Practical Water Delivery Measurement for Irrigation Irrigation Ultrasonic Open Channel Flow Meter is designed for irrigation turnouts, lined canals, distribution channels and farm water-delivery structures. Water districts need repeatable volume records across many remote sites, but sediment, algae and seasonal access make submerged instruments costly to service. An ultrasonic meter above a correctly built flume or weir helps verify allocations, compare scheduled and delivered water and detect abnormal losses. Affordable Non-Contact Monitoring at Control Structures The ultrasonic sensor measures liquid level without touching the medium. The controller converts that level into flow using the programmed equation for a Parshall flume, rectangular weir, equal-width weir or triangular weir, and displays both instantaneous flow and accumulated volume. Gallop lists automatic temperature compensation, adjustable interference shielding and multiple built-in channel algorithms. Standard product information also identifies 4-20 mA, RS485 and RS232 outputs, 24 VDC or 220 VAC supply options, and split waterproof or compact configurations. Compact and split arrangements allow the sensor to remain over the channel while the display is positioned where field staff can safely read and configure it. This page can naturally support buyer terms such as open channel flow measurement, ultrasonic level sensor, flow totalizer, flume flow meter and weir flow monitoring. Match the Meter to the Existing Channel Confirm the primary-device type and dimensions, available head loss, maximum upstream level and a calm approach section; clean the structure so sediment does not alter the hydraulic relationship. Choose power, totalizer units and communications for the local operating model, from a simple display to an RTU connected to a district telemetry network. Accuracy depends on correct flume or weir construction, a stable upstream approach, the correct zero reference and a clear acoustic path; foam, heavy vapor, turbulence and submerged primary devices require engineering review. Gallop shows magnetic-flow calibration and professional gas-calibration equipment in its factory material. Procurement teams should request the model-specific factory test report, serial traceability and final configuration sheet with the quotation.