What are the advantages and disadvantages of ultrasonic flow meters

Abstract: The information on the advantages and disadvantages of ultrasonic flowmeters is provided by excellent flowmeter and flowmeter manufacturers. Ultrasonic flowmeters, with their high accuracy, unobstructed measurement, and low total cost of ownership, are rapidly becoming the first choice for flow measurement, especially hydrocarbons, and are gaining popularity in the oil and gas sector. Ultrasound. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the advantages and disadvantages of ultrasonic flowmeters. Ultrasonic flowmeters, with their high accuracy, unobstructed measurement, and low total cost of ownership, are rapidly becoming the first choice for flow measurement, especially hydrocarbons, and are gaining popularity in the oil and gas sector. Ultrasonic flowmeter is a very convenient flow meter, especially on large-diameter pipelines. Portable ultrasonic flowmeters can install the probe on the outer surface of the pipeline to achieve continuous flow without destroying the original pipeline to measure the flow, so it is widely used by users. Welcome. 1 The working principle and composition of the ultrasonic flowmeter When the ultrasonic wave propagates in the flowing fluid, it carries the information of the fluid velocity. According to the detection method, it can be divided into different types of ultrasonic flowmeters such as propagation velocity difference method (time difference method, phase difference method and frequency difference method), Doppler method, beam shifting method, noise method and correlation method. There are two main types of measurement methods that are most commonly used at present: the time difference method and the Doppler effect method. Ultrasonic flowmeter consists of three parts: ultrasonic transducer, electronic circuit and flow display and accumulation system. The ultrasonic transmitting transducer converts electrical energy into ultrasonic energy and transmits it into the fluid to be measured. The ultrasonic signal received by the receiver is amplified by the electronic circuit and converted into an electrical signal representing the flow, which is supplied to the display and accumulating instrument for processing. Display and accumulation, thus realizing the detection and display of flow. 2 Advantages (1) The external clip-on ultrasonic flowmeter can realize non-contact flow measurement, even if it is a plug-in or inside-mounted ultrasonic flowmeter, its pressure loss is almost zero, and its convenience and economy of flow measurement are the best. of. (2) The ultrasonic flowmeter can measure water, gas, oil and various media, and its application field is very broad. (3) The manufacturing cost of ultrasonic flowmeter has almost nothing to do with the caliber, and it has the comprehensive competitive advantages of reasonable price and convenient installation and use in large-caliber flowmeter measurement occasions. (4) The portable ultrasonic flowmeter can realize the flow measurement of a flowmeter on pipelines of various pipe diameters and materials. It is the preferred type of flowmeter for online calibration, comparison or period verification as a standard meter. (5) The ultrasonic flowmeter has the convenience of traceability based on the principle of flow measurement based on the two basic physical quantities of length and time. It is foreseeable that it will surpass other flowmeters and become the carrier of flow standards and even flow benchmarks. (6) The operation energy consumption of the ultrasonic flowmeter is very small, which can easily realize long-term battery power supply. In addition, the advanced intelligent host can easily carry out network wireless communication, and its application prospect is broader. 3 Disadvantages (1) The current shortcomings of ultrasonic flowmeters are mainly that the temperature range of the measurable fluid is limited by the temperature resistance of the ultrasonic transducer and the coupling material between the transducer and the pipeline, and the transmission of the measured fluid at high temperature. Raw data on sound velocity is incomplete. At present, my country can only be used to measure fluids below 200 ℃. (2) The anti-interference ability is poor, and it is easily affected by ultrasonic noises such as bubbles, scaling, pumps, etc., resulting in poor accuracy. If the above situation occurs, the accuracy will be deteriorated in light, and the meter will not display in serious cases. (3) In addition, the measurement circuit of the ultrasonic flowmeter is more complicated than that of the general flowmeter. This is because the flow velocity of the liquid in general industrial measurement is often several meters per second, and the propagation velocity of the sound wave in the liquid is about 1500m/s, and the change in the velocity of sound brought by the change of the flow velocity (flow) of the measured fluid is also 10- 3 orders of magnitude. If the accuracy of measuring the flow rate is required to be±1%, the measurement accuracy of the speed of sound needs to be in the order of 10-5 to 10-6, so it must have a perfect measurement circuit to achieve this, which is why the ultrasonic flowmeter can only be achieved under the premise of the rapid development of integrated circuit technology. reasons for practical application. (4) The installation is unknown, and the incorrect installation method will affect the measurement accuracy. (5) The service life is short, and the general accuracy can only be guaranteed for 2 years. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'What are the advantages and disadvantages of ultrasonic flow meters'

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