Flow meter error: Difference between revisions

Revision as of 20:44, 5 April 2012

Revision as of 20:52, 5 April 2012

Line 1:

In [[flow measurement]], flow meter error is typically reported by a percentage indicating non linearity of the device. This can be expressed as either a +/- percentage based on either the full range capacity of the device or preferably as a percentage of the actual indicated flow.

== Accuracy of Fullfull Scalescale ==

If a meter’s accuracy is based on a percentage of its full reading capability, the error is a fixed value. For example; an error of 0.5% of full scale, in a 100 gal/mingallon per minute (gpm) device is +/- 0.5 gpm. This is the uncertainty all of the time, so as you move away from the full scale capability, the 0.5 gpm error becomes a much larger percentage. At 50 gpm, you are risking a 1% error. At 10 gpm you have a potential 5% error.

==Accuracy of Readingreading==

If the device has an error expressed as a percentage of the actual flow, then a 0.5% error of 10 gpm is only +/-0.05 gpm; a 10 times better result. <ref>http://www.maxmachinery.com/frequently-asked-questions</ref>

{{Reflist}}

{{Fluiddynamics-stub}}

[[Category:Fluid dynamics]]