Skip to main content

Peeling the Onion of Meter Accuracy Two Steps to Evaluating Flow Meter Data

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

It is a natural desire and has been past practice to evaluate a meter's accuracy by reviewing its output – a measured rate of flow (Q). Most users test a meter's Q reading merely by comparing it to the Q from other meters or primary devices, much the same way drivers compare speedometers by driving next to each other and comparing outputs. The readings in such comparisons will never agree exactly, just as two watches will not. Experience shows that a traditional Q-to-Q comparison seldom results in a clear understanding of source of any meter inaccuracy.

The technique presented in this paper offers an easy process for evaluation of meter accuracy without a second flow measurement device. The first step in evaluating accuracy of any instrument is to evaluate its measurable components, not its output. For a speedometer, measurable components are distance and time; for an open channel flow meter, they are depth and velocity. A determination of precision and bias is then made for each measurable component. This concept of evaluating a meter's precision and bias has been incorporated into the EPA Environmental Technology Verification (ETV) program in the flow meter verification protocol.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 01 January 2001

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more