WebIf the standard selected is the 1998 or 2003 specification the Reader-Harris/Gallagher equation is used to calculate discharge coefficient. Expansibility Factor If the standard being used is the 1991 or 1998 specification then expansibility factor is calculated by: WebCoefficient of discharge for orifice flow can be calculated using Reader-Harris/Gallagher (1998) equation (ISO 5167): where is: β - diameter ratio d 1 /d 2 ; Re D - Reynolds number based on bigger diameter; d 1 - internal diameter (smaller); d 2 - internal diameter (larger);

C270 – ISO 5167 Orifice Mass Flow Calculation - Kelton

WebJan 1, 2015 · This equation was published in Reader-Harris ( 1998) and accepted as the expansibility-factor equation in ISO 5167-2:2003. The Gaz de France values in Table 6.1 were calculated assuming κ = 1.31; the effect of using the true value would be very small. It is clear that within the database in Table 6.1 there are sets of data with higher uncertainty. WebReader-Harris/Gallagher (1998) Equation (ISO 5167-2:2003) PR14 Equation Reader-Harris/Gallagher (RG) Equation (API 14.3.1:1990) dexter\u0027s menu with prices

The Effect of Drain Holes in Orifice Plates on the Discharge ...

Flow rates through an orifice plate can be calculated without specifically calibrating the individual flowmeter so long as the construction and installation of the device complies with the stipulations of the relevant standard or handbook. The calculation takes account of the fluid and fluid conditions, the pipe size, the orifice size and the measured differential pressure; it also takes account of the coefficient of discharge of the orifice plate, which depends upon the orifice type a… WebAn orifice plate is a device used for measuring flow rate, for reducing pressure or for restricting flow (in the latter two cases it is often called a restriction plate). Either a … WebThe U.S. gas industry uses the Reader-Harris/Gallagher (R-G) equation to calculate the discharge coefficient. The R-G equation was derived using a database of discharge coefficient measurements taken by flow laboratories around the world. The discharge coefficients included in the database were measured when the pipe flow had a churchtown primary southport