Vortex flowmeter issues
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On the nameplate of a vortex flowmeter (whose signal is in pulse form), it indicates whether it is used for measuring gases (G) or liquids (L); but how can one tell on its panel whether it is designed for measuring liquids or gases?
Modern intelligent vortex flowmeters, such as the Yokogawa DY series and Rosemount 8800 series, can measure both gases and vapors as well as liquids; all that is needed is to set the appropriate setting such as GAS or LIQUID in their function options
It is best to specify the conditions and physical parameters of the medium to be measured when ordering a vortex flow meter, so that accurate calibration can be carried out at the time of production in accordance with the requirements of the operating conditions. When vortex flowmeters leave the factory for use in liquid measurement, they are typically calibrated using water, and then a correction factor is applied to convert the values to those applicable to the relevant medium ； For gas measurement, correction is performed using air, and then a correction factor is applied to convert it to the relevant measuring medium. If the existing vortex flowmeter is to be used for a different application, it is best to have the supplier use specialized software to perform calculations and reset the parameters in order to reduce errors. Even in intelligent flowmeters, there are certain parameters that users cannot modify on their own. These parameters are usually set by the manufacturer before the device leaves the factory, and they cannot be changed arbitrarily by the operator.
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