Will the water meter go slow when it's safe?!
Velocity meter: a water meter enclosed in a closed pipe, consisting of a moving element, which is directly moved by the velocity of water flow to obtain power and speed.A typical speed water meter has a rotor type water meter and a spiral wing type water meter. There are single beam water meter and multi stream beam water meter in the rotor type water meter.
Water meterAn instrument for measuring water flow. The cumulative flow of water is mostly measured. Generally divided into the volume of water meters and speed water meter two categories. The accuracy of the former is higher than that of the latter, but it requires high water quality and is easily blocked when the water contains impurities. An instrument for recording the amount of water used in running water is mounted on a water pipe, and when the user leaves the water, the pointer or wheel turns on the table to indicate the amount of water passed.
Displacement water meter: installed in a pipe, consisting of a number of water meters that are successively filled and discharged by a known volume of fluid and a fluid actuated mechanism, or referred to as a quantitative discharge meter.
