FAQs - IRRIGATION WATER DELIVERY & CONVEYANCE SYSTEMS
Q: What are some common devices used to measure flow?
A: Different methods to measure water flow for closed pipelines
include propeller meters, orifice, venture, or differential pressure meters, and
magnetic flux meters. Devices used to measure flow in open channels include
weirs and flumes, stage discharge rating tables, and area/point velocity
measurements. Ultrasonic devices, or travel time methods, may be used for both
open and closed channels. Consideration in using open and closed meter as well
as indirect methods requires attention to installation at each site. Improper
installation can lead to inaccurate measurements. Important to note: volumetric
measurements do not directly save water but they do provide information about
costs associated with water use and efficiency of irrigation systems.
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