The FC20(Closed-loop Circulation) online water quality over-limit sample retention device is a water quality sample retention bottle automatic circulation and closed-loop type over-limit sample retention sampler developed by Beijing Grace Technology Development Co., Ltd. in conjunction with online water quality monitoring instruments. It adopts an advanced peristaltic pump water extraction method and is controlled by an ARM single-chip microcomputer for operation. It can be networked with online monitoring instruments, data acquisition devices or remote monitoring platforms. When the water body being tested exceeds the standard and sends an over-standard signal or the remote platform issues a sampling instruction, the sample retention device automatically synchronously saves the water sample in the water storage bottle, achieving automatic sample retention, automatic water sample emptying, and automatic bottle mouth sealing. The retained water sample is exactly the same as the tested water sample and is stored in a constant-temperature refrigeration box. It is an essential component of the automatic water quality monitoring system.
Automatic monitoring of water quality at enterprise rainwater discharge outlets, internal control, river sections, and drinking water sources.
Product features:
Low-temperature refrigeration at 4±2℃;
7-inch color LCD display
The sample retention bottle has a sealing function and can be automatically sealed after sample retention.
The sample retention bottle circulation function enables the sample retention bottle to be automatically reused.
Configure the access control system;
Water shortage alarm
The sample retention bottle can be independently removed and is easy to clean.
Technical indicators
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Project |
Indicator |
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Specification |
12-0.5L |
12-1L |
24-1L |
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The number of sample bottles retained |
12 |
12 |
24 |
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Capacity of the sample bottle |
500ml |
1000ml |
1000ml |
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Standard sampling |
Single sampling is placed in one bottle, with any setting from 1 to 12 bottles, and the increment is 1 bottle |
Single sampling is placed in one bottle, with any setting from 1 to 12 bottles, and the increment is 1 bottle |
Single sampling is placed in one bottle, with any setting from 1 to 24 bottles, and the increment is 1 bottle |
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Mixed sampling |
N samplings can be set and placed in one bottle. The number of samplings can be set arbitrarily from 1 to 100, but it must not exceed the total amount of a single bottle at most |
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Bottle separation sampling |
It can achieve 1 to 12 bottles of sub-bottle sampling. The distribution system is self-lubricating and self-locking in position. It adopts a direct water injection type to avoid cross-contamination of water samples caused by the diversion of flow by the deflector |
It can achieve 1 to 12 bottles of sub-bottle sampling. The distribution system is self-lubricating and self-locking in position. It adopts a direct water injection type to avoid cross-contamination of water samples caused by the diversion of flow by the deflector |
It can achieve 1 to 24 bottles of sub-bottle sampling. The distribution system is self-lubricating and self-locking in positioning. It adopts a direct water injection type to avoid cross-contamination of water samples caused by the flow diversion of the flow guide plate |
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Sampling volume |
Set freely from 5 to 500ml, with an increment of 1 ml |
Set freely from 5 to 1000ml, with an increment of 1 ml |
Set freely from 5 to 1000ml, with an increment of 1 ml |
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Start event: |
Start immediately: No waiting events Fixed-point startup: Wait until the set time to start the program Pulse start: Start the program after waiting for the pulse event. Passive pulse 4-20mA startup: Start the program after waiting for the 4-20mA event RS485 startup: Start the program after waiting for the RS485 command event |
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Interval event |
Time interval: The interval time set by the user needs to be waited for before each sampling Pulse interval: Before each sampling, wait for the pulse event set by the user 4-20mA interval: Before each sampling, wait for the 4-20mA event set by the user RS485 interval: Before each sampling, it is necessary to wait for the RS485 command event |
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Characteristics of the sampling pump |
Sampling pump flow characteristic: 3700 mL/min Sampling volume error: ±5% Sampling repeatability accuracy: ±5mL Vertical head: 8 meters Horizontal suction lift: 50m, equipped with an automatic sampling tube flushing function, and the flushing frequency can be set Pump tube inner diameter: 10mm, high-strength medical silicone tube, pump body is made of reinforced engineering plastic, quick disassembly and assembly module combination, motor shaft and pump tube roller bracket are made of stainless steel |
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Communication interface |
One RS232/RS485 digital interface (default RS485) Modbus_RTU protocol Analog input 1 channel 4~20mA, 12-bit resolution One passive switch input The switch output is 1 passive channel The switch output is 1 active channel, 15VDC/200mA |
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Software functions |
Operation interface: Large 7.0TFT color LCD touch screen, all Chinese menus, and Chinese prompts when inputting. Full bottle stop: Activate this function and stop the sampling program when all sampling bottles are full. Pipeline rinsing: The pipeline is rinsed by the "blow - suction - blow" method to prevent cross-contamination of samples. Software password lock: Prevents non-operating personnel from misoperation and malicious operation; Power-off protection: Automatically resumes operation after power-off and power-on. Sampling program preset: 10 commonly used working programs can be preset and stored according to sampling requirements, and can be directly called up later. External pump control: The sampling distance can be extended by controlling the external submersible pump or self-priming pump. No water alarm: Equipped with a non-contact water passage sensor, it automatically alarms when no water sample is collected. Fault alarm: There are command alarm and passive pulse output alarm. When the instrument malfunctions, it will notify the alarm through two methods. Access control system: Normally closed electrically controlled door lock. The door closes when power is off and can only be opened with a key. When powered on, it can be opened with an access control card. The opening and closing of the door are recorded, and the records are automatically saved and uploaded when called upon on the remote monitoring platform. Remote control: Control instructions can be sent to the sampler through the monitoring platform, data acquisition instrument and industrial control computer to perform corresponding operations. Sampling records: no water state, sampling volume, sampling bottle number, sampling time. Up to 5,000 records can be stored. Door opening records: status, time, capable of storing 8,000 items; |
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Other parameters |
Water storage container: Polyethylene bottle, which can achieve automatic sealing and emptying, with upper and lower sealing valves. There is no residue when water is discharged from the bottom. Each sample retention bottle can be independently taken out, which is convenient for transportation and easy to clean and exchange. It avoids cross-contamination of water samples caused by incomplete emptying by pumping, which affects the authenticity and validity of the sample quality. System clock time control error: △1≤0.05% and △12≤3 seconds; Mean Time between Failures (MTBF) : ≥1440 hours per time; Insulation resistance: >20MΩ Air tightness of the pipeline system: ≤-0.085MPa; Constant temperature storage of water samples: Refrigeration by compressor, 4℃±2℃, digital display; |
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Conditions of use |
Power supply: AC 220V±10%, 50Hz±1% Rated power: 175W Operating environment temperature: -5℃ to +50℃ Working environment humidity: 5-85%RH Weight: 56kg Overall dimensions: 510×610×1200mm(width × depth × height) |
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Optional |
Fixative addition: (1-3 types). Dosage: 0 to 500ml can be set arbitrarily, with an increment of 1 ml. 2. Voice broadcast; 3. Printing function; 4. Ultrasonic level sensor (achieving flowmeter function); |
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