Solution for Submerged Flow Monitoring in Raymond Irrigation District - Case Study

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Courtesy of Greyline Instruments Inc.

Raymond Irrigation District (RID) measures the flow rate of water delivered to over 46,000 acres of irrigated land and 300 municipal and agricultural water users in Southern Alberta, Canada.

Culverts Exposed Before Irrigation Season

Concrete Water Culverts Before Canal is in Operation

Most of the RID’s flow monitoring applications are in open channels or partially filled culverts. For help with this submerged culvert application they turned to the irrigation engineering firm Wilde Bros Engineering Ltd. of Welling Alberta for solutions. Wilde Bros selected Greyline DFM 5.0 Doppler Flow Meters for the project. The DFM 5.0 is available with a submersible QZ2L ultrasonic sensor and waterproof cable designed for continuous operation under water.

Water Culverts Submerged During Irrigation Season

Water Culverts Submerged During Irrigation Season

The DFM 5.0 sensors were installed with stainless steel mounting brackets screwed to the inside wall of the 30” concrete pipes.

Solar-Powered DFM 5.0 Electronics

Solar-powered DFM 5.0 Doppler Flow Meter Electronics Installed in Panel

Cables to the sensors were run in PVC conduit from solar-powered electronics in nearby panels. Each flowmeter is equipped with a 2-million point data logger so RID personnel can retrieve flow reports by plugging a USB memory stick into the instrument. The ultrasonic sensors are removed after each irrigation season to prevent damage from winter ice.

Mounting Bracket

Brackets Are Screwed Inside Each Concrete Culvert for Sensor Mounting

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