Analysis of the factors determining the error of fl ow with constricting devices on channels of head pumping stations

Abstract

In the conditions of increasing scarcity of water resources, the problem of their economy and rational use is of paramount importance. The restructuring of the existing water metering system should be carried out in a comprehensive and step-by-step manner. When accounting for water, the greatest diffi culty is the problem of measuring water flow. The paper summarizes and presents the methods of error estimation that allow us to objectively assess the compliance of flow meters with technical conditions at the stages of manufacture, installation and operation. The effciency of water metering is largely determined by the level of operation of measuring instruments. In this regard, the unifi cation of the process of collecting, processing and presenting information should play an important role. The purpose of the research is to substantiate a mathematical model of the error of flow meters with tapering devices by analogy with the methods regulated in the current regulatory documents.