Common error in the system of differential pressure flow meter scale solution

Abstract: the common error in the system of differential pressure flowmeter scale solution information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. If you don't correct such calculation flow results QVN slants small. Due to the measuring instrument error and the conditions of use do not fully meet the requirements of specification is hard to avoid the impact of error often measure trade settlement. Below are common error is analyzed. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a common error in the system of differential pressure flowmeter scale solution article details. If you don't correct such calculation flow results QVN slants small. Due to the measuring instrument error and the conditions of use do not fully meet the requirements of specification is hard to avoid the impact of error often measure trade settlement. Below are common error is analyzed. Which is used to calculate orifice flow of zui large aperture and small zui flow deviates from the user's actual zui large flow and zui small flow is larger, 1 gas master accurate enough for users. As a calculation in the orifice of the aperture is bigger, the resulting error. AvnCEFGε FZFT constant, according to SY/T61432004 gas flow metering method of using the formula: QVN = AvnCEd2FG & epsilon; F2FTP1 delta P analysis: under the condition of invariable pressure, temperature and composition. Differential pressure meter range constant, variable was small and delta P delta P d, large orifice meter to measure small flow rate. Such making that the differential gauge working in the range below 10%, it is not conform to the requirements of the SY/T61432004 namely the differential value should be within the scope of work in the full range of 10% 90%. Especially for orifice rectangular entrance edges and straight pipe lining erosion is particularly serious, 2 orifice meter manufacturing and installation should comply with the regulations of SY/T61432004 talents put to use. Orifice plate in use process by different scouring and corrosion level. This will affect the orifice fairly rk rectangular inlet edge of the circular arc radius and the straight pipe inner surface roughness of arithmetic average deviation in the rules and regulations of Ra, the outflow coefficient C will change, cross flow measurement uncertainty estimates. In order to prevent this kind of error, change new orifice plate and straight pipe, if you want to continue to use can be calculated fairly rk and Ra of outflow coefficient correction before use. Correction method is: will the outflow coefficient C on bk orifice sharp degree coefficient and roughness coefficient rRe or at the same time by bk and rRe C&prime namely; = CbkrRe above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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