How does a water meter work?
Is actually very simple, because the water meter shell is fixed, the internal volume is fixed, and the water is flowing, it promotes a rotation of the impeller, the impeller when rotating a circle, there is a constant volume of water. Therefore, as long as the number of turns of the impeller is accumulated, multiplied by the constant volume, the total flow can be obtained.
The word "m3" is also written on the scale, which means "cubic metre". That is to say, the unit of reading for this meter is cubic meter. Because every cubic meters of water is just a ton, reading is the direct tonnage, so water can be conveniently according to the total water readings (tonnage) calculated.
Tap water pipe on the water, there are several small pointers along the arcs in a water meter on the dial, the small red triangle, when the water flow in the red triangle on the leading twist, turn up. As for those small hands, no matter the water does not flow almost motionless.