A differential pressure flow meter is a special device for measuring how fast fluids or gases are flowing in a system. It does this by comparing the pressure at two points. This difference in pressure – homeostatic pressure – is what tells us about the flow rate of the liquid or gas.
The differential pressure flow meter consists of two essential elements: the primary element and the secondary element. The active element is located in the flow and forms a pressure loss. The secondary measures the differential pressure across the primary.
The drop of the pressure which the differential flow meter is trying to measure is a very useful one for estimating the flow of fluid. When the pressure differential is greater, the flow is greater. Its the amount of this difference that the flow meter can accurately measure to provide the correct flow rate.
Various components operate together in a differential-pressure flow meter to obtain accurate flow measurements. Part of it, the “primary element,” can be something like an orifice plate or a venturi tube that causes the pressure drop. The secondary device, normally a differential pressure transducer, senses the difference in pressure and converts this to a flow rate indication.
There are several advantages in using a differential pressure flowmeter. It is dependable and has precise flow rate readings. It is also relatively less expensive than other flow meters. And it’s simple to install and maintain, so it is a viable option for a wide range of industries.
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