This paper presents a small portion of the results from an active Water Research Foundation (formerly AWWA Research Foundation)
study in which the accuracy of commercially available 5/8 x 3/4-inch water meters was
determined over a wider range of flow rates than current standards specify. At present, positive
displacement (nutating disc and oscillating piston), multi-jet, single-jet, and fluidic oscillator
meters are available for use in the United States. While some manufacturers have multiple meter
design offerings, others focus on a specific metering chamber design. The research component
summarized in this paper investigated one hundred and fifty new meters. Although a larger
sample of each manufacturer's offering would be desirable, six identical meters were used as the
sample size for any given meter resulting in 25 different meter designs being tested.
The results indicated that most meters perform acceptably at flow rates up to thirty percent
greater than the published maximum AWWA standard flow rate. On the other hand, the results
were varied when the meters were accuracy-tested at flow rates that were well below the
minimum AWWA standard flow. A significant concern was made manifest after it was
determined that a considerable number of new meters did not meet the minimum standard for
accuracy at the minimum, intermediate and maximum AWWA standard accuracy test flow rates.
This paper summarizes the testing completed and presents the accuracy results of the new 5/8 x
3/4-inch meters tested as part of an active Water Research Foundation study. Includes 12 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 4.6 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 62 |
| Published : | 11/01/2009 |
