A large inventory of performance indicators of flow meters

Abstract: The large inventory information of flow meter performance indicators is provided by excellent flow meter and flow meter production and quotation manufacturers. The quality of a measuring instrument can be reflected by its accuracy, repeatability, sensitivity, response time, zero drift and span drift. (1) Accuracy: also known as accuracy, that is, the accuracy of the measurement results of the instrument close to the real value. Absolute error can be used. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on the performance indicators of flowmeters. The quality of a measuring instrument can be reflected by its accuracy, repeatability, sensitivity, response time, zero drift and span drift. (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: ① Absolute error = measured value - true 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) Response time: When the measured parameter changes, the measured value indicated by the instrument will always be accurately expressed after a period of time. The time lag between the measured parameter and the change is the response time of the instrument. 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). (3) Sensitivity: 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) 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. (5) 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. Flow meters have been in the industry for 30 years. The footprints of Chengfeng flowmeters are all over the country, and the sales volume of glass rotor flowmeters accounts for one-fifth of the country's sales volume. First of all, the results are inseparable from the quality of Chengfeng flowmeters. It is also inseparable from service. In fact, a very important point is that it is inseparable from technological innovation and is linked to the customer's ability to communicate and deal with problems. A product will be more or less in the middle from selection to production to use to the end of its life. If there are some problems, how to solve these problems requires perfect pre-sales service, after-sales service and technical service. The pre-sale service includes the introduction and selection of our products. At this time, Chengfeng Flowmeter must first understand the customer's situation, and give them the best solution, the most suitable product, and the right one is the best. Problems with flowmeters can be found directly. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'A large inventory of flow meter performance indicators'

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