Application of Dayu Electronics Compact Doppler Flowmeter in Irrigation District Culvert
Compact Doppler Flowmeter in Irrigation District Culvert
Project Background: Flow monitoring project in an irrigation district in Guangdong Province
On-site conditions: Water from the main canal flows downstream through a discharge culvert pipe. After the downstream outlet, there are nursery plants and irregular channels that are not suitable for installation. This is the only feasible location, as shown below: The discharge culvert has a diameter of 260 mm, is a regular circle, and has good flow conditions.
Customer requirements: Measure the discharge flow (instantaneous and cumulative) through the culvert pipe, and transmit the data via RTU to the management center to provide data support for water volume billing.
Product selection: Based on the actual site conditions, we recommended the compact Doppler Z-type 0°.
Product advantages:
● Compact size: Self-transmitting and self-receiving mode greatly reduces structural dimensions, allowing low-water-level measurement.
● Two depth measurement options: Pressure-based depth measurement and backup ultrasonic depth measurement.
● Signal strength indication: Can distinguish conditions such as siltation, low water, and material buildup on site.
● Instantaneous flow calculation: Capable of calculating flow for circular, rectangular, trapezoidal, and irregular channel types.
● Uses the velocity-area method, which imposes no requirements on channel shape and is suitable for circular, rectangular, or non-standard weir/flume cross-sections.
● Easy maintenance: During water supply periods, the Doppler ultrasonic flowmeter probe is fully submerged at the bottom, reducing the risk of external damage; during no-flow periods, an optional protective cover can be used for probe protection.
● Easy installation
Installation precautions:
1. For the compact Z-type, the probe should be parallel to the bottom at 0°.
2. The water level should be at least 5 cm above the sensor top, and there should be no obstructions within 2 meters in front (water level higher than 5 cm). As shown in the figure below:
Dayu Electronics products mainly fall into four categories: industrial control instruments, industrial sensors, marine equipment, and ultrasonic transducers. Application scenarios: ultrasonic distance measurement, monitoring of water level/flow velocity/flow rate/mud level/water depth, underwater communication/positioning/obstacle avoidance.