Questions regarding integrated ultrasonic open-channel flow meters

The working principle of a open-channel flow meter is to utilize open-channel technology; by measuring the liquid level height of the fluid, and then using a processor built into the instrument to perform calculations, the flow rate can be determined. You can search online for information on the installation location of standard open-channel flow meters. When rainwater flows through, it is necessary to construct a standard channel; since it is a contactless measurement method, channel flow meters can be used in harsh environments, and ultrasound is not affected by the intensity of light. The open-channel flow meter measures the distance between the probe and the liquid surface being measured, thereby determining the actual water level based on standard open-channel dimensions. Since there is a certain proportional relationship between this water level and the flow rate, the liquid flow rate can be determined using mathematical formulas.

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1. What is one installation method and principle of an integrated ultrasonic open-channel flow meter? Top-mounted type, used to measure the liquid level in the water weir channel; it works in the same way as an ultrasonic level gauge. Note that it must be placed perpendicular to the water surface. 2. Can an integrated ultrasonic open-channel flow meter be installed under a manhole cover to measure flowing rainwater? Will the absence of light inside affect the measurement? Of course it can~~ Theoretically, as long as it has the appropriate protection rating, it won’t be affected even if it’s submerged in water; let alone under a manhole cover. Since flow is measured indirectly by detecting the liquid level, a water weir is necessary for it to function. Light has absolutely no impact on ultrasonic sensors, let alone any effect on their performance. 3. If the liquid is turbulent, does this affect logarithmic measurements? Is calibration required? The impact of liquid fluctuations is not significant; calibration is necessary. Once it’s properly fixed, calibration once every one or two years is sufficient, after all, it’s not a precision instrument.

Thank you very much for your answer, thanks!