Talking about the Accuracy Class Division of Flow Meters

Abstract: A brief introduction to the classification of flow meter accuracy grades is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. 1. The country uses the absolute value of the maximum relative percentage error of the instrument as the accuracy level, among which: the accuracy of the first-level standard instrument is: 0.0050.020.05 The accuracy of the second-level standard instrument is: 0.10.20.350.5 for general industry The accuracy of the meter is: 1.1.5. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on the classification of flowmeter accuracy grades. 1. The country uses the absolute value of the maximum relative percentage error of the instrument as the accuracy level, among which: the accuracy of the first-level standard instrument is: 0.0050.020.05 The accuracy of the second-level standard instrument is: 0.10.20.350.5 for general industry The accuracy of the instrument is: 1.1.52.54.0 relative percentage error = (measured value of the north survey parameter - standard value of the parameter on the north side) / (the upper limit of the ruler - the lower limit of the ruler) * 100% 2. my country How are the instrument accuracy grades divided? Basic error: Basic error, also known as reference error or relative error, is a simplified relative error. The basic error of the instrument is defined as: basic error = (maximum absolute error/meter range) * 100 == (indication value of the detection instrument - true value of the measured value) MAX / (measurement upper limit - measurement lower limit) * 100% accuracy (referred to as Accuracy) In order to facilitate the transfer of the value, the country uniformly stipulates the accuracy (precision) grade series of the instrument. Remove the basic error of the instrument“±”number and“%”No., it can be set into the national unified instrument accuracy grade series. At present, the commonly used accuracy grades of instruments produced in my country are 0.005, 0.02, 0.05, 0.1, 0.2, 0.4, 0.5, 1.0, 1.5, 2.5, 4.0, etc. If the basic error of a temperature measuring instrument is±1.0%, it is considered that the accuracy level of the instrument conforms to level 1.0. If the basic error of a temperature measuring instrument is±1.3%, it is considered that the accuracy level of the instrument conforms to level 1.5. The smaller the series, the higher the precision (accuracy). The accuracy level of instruments used in scientific experiments is above 0.05; the instruments used in industrial testing are mostly 0.1 to 4.0, and the standard meters used for calibration are mostly 0.1 or 0.2, and those used on site are mostly 0.5 to 4.0. Industrial testing instruments are mostly in the 0.1 to 4.0 level. I have seen the following 3 different statements in different places: 1. my country's industrial instrument grades are divided into seven grades: 0.1, 0.2, 0.5, 1.0, 1.5, 2.5, and 5.0, and are marked on the scale or nameplate of the instrument. 2. my country's electrical instruments are divided into seven levels: 0.1, 0.2, 0.5, 1.0, 1.5, 2.5, and 5.0. 3. The instrument accuracy grades unified by the country are: 0.005, 0.02, 0.05, 0.1, 0.2, 0.35, 0.4, 0.5, 1.0, 1.5, 2.5, 4.0, etc. The above is the whole content of this article, you are welcome to inquire about our factory flow Type selection, quotation, etc. 'A Brief Discussion on the Accuracy Classification of Flow Meters'

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