What are the performance indicators of the flow meter

Abstract: The information on the performance indicators of flow meter meters is provided to you by excellent flow meter and flow meter manufacturers. (1) Accuracy: also known as accuracy, that is, the accuracy of the measurement results of the instrument close to the real value. It can be expressed by absolute error or relative error: ①Absolute error=measured value-true value ②relative error=absolute error/true value No instrument can be absolute. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the performance indicators of flowmeters. (1) Accuracy: also known as accuracy, that is, the accuracy of the measurement results of the instrument close to the real value. It can be expressed by absolute error or relative error: ①Absolute error=measured value-true value ②relative error=absolute error/true value No instrument can measure the true value of the measured parameter absolutely and accurately, only the ability to find the measured value close to the true value. In practical applications, the indication value of the standard instrument with higher accuracy can only be used as the true value of the measured parameter, and the difference between the indication value of the measuring instrument and the indication value of the standard instrument is the measurement error. The smaller the error value, the higher the reliability of the measuring instrument. (2) Reproducibility: It refers to the percentage of the difference between each measured value and the average value relative to the maximum scale range when the same instrument is used to repeatedly measure a certain parameter under the same measurement conditions. This is an important indicator of the stability of instruments and meters, and generally needs to be checked when they are put into operation and during daily calibration. (3) Sensitivity: refers to the sensitivity of the instrument measurement. It is usually expressed by the ratio of the change of the output of the instrument to the change of the measured parameter that causes the change. (4) Response time: When the measured parameter changes, the measured value indicated by the meter can only be accurately expressed after a period of time. The time lag between the measured parameter and the change is the response time of the meter. Some are expressed by time constant (such as thermal resistance temperature measurement), and some are expressed by damping time (such as ammeter to measure resistance). (5) Zero drift and span drift: refers to the percentage of the average change value relative to the span after multiple measurements of the relative zero point and the maximum span confirmed by the instrument. 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 performance indicators of flow meters?'

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