Customization of flow rate meter, flow rate monitoring instrument

Customization of flow rate meter, flow rate monitoring instrument

1.1 Product Overview

Flow rate monitorA portable device that measures flow velocity based on the principle of ultrasonic Doppler effect, integrates pressure sensors to measure water level, temperature sensors to measure water temperature, and calculates flow rate through the flow velocity area method. The sensor housing adoptsABS材Material, capable of effective waterproof sealing, powered by 7.4V rechargeable batteries, with strong endurance, easy to carry, and simple assembly. Suitable for measuring the flow velocity, water level, and flow rate of drainage pipelines, municipal sewage sewer channels, non full pipe pipelines, natural rivers, and open channels. It can also be used for calibration and calibration of other hydrological measurement equipment.

Large color screen with text and graphics for easy operation and flow analysis.

9999 pieces of data can be stored locally.

Real time display of flow velocity curves and graphical software, facilitating analysis and research of water flow patterns.

Low power speed measurement, built-in rechargeable battery, is currently one of the lightest Doppler current meters.

1.2 Measurement principle

Flow rate monitorThe measurement of flow velocity is based on the Doppler effect. The flow velocity sensor emits ultrasonic waves obliquely upwards, and the ultrasonic waves propagate in the fluid. The fluid contains impurities such as bubbles or particles (which can be considered to have the same velocity as the water flow). When the ultrasonic waves come into contact with the impurities in the fluid, the reflected ultrasonic waves produce a Doppler frequency shift Δ f, which is proportional to the flow velocity. By measuring the Doppler frequency shift Δ f, the flow velocity V (m/s) of the fluid can be measured. The water level measurement adopts a built-in pressure sensor to measure the distance between the location of the Doppler flowmeter and the water surface, and uses the built-in temperature sensor to measure the water temperature and correct the water level. Enter the channel parameters again, use the channel parameters and the collected water level H (m) to calculate the discharge area S (㎡), and multiply the discharge area with the flow velocity V (m/s) to calculate the instantaneous flow rate（Q=V*S）Multiply the traffic by the accumulated time to calculate the cumulative traffic.

1. Technical parameters: 1. Protection level: Host ≥ IP54, probe ≥ IP68.

2. Probe material: POM.

3. Cable material: Polyurethane.

4. Box material: Aluminum alloy.

5. Electrical interface: quick connector.

6. Power supply: 12VDC 12AH lithium battery.

7. Instrument power consumption: ≤ 3W

8. Continuous working time ≥ 8h

9. Screen display: ≥ 2.8-inch LCD display.

10. Operation menu: 18 digit keyboard operation.

11. Environmental parameter 11.1 Operating temperature: -20~60 ℃. 11.2 Working humidity: ≥ 80% RH. 11.3 Storage temperature: -40~80 ℃.

12. Technical parameters 12.1 Liquid level range: ≥ 6.0m. 12.2 Liquid level accuracy: ≤ 0.005m. 12.3 Liquid level resolution: ≤ 0.005m. 12.4 Flow rate range: ≥ 8m/s. 12.5 Flow velocity accuracy: ≤ 0.005m/s.

13. Installation bracket: ≥ 3-meter probe rod.

Customization of flow rate meter, flow rate monitoring instrument