volume of flow measurement is a fixed repeatedly to the small volume of fluid flow meter to measure the volume. Therefore, in the internal volume flowmeter must have constituted a standard volume of space, usually called the volume flowmeter " Measurement of space "or" Measurement Room. "Instrument of this space by the wall and shell components together constitute flowmeter rotation.

volume flowmeter for the working principle: fluid through the flowmeter, the flowmeter will have a certain import and export between the pressure difference. Flowmeter rotating components (rotor) in this pressure difference under a special rotating And fluid from the entrance to the export row. In this process, and again in a fluid flow meter "measurement space," and then was sent to continue to export. Flowmeters in the given conditions, which measures the volume of space Is identified, measured as long as the rotation frequency of the rotor. Flowmeter can get through the volume of fluid accumulated value.

a flow meter to measure the volume of space v (m 3), a certain period of time as the number of rotor rotation N, in the time flow of the fluid volume of

V = Nv (2-1)

more than a meter of gear for the constant 1, N value by turning the rotor transmission gear group of gear and instrumentation than a week rotation indicators determined by the value of the scale. If the instrument of instructions for I, with the rotor turning to the relationship between the number of N

I = N (2-2)

by type (2-1) and (2-2) available in a certain period of time through the instrument of fluid volume and value of the instrument instructions relations

V = I (2-3)