![]() For most piping systems it is 20 pipe diameters upstream and 5 Downstream for an orifice plate. The length of this is dependent on the piping layout. These type of meters require a straight section of pipe both upstream and downstream. The Beta ratio is the ratio of the orifice size to the inside diameter of the pipe. This diagram shows how fluids flow through an orifice. This pressure drop is measured using a differential pressure sensor and when calibrated this pressure drop becomes a measure flow rate (base on Bernoulli’s Law)īy Pressure Drop, we can calculate the Flow rate base on the Ratio of Pipe I.D and Orifice diameter through this formula. When an orifice plate is placed in a pipe carrying the fluid whose rate of flow is to be measured, the orifice plate causes a pressure drop which varies with the flow rate. ![]() Or Mechanical and Piping Advanced Knowledge in O&G EPCIC for Mechanical and Piping Basic Principle of Orifice Meter Visit: Shipbuilding Knowledge A-Z for more free topics on shipbuilding In this chapter, i’d like to introduce about the most common device used for measuring flow rate – Orifice Plate.
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