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The paper refers to the evaluation and calculation of the uncertainty of measurement in the calibration of secondary standard volume measures, with a ruler on the neck, which equips standard installation for liquids flow meter verification. Calibration involves assigning actual values to certain nominal values, materialized on a standard scale. For the design and construction of a secondary volume measure, it is necessary to take into account all metrological requirements related to the shape and materials from wh...

Calibrations of liquid flow meters are performed with primary standards that are based on measurements of the fundamental quantities; mass and time. Flow meters calibration are accomplished by timed collection of the measured mass of water flowing through the meter under test. Static gravimetric liquid flow meters calibration method is used as primary liquid flow standards. The method is based on the principle of measuring flow rate by static weighing and consists in: determining the initial mass of the weighing t...