoring, pollution source investigation and total quantity control. It adopts the internationally common peristaltic pump water extraction method and operates under the control of a single-chip microcomputer. It can collect proportionally mixed water samples and time-mixed water samples according to the user's needs. It works with a 7.8AH large-capacity lithium battery. When the power is insufficient during fieldwork, a car battery can be used as a substitute. When selecting a flow sensor, it measures the flow simultaneously and stores the measured flow data and sampling situation. The stored content will not be lost in case of power failure and can be reviewed afterwards. It is one of the essential instruments for environmental monitoring and supervision stations at all levels to conduct water pollution monitoring work and for environmental protection research departments to carry out research work.
It is used in various water environment scientific research and in the daily work of environmental monitoring stations, water conservancy and hydrology, health and epidemic prevention stations, disease control centers, universities, environmental assessment departments, and all other environments that require portable water sampling.
1. Product features:
· Automatically collect isochronous mixed water samples;
· Cold-rolled steel plates with plastic coating can be used all day long in the wild and are convenient to carry;
· Compact and lightweight, it is easy to use;
· Optional smart cloud management platform;
· Self-developed, modular design, highly integrated, low failure rate, and simple and convenient maintenance and repair;
2. Technical indicators
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Project |
Index |
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Sampling method |
Manual sampling volume: (5-10,000 ml) arbitrarily set, increment of 1 ml; Automatic sampling volume: Time-equal proportional mixed sampling; Sampling delay time: (1 to 9999 minutes) arbitrarily set, increment of 1 minute; Sampling interval time: (1 to 9999 minutes) arbitrarily set, increment of 1 minute; Sampling volume: (5-10,000 ml) arbitrarily set, increment of 1 ml; Number of mixed samples: (1 to 200) Flow trigger sampling: Sampling is controlled by a dedicated flowmeter. An ultrasonic liquid level sensor is required for selection. It can be set freely for 1 to 9999 cubic meters of water, with an increment of 1 cubic meter. Pulse-triggered sampling: 1 to 9999 pulses can be set arbitrarily, with an increment of 1 pulse. The received pulse is a passive pulse with a closing time greater than 1 second. |
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Sampling pump characteristics |
Sampling flow rate: 3700 mL/min; Pump pipe inner diameter: 10 mm; Pump tube material: High-strength medical silicone tube; Pump assembly material: The pump body is made of reinforced engineering plastic, and the quick-disassembly and assembly modules are combined. The motor shaft and pump pipe roller bracket are made of stainless steel. Sampling volume error: ±5% Sampling repeatability accuracy: ±5mL; Vertical head: 8m Horizontal suction lift: 50 meters; Air tightness of the pipeline system: ≤-0.085MPa; |
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Main software functions |
Operation interface: large screen 2.8 TFT color LCD display, all English menu, man-machine dialogue, when the need for human intervention are prompted in English. Pipeline rinsing: The pipeline is rinsed by the "blow - suction - blow" method to prevent cross-contamination of samples. Software password lock: It can protect the programs set inside the instrument from being modified. Sampling program preset: 10 commonly used working programs can be preset and stored according to sampling requirements, and can be directly called up later. Power-off protection: power off restart, stored parameters and data are not lost. Sampling record: Sampling time, sampling status, sampling bottle number. Can store 5,000. Flow records: time, instantaneous flow, cumulative flow. It can store 6,000 ( Ultrasonic liquid level sensor needs to be selected ). |
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Other parameters |
Water storage container: 10L polyethylene drum; System clock: Time control error: △1≤0.05% and △12≤3S; Mean Time between Failures (MTBF) : ≥1440h/time; Insulation resistance: >20MΩ |
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Conditions of use |
Rated power: 28W Operating environment temperature: -5℃ to +50℃; Working environment humidity: 5-85%RH Shell material: Cold-rolled steel plate with plastic coating, resistant to acid and alkali, corrosion and aging. Protection grade: IP65 Weight: 21kg Overall dimensions: 40cm×39cm×64cm(length × width × height) |
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Optional |
1. The intelligent cloud management platform can be selected to realize the remote cloud platform control.(Sampling can be set remotely by any Internet computer or mobile phone) 2. Ultrasonic liquid level sensor ( realize the function of flowmeter ) |