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.
The most common method of measuring gas is through an orifice meter. Gas flows through a piece of straight pipe with an orifice plate inserted in the middle. The orifice plate is a steel circular plate with a hole in the middle; the hole is smaller than the internal diameter of the pipe. The plate is placed perpendicular to the gas flow, and is sealed so that all the gas flows through the hole. The hole is tapered, meaning that the edge of the orifice hole is sharp.