Electromagnetic flowmeter accuracy testing and calibration methods

Project Overview

　　Electromagnetic flowmeter is a commonly used flow detection instruments, its accuracy directly affects the accuracy and stability of the actual application. In order to ensure the accuracy of electromagnetic flowmeter, often need to test and calibration. This paper mainly focuses on electromagnetic flowmeter accuracy testing and calibration methods to summarise and discuss.

　　Electromagnetic flowmeter accuracy testing refers to the electromagnetic flowmeter through the detection and testing, to determine the accuracy of its measurement of a process. Before electromagnetic flowmeter accuracy testing, you need to prepare some special testing equipment and instruments, such as standard electromagnetic flowmeter, standard instrumentation and so on. The testing process is generally divided into several steps such as pre-calibration preparation, electromagnetic flowmeter accuracy testing, error analysis and test report. Among them, electromagnetic flowmeter accuracy testing is the core content of the testing process, need to be measured by the standard fluid and comparison, to determine the flow measurement accuracy and error range of the inspected fluid.

　　Calibration is an important part of electromagnetic flowmeter accuracy testing. The purpose of calibration is through some scientific means, the electromagnetic flowmeter measurement system for adjustment and calibration, so that it reaches the predetermined measurement accuracy requirements. Electromagnetic flowmeter calibration can be divided into static calibration and dynamic calibration of two ways. Static calibration usually uses the standard material comparison method, through the detection of the standard flow rate and the error of the inspected flow rate, to determine the error range of the flowmeter and adjust the deviation. Dynamic calibration usually uses the comparison method or sinusoidal wave method, through the electromagnetic flowmeter dynamic response characteristics of the test and analysis, its adjustment and calibration.

　　In the electromagnetic flowmeter accuracy testing and calibration, need to pay attention to the following aspects. Firstly, professional testing instruments and equipment need to be selected to ensure the accuracy and reliability of the testing process. Secondly, in the calibration, need to follow the standard operating procedures and calibration procedures, in accordance with certain methods and steps for adjustment and calibration. Finally, the need to record the results of testing and calibration in a timely manner, to generate test reports, in order to facilitate follow-up tracking and management.

　　In short, electromagnetic flowmeter accuracy testing and calibration is an important means to ensure the measurement accuracy of electromagnetic flowmeter. Through the selection of professional equipment and follow the standard operating procedures, can effectively improve the accuracy and stability of electromagnetic flowmeter, but also to ensure that the production efficiency and product quality enhancement, has important practical significance.