METHOD AND DEVICE FOR DETERMINING THE FILLING QUALITY OF A FREQUENCY OSCILLATOR

摘要

A method determines the filling quality of a frequency oscillator where a measured fluid is passed through an oscillator tube. The relationship between the viscosity-dependent density of the measured fluid and the quality and/or attenuation of the oscillator tube is determined. The relationship between the dynamic viscosity and the attenuation and/or quality of the measured fluid is determined, and these values are used to create a calibration table that reproduces the functional relationship between a parameter relevant for the quality and/or the attenuation of the frequency oscillator and the viscosity of the measured fluid. An independent measuring apparatus determines a measured value for the dynamic viscosity of the measured fluid. The obtained measurement value for the viscosity coincides in the calibration table with a specific function value, and the result of this comparison with respect to the presence of any filling errors is used to determine a possible filling error.

主权项

1. A method for determining a filling quality of a frequency oscillator, which comprises the steps of:
passing a measured fluid through an oscillator tube; determining a relationship between a viscosity-dependent density of the measured fluid and a quality and/or an attenuation of the oscillator tube; determining a relationship between a dynamic viscosity and the attenuation and/or the quality of the measured fluid; using these values to create a calibration curve or calibration table that reproduces a functional relationship between a relevant parameter relevant to the quality and/or the attenuation of the frequency oscillator and the dynamic viscosity of the measured fluid; determining at least a measured value for the dynamic viscosity of the measured fluid in a course of measurement of the measured fluid using the frequency oscillator with an independent or further additional meter; during the course of measurement of the measured fluid with the frequency oscillator, determining at least a measured value for the relevant parameter, a function value required or determined through the measured value obtained for the dynamic viscosity on the calibration curve or in the calibration table matches a characteristic value which is required or determined through an obtained measurement value for the quality and/or the attenuation on the calibration curve or the calibration table; and evaluating a result of a comparison with respect to a presence of any filling errors or is used to determine a possible filling error of the frequency oscillator.