Overview of Portable Open Channel Flow Meter/Velocity Meter:

MGG/KL-DCB portable open channel flowmeter/flow meter is a portable measuring instrument designed specifically for flow rate/flow measurement in industries such as hydrological monitoring, river flow monitoring, agricultural irrigation, municipal water supply and drainage, and industrial wastewater treatment. It adopts a special low-power design scheme and fully digital signal processing technology, making instrument measurement more stable and reliable, with a wide measurement range and high measurement accuracy. It can be widely used in fields such as hydrology, water conservancy, agricultural irrigation, water supply and drainage that require frequent mobile measurement.

Portable open channel flowmeter/flowmeter features:

1. Reliable operation: The speed sensor has no moving parts and will not produce entanglement, maintaining long-term continuous and reliable operation.

2. High definition display: The monitor adopts a high-definition backlight LCD display, with a full Chinese character menu display and simple operation for easy use; Clear readings are available day and night.

3. Complete display: The instrument can simultaneously display the average flow velocity of the cross-section, instantaneous water level, instantaneous flow rate, cumulative flow rate during the measurement time, measurement time, measurement point flow velocity, etc.

4. Multi purpose: The instrument can be used as both a flow meter and a flowmeter (by inserting it into the basic structure of the water passage section and inputting water depth data, flow measurement can be achieved); It can meet the flow velocity and flow measurement of open and closed channels with different cross-sections.

5. Data saving: 1000 sets of measurement data can be saved at once, never lost.

6. The integrated pressure unit can directly measure water depth.

7. Operated entirely in Chinese.

8. Efficient probe with low flow resistance.

Main technical specifications of portable open channel flowmeter/flowmeter:

Measurement range: Flow velocity measurement 0.01m/s to 10m/s (resolution 5mm/s)

Measurement accuracy: ± 1.0%+0.005m/s

Collection time: Automatic collection from 1S to 3600S, adjustable, manual control time

Power supply mode: 1.5V * 5 alkaline battery

Display mode: LCD large screen LCD backlight display, flow rate, accumulation, flow rate, flow direction, battery level, alarm information, running time, working status

Physical interface: RS485 interface (optional)

Dielectric conductivity:> 20µs/cm

Medium temperature: 0 ℃~60 ℃

Environmental temperature:- 10℃～50℃

Display digit: 3 digits (X.XXX)

Dimensions: 204 * 100 * 35mm (display)

Dimensions: Φ 32 × 460 (mm) (sensor)

Measuring rod length: conventional 500mm x number of sections (500mm x number of sections optional) or lifting ring accessories

Working principle of portable open channel flowmeter/flowmeter:

The portable open channel flowmeter/flowmeter is made based on Faraday's law of electromagnetic induction.

When the conductive fluid moves along the alternating magnetic field of the flow velocity sensor perpendicular to the axis of the electrode, the conductive fluid cuts the magnetic field lines and generates an induced potential. This potential is collected by the signal electrode (two symmetrical electrodes are installed on the two side walls of the flow velocity sensor perpendicular to the parallel lines and magnetic field lines of the conductive fluid), and this induced potential is proportional to the magnitude of the flow velocity; The converter calculates the flow velocity of the conductive fluid flowing through the side of the flow sensor through the induced potential. This flow velocity signal is amplified and converted into a digital signal proportional to the flow velocity signal by the flow display meter, thereby achieving the measurement of flow velocity.

The flow display meter calculates the water flow rate at the end face by adding the flow velocity signal to the water level data and basic structural parameters of the channel, and then using the hydraulic mathematical model set in the display meter. [Q (instantaneous flow)=S (cross-sectional area) * V (average cross-sectional velocity) (obtained from hydraulic models)].