1, the effect of fluid temperature on the flow coefficient of the vortex flowmeter, the change of the density of the fluid after the change of the fluid temperature, thus bringing the error to the mass flow measurement of the differential pressure type flowmeter and the speed flowmeter. Density compensation to solve. In addition, the fluid temperature changes also cause the flowmeter to measure part of the geometric changes, and thus cause errors.
2, the flow coefficient is affected by the fluid temperature has two parts: the body caused by changes in the width of the pipeline caused by changes in diameter. Why do you say that? In addition, the flow rate is inversely proportional to the diameter of the pipe, and when the fluid temperature rises, the volume increases and the frequency is inversely proportional to the frequency. , The pipe diameter increases, the body on both sides of the flow cross-sectional area increases, the corresponding decrease in flow coefficient, flow indication is low.