Calibration of prover tanks making use of a Coriolis mass flow meter as the master meter

Calibration of volumetric proving tanks can be done using different methods. For the calibration of large proving tanks the master meter method can be used as a good alternative to the volumetric transfer method or the gravimetric method. When the master meter method is used in most cases a positive displacement meter is used. A better option is to make use a Coriolis mass flow meter as the master meter. Test data is presented of a calibration of a proving tank with a nominal volume of 500 L. Small repeatability figures can be obtained of consecutive calibration runs with a Coriolis mass flow meter. Also the linearity of the meter factor curve of the Coriolis mass flow meter makes this a better option for the master meter method.