The water quality sampler is composed of four parts; the first is microcomputer controller for automatic water sampling; the second is water sample buffer A and B mixing barrels, and the sample supply pipeline; the third is automatic reserved water sample bottle filling mechanism; the fourth is the constant temperature device compressor and refrigerator.

1: Microcomputer controller for automatic water sample collection: receives the communication, analog and switch signals from keyboard and outside, and controls all actions of sampling, sample supply and sample retention of the instrument;

2: Water sample buffer A and B mixing barrels: it is used to temporarily store the collected water sample, and determine whether to store the water sample in the bottle according to the over-standard signal after the sample is supplied;

3: Automatic reserved water sample bottle filling mechanism: controlled by the microcomputer controller for automatic water sample collection, it is used to deliver water samples to each water sample retention bottle;

4: Constant temperature device: controlled by automatic water sampling microcomputer controller, the compressor is in the bottom of the instrument to cool the refrigerator.

The water quality sampler is composed of four parts; the first is microcomputer controller for automatic water sampling; the second is water sample buffer A and B mixing barrels, and the sample supply pipeline; the third is automatic reserved water sample bottle filling mechanism; the fourth is the constant temperature device compressor and refrigerator.

1: Microcomputer controller for automatic water sample collection: receives the communication, analog and switch signals from keyboard and outside, and controls all actions of sampling, sample supply and sample retention of the instrument;

2: Water sample buffer A and B mixing barrels: it is used to temporarily store the collected water sample, and determine whether to store the water sample in the bottle according to the over-standard signal after the sample is supplied;

3: Automatic reserved water sample bottle filling mechanism: controlled by the microcomputer controller for automatic water sample collection, it is used to deliver water samples to each water sample retention bottle;

4: Constant temperature device: controlled by automatic water sampling microcomputer controller, the compressor is in the bottom of the instrument to cool the refrigerator.

Bottle storage: 24×1000ml (capacity can be set);

Max. vertical suction: determined by the selected external pump;

Instrument working mode:

Fixed-point-in-time quantitative: Timing: 24 time points, cycle by week;

Timing and quantification: Timing: 1～9999 minutes;

Flow quantitative: constant flow: 1～99999m³;

Timing ratio: Timing: 1～9999 minutes, flow ratio: 100～2,999,999:1;

Synchronous sample retention: synchronous switching value, RS232 communication command triggers sample retention;

Over-standard sample retention : interval: 1～9999 minutes, the retention samples are triggered by the over-standard switching value and 4～20mA current signal;

Trigger sampling: interval: 1 ～ 9999 minutes, judgment delay: 1 ～ 999 minutes, synchronous switching value triggers sample supply, and over-standard switching value triggers sample retention. It can also be triggered by RS232 communication command for sample supply and sample retention;

Timing sampling: Timing: 1～9999 minutes, pre-sampling 200～5000ml, sample supply cycle: 30～9999 minutes, judgment delay: 1～999 minutes, supply samples according to the set mode (passive sample supply, periodic sample supply, odd number sample supply, even number sample supply, fixed point sample supply), over-standard switch value triggers sample retention. It can also be triggered by RS232 communication command for sample supply and sample retention;

Flow quantitative sampling: constant flow: 1～99999m³, pre-sampling 200～5000ml, judgment delay: 1～999 minutes, synchronous switch value triggers sample supply, over-standard switch value triggers sample retention. It can also be triggered by RS232 communication command for sample supply and sample retention;

Single retention sample volume: 1～1000ml;

Accuracy of retention sample: ≤±5%; Accuracy of retention sample in equal proportion: ≤±10%;

Flow measurement range: 1～99999m³/h; Flow input signal: 4～20mA; Flow detection rate: 1s;

COD and ammonia nitrogen analyzer input signal: 4～20mA;

Digital display: 320*240 graphic LCD full Chinese characters display, menu mode operation;

Computer output interface: standard RS232/standard RS485 + standard RS232;

Storage temperature of water samples: 4±2℃, temperature deviation ±0.5℃;

Work power supply: 220V AC, 50Hz;

Work environment and temperature of sampler: 0～50℃;