Measuring principle
Flow rate measurement: The flow meter is driven by water and its built-in signal device generates a revolution signal. Thus, the flow rate can be calculated from the following formula based on the total number of signals generated by the flow meter during a certain unit period:
(m/s)
In the formula: v—average flow velocity (m/s) during the measurement period
B—rotor (or cup) hydraulic pitch (m)
a—Flowmeter constant (m/s)
T—Flow duration (s)
The total number of revolutions of the flow meter rotor during the R-T period
For an individual flow meter, b and a are constant values. Therefore, when measuring the flow, as long as the T and R values ​​are measured, the flow rate can be calculated.
Flow measurement: input the measured section type, and manually input (or measured by auxiliary sensor) the water level and width of the regular section to calculate the cross-sectional area, the meter has Q=V*S to measure the flow rate Q value
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