It can be used as liquid, gas or air flow meter and the results can be checked against the textbook formula to gain confidence in using this easy to use orifice plate pressure drop /flow rate calculation. Pressure drop formula calculation is published. Measure pressure drop from position 1 to position 2 and calculate flow rate and more with this easy to use flow calculator. Practical for larger tube diameters and for dirty fluid where other methods are impractical. The pressure drop calculation formula for the pipe is explained in more detail below. Based on the magnitude of pressure drop, flow rate can be calculated. With orifice plate, pressure drop is created. Orifice plate pressure drop calculator is used for flow rate measuring in pipe systems. This site also has other calculator dealing with venturi and pitot tube calculations on other pages. This particular pressure drop calculator deals with what happens with orifice plates. Low velocity will result in lower or no pressure drop. High flow velocities and or high fluid viscosities result in a larger pressure drop across a section of pipe or a valve or elbow. Pressure drop increases proportional to the frictional shear within the pipe. The main factors of resistance to fluid flow are fluid viscosity and fluid velocity. Pressure drop occurs with frictional forces, caused by the resistance to flow on a fluid as it flows through the tube or pipe. Pressure drop is often defined as the difference in pressure between two points of a fluid in a conduit.

Orifice plate calculation software