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Working principle of differential pressure flow meter
Differential pressure flow meter is a meter which calculates the flow rate according to the differential pressure produced by the flow detection parts installed in the pipeline, the known fluid conditions and the geometrical dimensions of the detection parts and the pipeline.Differential pressure flow meter is composed of a primary device (test parts) and a secondary device (differential pressure conversion and flow display meter).Usually classified in the form of detecting parts, such as orifice flow meter, Venturi flow meter, equal-velocity tube flow meter, etc.
The secondary device is a variety of mechatronics integrated differential pressure meter, differential pressure transmitter and flow display instrument。It has developed into a kind of instrument with a high degree of three kinds (serialization, generalization and standardization) and a huge variety of specifications. It can measure flow parameters as well as other parameters (such as pressure level density, etc.).The detecting parts of differential pressure flow meter can be divided into: throttling device hydraulic resistance type centrifugal dynamic pressure head type dynamic pressure head gain type and jet flow type.
Differential pressure flow meter is a kind of most widely used flow meter, in all kinds of flow meters, its usage occupies the first place in recent years, due to the advent of a variety of new flow meter, its usage percentage gradually decreased, but is still the most important kind of flow meter.
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