Measurement principle of ultrasonic open-channel flow meters
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An ultrasonic open-channel flow meter, also known as a sewage flow meter, is a common type of instrument for measuring liquid flow. It is widely used in urban sewage treatment, water resources and environmental protection quality testing, as well as in various industries such as petroleum, pharmaceuticals, chemicals, and agriculture. Since the ultrasonic open-channel flow meter uses a non-contact measurement method, it can be applied in various complex field conditions. The feasibility of measuring special media with high temperatures, high viscosity, and strong corrosivity will also **improve**. An ultrasonic open-channel flow meter consists of two parts: the measuring component and the channel component. Most of the measurement sites are also natural flow channels without pressure or pipelines. Conventional flow meters are not suitable for this purpose; channel flow meters utilize the special design of the channel to introduce the fluid to be measured into it, thereby straightening the flow of the fluid and establishing a corresponding relationship between the fluid level and the flow rate. The water level height of the fluid as it flows through the channel is detected using an ultrasonic probe installed directly above the channel; the data processing system then automatically retrieves the corresponding value for that water level from the table stored in it, thereby determining the flow rate of the medium. The structural dimensions of the channel itself determine the height at which the sensing probe is installed and the measurement range of the flow meter; this ensures that when the channel is installed in different channels, the flow rate corresponding to the same liquid level remains consistent. Flow metering is one of the components of measurement science and technology, and it is closely related to the national economy, national defense construction, and scientific research. Doing this work well plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in today’s era of energy crises and increasing automation in industrial production, the significance and role of flow meters in the national economy have become even more evident.
The channel must be extremely regular; stable flow velocity is also crucial. How can this be ensured?
This post was last edited by 1111111 on 2018-1-9 at 23:23 to adjust the dimensions of “Yan Cao”, with **standard international specifications. . . For small-scale use, in small ditches and channels, manufacturers offer ready-made products. For large-scale applications, where it’s necessary to measure the flow rate of rivers and large streams, calculations can be done using the formulas specified in national standards; a “Yan channel” can be constructed to measure flow rates and water levels, and there’s no need to use ultrasonic level sensors. – Radars are crazy, ultrasonic sensors are also crazy; they’re both a pair of intermittent lunatics. With lightning and thunder, heavy rain and snow, those crazy devices give incorrect readings, so what’s the point of measuring flow rates at all? In hydrology and hydraulic engineering, many “Yan channels” are equipped with submersible level sensors that are placed inside the measurement wells. Submersible level sensors represent a highly reliable and maintenance-free method for measuring water levels. In remote areas, unattended RTU devices transmit the measurement data directly via satellite. Boss Dong from the chemical plant must have let chemistry confuse his mind; he can’t tell what a good level gauge is and what isn’t. You worthless boss—every day you make the instrument technicians work hard, making them climb into tanks to deal with radars and ultrasonic devices, cleaning probes when the power goes out… It doesn’t increase production or efficiency, nor does it bring any positive contribution to the party. The instrument technicians are always complaining about you and cursing you. In my opinion, being a boss like you means being an idiot; even a madman could fool you. Sigh~~~ Your intelligence is as poor as that of a reaction kettle, right? :lol, hahaaha
This post was last edited by huio1983 on 2018-1-9 at 23:29. The slot has rectification capability within a certain range.
What is called Yan Cao? The original poster, please explain.
Yancao refers to a weir channel. . . Characters are used arbitrarily, yet there seems to be some logic behind it. .