Flow meters for gas measurement generally use dry measurement calibration, while flow meters for liquid measurement use real flow calibration. For physical parameters that can express their impact on the flow measurement results in explicit functions, these parameters However, for most flow measurement instruments, the impact of physical parameters on their measurement performance is difficult to accurately express using mathematical formulas.
Body' Body' The most direct impact of temperature changes or operating pressure on the flow meter is the change of its measurement and calibration chamber. Its indirect impact is the physical properties such as the viscosity and density of the measured medium. The indirect impact can be in the correction of physical property parameters. time to consider.
Body' Body' For velocity flow meters, changes in operating conditions will cause changes in their flow area, which will lead to changes in the meter coefficient. Changes in the measuring chamber of a positive displacement flowmeter will cause changes in the volume used as the measurement reference, causing changes in internal leakage and thus affecting the flow measurement results.
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