The poor installation quality of orifice flowmeter will affect the reading accuracy of orifice flowmeter. In order to improve the reading accuracy of orifice flowmeter, the following points should be paid attention to in the installation of orifice flowmeter: the installation position of orifice flowmeter should be in the straight pipe section, in the pipe with a distance of ten times the diameter of orifice before and five times the diameter of orifice behind, no protruding plastics, welding marks and dirt are allowed. The installation direction of the orifice plate should not be wrong, and the sharp edge of the inlet should face the flow direction of the fluid; The center of the orifice plate must coincide with the center of the pipe, because that the coefficient K in the flow calculation formula is related to the fluid density and other factors.
