This website uses a variety of cookies, which you consent to if you continue to use this site. You can read our Privacy Policy for
details about how these cookies are used, and to grant or withdraw your consent for certain types of cookies.
The Varying Accuracy of Palmer Bowlus Flumes
The accuracy of the depth-discharge relations for Palmer Bowlus flumes in not considered to be constant over the full range of flows.
- For large values of H/L (Ha point of measurement head / throat ramp top length) the estimated accuracy is +/- 3%
- For small values of H/L the estimated accuracy is +/- 5-6%
The decrease in accuracy reflects the increased importance (and uncertainty) of the Coefficient of Discharge (Cd) at low flows.
Also, smaller Palmer Bowlus flume sizes tend to be less accurate in general than larger Palmer Bowlus flumes sizes.
Source: Recommended Practice for the Use of Parshall and Palmer Bowlus Flumes in Wastewater Treatment Plants
Related Blog Posts
-
Expert Insights
Measuring Flow in a Palmer Bowlus Flume
-
Expert Insights
Some Sources of Error for Palmer Bowlus Flumes
-
Expert Insights
Visual Guide to Installing a Palmer Bowlus Flume
Explore more insights in our blog.
LOCATIONS IN ATLANTA, GA & BOISE, ID