Factors Affecting Measurement Accuracy of Ultrasonic Flow Meter and Solutions

Abstract: Factors and solutions that affect the measurement accuracy of ultrasonic flowmeters are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Abstract: Accuracy is an important indicator of measuring instruments. In the flow measurement of ultrasonic flowmeters by time difference method, the sources of errors mainly come from several aspects. This paper introduces several errors and their solutions in detail. Accuracy is an important indicator of measuring instruments, in the time difference method. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the factors and solutions that affect the measurement accuracy of ultrasonic flowmeters. Accuracy is an important indicator of the measuring instrument. In the flow measurement of the time difference ultrasonic flowmeter, the error sources mainly come from several aspects. This article introduces several errors and their solutions in detail. Accuracy is an important indicator of the measuring instrument. In the flow measurement of the time difference ultrasonic flowmeter, the source of error mainly comes from the following aspects: (1) The influence of machining accuracy and temperature changes on the mechanical size. The machining accuracy and temperature stability of mechanical parameters such as sound path angle, pipe diameter D, and sound path L have a direct impact on the flow measurement. During the measurement, they change with the temperature. This error can be minimized by precision machining, reasonable material selection and reasonable structural design. (2) The influence of temperature change on the flow rate. The propagation speed of the ultrasonic wave increases with the temperature of the fluid, which will cause errors in the measurement. The influence of fluid temperature change on the accuracy can be automatically compensated by using the temperature compensation method by measuring the temperature of the fluid and calculating the temperature compensation mathematical model. (3) Errors in electrical characteristics. The unstable operation of the device and the low precision of the counting circuit will bring errors to the flow measurement. In order to reduce this error, we choose a 100MHz, high-precision, high-stability quartz crystal oscillator as the clock reference signal, and choose a large-scale high-speed programmable logic device (CPLD) to achieve complex logic control and high-precision timing functions. To achieve system stability and reliability. ⑷ The change of echo waveform and amplitude change brings errors. This change will change the timing comparison point of the binarization circuit of the ultrasonic flowmeter, resulting in waveform error. This kind of error is difficult to overcome by hardware method, and must be solved by introducing intelligent analysis algorithm by means of software method. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Factors and Solutions that Affect the Measurement Accuracy of Ultrasonic Flow Meters'

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[拓展名称] include a great variety of devices with a wide range of complexity: from simple low flow turbine flow meter used since prehistoric times to the complex of modern mechanized coriolis density meter.