Improvement of the State Verification Schedule for Flow and Quantity Measuring Instruments-Reference-Cited by-同舟云学术

Improvement of the State Verification Schedule for Flow and Quantity Measuring Instruments

Published:2023-07-19 Issue:3 Volume:19 Page:7-20
ISSN:2687-0886
Container-title:Measurement Standards. Reference Materials
language:
Short-container-title:Stand. obraz.

Author:

Korneev R. A.¹^ORCID

Affiliation:

1. VNIIR – Affiliated Branch of D. I. Mendeleyev Institute for Metrology

Abstract

The article describes the historical and metrological aspects of the development of a system of metrological support of means and systems for measuring the flow and amount of liquid in the field of state regulation of ensuring the uniformity of measurements. The expediency of the method of indirect measurements in the transfer of units of flow and the amount of liquid for verification installations with weighing devices is substantiated, taking into account the sources of uncertainty due to dynamic influencing factors on the metrological characteristics of verification installations with weighing devices along with the methods of direct comparison and comparison using a comparison standard. The methodological approaches used in the presence of impacts on the static model of measuring the flow rate and amount of liquid due to dynamic changes in the main parameters of the liquid flow (fluctuations in the flow rate, temperature, pressure of the liquid in the pressure pipeline) and hydrodynamic features when the liquid flow flows out of the nozzle of the flow switch nozzle (formation a uniform velocity profile, and the degree of liquid filling of the nozzle exit).

Publisher

Ural Research Institute of Metrology (UNIIM)

Subject

General Medicine

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