Is there a national standard for the metering accuracy of tap water meters?
The new national standard "closed water meter water flow in full pipeline measurement of drinking cold water and hot water meter gb/t 778 - 1 - 2 - 3 - 2007", instead of the original water meter national standard "cold water meter gb/t 778 - 1 - 2 - 3 - 1996" [1], launched in May 1, 2008. Compared with the new national standard, the original national standard changed greatly, and there were nine aspects of change, including the re establishment of the flow parameters and their relations of water meters". The change in this aspect will directly affect the metering requirements (measurement characteristics, maximum allowable errors) and technical requirements (material and structure, durability, calibration device) of water meters. Therefore, the reasonable selection of the flow parameters of the water meter is an important basis for the measurement, technology, test and verification of the water meter. It is also an important sign of the quality level of the water meter.
The national standard of water meter water meter flow parameters and the relationship between re established, and using combined flow meter parameters is an important symbol of the level of water quality, water flow parameters in the process of full implementation of the new national standard of water meter in first encounter how to choose the problem is a complex problem, through a large number of tests, preparation of flow parameters based on the experimental research on the "value" and "optional values", so as to provide enterprise and industry directly using "digital" guidelines, this paper analyzes the basic methods and procedures for the guidelines of how to use the.
The measuring accuracy of water meter has national standard.
