How to ensure the measurement accuracy of the flow meter

Abstract: The information on how to ensure the measurement accuracy of the flow meter is provided by the excellent manufacturers of flow meters and flow meters. Flow measurement accuracy refers to the accuracy obtained by the flow measurement system, which is different from the accuracy of the flow meter itself. Only the flowmeter itself has good performance and high accuracy, and it does not necessarily achieve high measurement accuracy. To ensure the flow measurement system. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the article details on how to ensure the measurement accuracy of flowmeters. Flow measurement accuracy refers to the accuracy obtained by the flow measurement system, which is different from the accuracy of the flow meter itself. Only the flowmeter itself has good performance and high accuracy, and it does not necessarily achieve high measurement accuracy. To ensure the accuracy of the flow measurement system, in addition to reasonable selection, correct installation and debugging, and timely maintenance and maintenance, it is also effective to apply intelligent technology to properly compensate and correct the errors that may be introduced in the measurement part. method. For example, the temperature expansion coefficient of the liquid is compensated, the temperature, pressure and compression coefficient of the gas are compensated, the Reynolds number influence of the differential pressure flowmeter and the beam expansion coefficient are compensated, and the nonlinearity of the flow coefficient of various flowmeters is compensated. Compensation, compensation for the temperature influence of volumetric flowmeter and vortex flowmeter, compensation for the velocity distribution of ultrasonic flowmeter, etc. This compensation and correction is to use a systematic method to process the errors inherent in the detection part that cannot be overcome by itself, so as to eliminate or basically eliminate them. Practice shows that this method is simple, effective and promising. Among the many methods to ensure measurement accuracy, online real-flow calibration plays an important role. In the past, most of the flowmeters were calibrated by offline method. Although the accuracy of the flowmeter verified by this method is higher after error correction, the reference conditions of the pipeline during verification are different from those in actual use. There are differences in the fluid of the instrument, and the environmental conditions during the verification are different from the actual environment of the place where the instrument is used, resulting in additional use errors and reducing the measurement accuracy. Online real-flow calibration method is an effective method to solve this problem. For example, the standard volume pipe connection port is reserved in the construction stage of the oil product metering station. After the standard volume pipe is connected, the online real-flow calibration of each flowmeter in the metering station can be realized by switching the valve. Now, the method of on-line real-flow calibration is also required at the distribution station of natural gas. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to Ensure the Measurement Accuracy of Flow Meters'

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