Irrigation water flow meter | How to calculate the water volume?

『Irrigation water flow meter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. Common water measurement facilities in water conservancy irrigation areas include the following:

1. Ultrasonic time difference flowmeter Ultrasonic time difference flowmeter is an instrument that uses the difference in propagation speed of ultrasonic waves in fluids to measure flow rate. It measures the time difference between the forward and backward propagation of ultrasonic waves by setting up probes that emit and receive ultrasonic waves in the fluid, thereby calculating the flow velocity and flow rate of the fluid. This method has the characteristics of high precision, multi-channel measurement, multiple input methods, and easy operation, and is suitable for various tedious water conservancy irrigation environments.

2. Hydraulic Construction Method Hydraulic construction method is a method of measuring flow using empty objects in hydraulic drainage structures such as rivers, canals, lakes, and reservoirs.

. This method calculates the flow rate by measuring hydraulic factors such as the water level in front of the gate, the measured water head (head difference) behind the gate, and the opening height of the gate, combined with hydraulic formulas. This method is suitable for irrigation areas with hydraulic structures and can fully utilize existing facilities for flow measurement.

III. Pressure Water Level Gauge Pressure water level gauge is an instrument that calculates the water level height by measuring the pressure generated by the liquid on the sensor.

. It has the characteristics of self calibration, multi range selection, and long-term stable output of true liquid level values. In water conservancy irrigation areas, pressure water level gauges are commonly used to monitor water level changes in channels, reservoirs, etc., providing basic data for flow measurement. 4. Capacitive Water Gauge: A capacitive water gauge is an instrument that uses the principle of capacitive induction to measure the height of water level. It has the characteristics of self calibration, simple structure, high reliability, and low maintenance. In addition, it is not affected by factors such as temperature, density, and pressure of the tested liquid, and can work stably in various environments. In water conservancy irrigation areas, capacitive water gauges are commonly used to monitor changes in water levels in channels, reservoirs, and other areas.

Fifth, the method of constructing standard measuring weirs behind the gate (such as Bacher measuring troughs, triangular measuring weirs, trapezoidal measuring weirs, rectangular weirs, etc.) is a method of calculating the flow volume of the gate by measuring the water level of the weirs.

. This method has the characteristics of simple structure, accurate measurement, and wide applicability. In water conservancy irrigation areas, the weir method behind the gate is commonly used to measure the flow rate of irrigation channels. 6、 Surface velocity method is a method of calculating the flow rate through a sluice by measuring the surface velocity and water level of a channel using a radar flowmeter. The radar flowmeter adopts the principle of Doppler radar speed measurement to detect the surface velocity of water flow. This method has the characteristics of non-contact measurement, not affected by wind, temperature, sediment, floating objects, etc., simple structure, and high reliability. In water conservancy irrigation areas, surface velocity method is commonly used to

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