What is the nominal flow of water meters?
Nominal flow: also known as common flow, refers to the maximum flow under rated operating conditions, in this flow, the water meter works normally, and the value of error in the maximum allowable error.
(1) the nominal flow rate of DN15 is 1.5 m3/h;(2) the nominal flow rate of DN20 is 2.5 m3/h;(3) the nominal flow rate of DN25 is 3.5 m3/h.Some water meters on the subject of "N2.5" refers to the "water meter nominal flow Qn is 2.5 m3/h", from which we can know that the water gauge's caliber is DN20. (nominal flow, some people are accustomed to commonly known as flow)
Nominal flow is the maximum flow that a meter allows for long-term use, under rated operating conditions.
