Digital ultrasonic flowmeter

With the continuous improvement of my country's automation level, our requirements for automated measuring instruments have also increased. From the beginning, as long as the measurement range can be roughly measured, to the pursuit of higher accuracy; from the beginning, unable to adapt to complex working conditions, to the development of various corrosion-resistant materials; from the first use of pointer readings to the current accuracy of digital instruments reading. Digital ultrasonic flowmeters have been widely used in water flow measurement, industrial circulating water, air-conditioning refrigeration circulating water, raw water, high-pressure water, tap water, etc. The ultrasonic flowmeter adopts the measurement principle of 'time difference methodThe signal passes through the pipe wall and the fluid to the sending sensor. At this time, because of the time difference due to the flow velocity, the flow velocity can be calculated based on the time difference, and then the flow rate can be calculated. The structure of digital ultrasonic flowmeter is mainly divided into ultrasonic signal generator, signal receiver, information processing circuit and flow display. Among them, the ultrasonic signal generator first sends a signal, receives the sensor to receive the signal, obtains the time difference, and processes the ultrasonic information according to the information processing circuit, transmits the flow to the display screen in the form of an electrical signal and displays the result.　　 Due to the non-contact measurement principle of the digital ultrasonic flowmeter, it mainly has the following advantages: 　　 1. Simple structure, easy to install, use and maintain. Ultrasonic flowmeters can be clamped on the outside of the pipeline for installation, without the need to modify the pipeline, which provides convenience for temporarily checking the flow in the pipeline. 2. It is suitable for large round pipes and rectangular pipes. In principle, it is not limited by pipe diameter and has good versatility. The same meter can measure pipe flow of different pipe diameters. It is not necessary to strictly consider the pipe material and wall thickness when using it, and its cost is basically It has nothing to do with pipe diameter and is more suitable for occasions with large pipe diameter and large flow.　　3. As long as the liquid to be tested can propagate sound waves, it can be measured outside the tube. This non-contact measurement method has no pressure loss, does not damage the flow field, and the parts are not corroded and worn by the fluid. 　　4. The instantaneous flow rate and cumulative flow rate of the measured fluid can be directly given, and analog or digital output can be used. 5. There is almost no requirement on the medium, as long as the fluid that can propagate sound waves can be measured with ultrasonic flowmeters, it is suitable for a variety of fluids, except for common fluids such as water and petroleum, and especially suitable for other conditions that are inconvenient to measure, such as high temperature. High-pressure, corrosive liquid, high-viscosity liquid or gas, etc.; and it can measure non-conductive liquids, and is a supplement to electromagnetic flowmeters in terms of unobstructed flow measurement. 6. In addition to measuring flow rate and flow rate, it can be used in conjunction with a microcomputer to make it intelligent, and it can set various pipes and fluid parameters, and can also automatically perform other fluid parameters such as composition, concentration, speed, etc. Comprehensive measurement.　　 took everyone to understand some related knowledge of digital ultrasonic flowmeter, I believe that everyone hopes to be used in their own industrial control process, and this requires more professional selection knowledge. If you want to continue to understand this aspect, the editor can recommend a place for everyone-Kaidi Sensing Technology Co., Ltd. has been engaged in the production of automation instruments for 12 years. In-house professional engineers have contact with any complex working conditions. Field experience can solve many industrial problems for everyone. You can also consult them for product selection and installation issues.
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