WH-2000F1 Ultrasonic Open Channel Flow Meter

Product Usage

Used in conjunction with a measuring weir to measure the flow rate of water in an open channel. Mainly used to measure the flow rate of sewage discharge outlets of sewage treatment plants, enterprise and government liquid units, and urban sewers. Due to the use of ultrasonic waves passing through the air, this instrument measures in a non-contact manner. Therefore, in the case of sticky and corrosive liquids, it has higher reliability than other forms of instruments.

working principle

The larger the flow in the open channel, the higher the liquid level; The smaller the flow rate, the lower the liquid level. For general channels, there is no definite correspondence between liquid level and flow rate. Because the same water depth and flow rate are also related to the cross-sectional area, slope, and roughness of the channel. Installing a measuring weir groove in the channel, the correspondence between the upstream water level and flow rate of the channel mainly depends on the geometric dimensions of the weir groove, as the gap of the weir or the contraction of the groove is smaller than the cross-sectional area of the channel. The same measuring weir tank is placed on different channels, and the same liquid level corresponds to the same flow rate. The measuring weir channel converts the flow into liquid level. By measuring the liquid level of the water flow in the measuring weir tank, and then reverse calculating the flow rate based on the corresponding water level flow relationship of the measuring weir tank

technical indicators

1. Flow range: 0m ³/s to 10m ³/s (determined by the type and specifications of the measuring weir used)

2. Accumulated traffic: 8-bit decimal number, automatically returns to zero after accumulating 8 digits, recalculated

3. Accuracy: ± 5%

4. Distance measurement range: 0.4m to 2m (the blind zone is within 0.4m from the bottom of the probe, and the distance measurement range is within 0.4m to 2m)

5. Distance measurement accuracy: ± 3mm (calibrated within a range of 1m)

6. Liquid level resolution: 1mm

7. Working environment temperature: -20 ℃~55 ℃

8. Instrument protection level: Instrument display part: IP66 (the wire hole at the bottom of the instrument should be blocked); Probe part: IP68

9. Power supply: AC power supply: (220V ± 22V) 6W; DC power supply: 12V-24V 300mA; When AC and DC (not greater than 24V) power supply coexist, the instrument uses AC power supply; AC power failure automatically connects to DC.

technical indicators

1. Flow range: 0m ³/s to 10m ³/s (determined by the type and specifications of the measuring weir used)

2. Accumulated traffic: 8-bit decimal number, automatically returns to zero after accumulating 8 digits, recalculated

3. Accuracy: ± 5%

4. Distance measurement range: 0.4m to 2m (the blind zone is within 0.4m from the bottom of the probe, and the distance measurement range is within 0.4m to 2m)

5. Distance measurement accuracy: ± 3mm (calibrated within a range of 1m)

6. Liquid level resolution: 1mm

7. Working environment temperature: -20 ℃~55 ℃

8. Instrument protection level: Instrument display part: IP66 (the wire hole at the bottom of the instrument should be blocked); Probe part: IP68

9. Power supply: AC power supply: (220V ± 22V) 6W; DC power supply: 12V-24V 300mA; When AC and DC (not greater than 24V) power supply coexist, the instrument uses AC power supply; AC power failure automatically connects to DC.