Denali National Park Weather Forecast for Wednesday, April 19. The Denali National Park, AK forecast for Apr 19 is 47 degrees and Patchy rain possible . There is 69 percentage chance of rain and 12 mph winds from the South-Southeast.
Topics: Introduction Equations Discharge Coefficients Error Messages References. Introduction to Orifice Flow Meter Calculation. Orifice flow meters are used to determine a liquid or gas flow rate by measuring the differential pressure (P1 - P2) across the orifice plate. The two standard pressure tapping arrangements for small bore orifices are shown in the drawings; the location of the pressure taps affects the discharge coefficient somewhat.
Orifice plate is very practical and relatively low-cost measuring device for flow rate measurement with good accuracy. By placing orifice plate in the pipe, sudden pressure drop is created. Degree of created pressure drop is directly proportional to the stream velocity and consequently, to the flow rate. That behavior and strong interaction between stream velocity and pressure drop due to local restrictions is used for flow rate measurement by orifice plate.