The water meter data is automatically read and uploaded to the centralizer by the centralizer under the command of reading the current data of the water meter; the speed of reading the water meter data is about 300ms; there is no need to support the power supply, and the pulse power is given by the collector (or the centralizer) when the data is read and read; the meter-reading platform can operate the actuator to shut down and turn on the actuator.

Calculation of parameters and limits of error of indication (range ratio Q3/Q1 = 100)