Parts for a union-based orifice flowmeterДЇurther testing is required before we can deliver this as a product. The electronic pressure sensors that will ship with the GCUВ will allow high resolution measurement with very little pressure drop, producing lower losses throughout the system. The new designД«y using a union to hold the orifice plate, we can provide a number of interchangable constrictions allowing for measurement across a range of flows, either electronically or with a manometer. There is an Excel spreadsheet below used to fit when calibrating the flowmeter using another accurate flowmeter (like a rotameter). Is friction coeffient, dependent on design The pipe is 1' NPT with ~0.5' orifice with 1/8' NPTВ barbs (avoid screwing the barbs past the interior wall of the pipe).ДЄ calculator and description of the math is available here: A washer welded between a cut pipe.ДЄfter multiple calibration runs, this flowmeter has remained consistently repeatable and accurate. The pressure differential follows a simple equation, with dependencies on the fluid density, pipe diameter, opening (orifice) diameter, orifice smoothness/design, and flow rate.ДЄn early, simple implementation of an orifice flowmeter. downstream of plate), are used to measure the pressure difference created by flow through the pipe. Two taps, upstream and downstream (generally 1 pipe dia. An orifice flowmeter is comprised of a flat constriction (orifice) plate placed within a larger pipe. One of the most robust and easy to implement techniques is the orifice flowmeter. There are many methods available to determine the flow rate of gases. Measurement of gas flow rates through a gasifier is critical to better understanding and optimizing the operation of the GEK.

Orifice flow formula for gases