What instrument meter scale performance metrics

Abstract: the flow meter scale instrument what performance information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. （ 1) Accuracy: also known as accuracy, namely the instrument of the accuracy of the measurement results close to the real value. Can be said with absolute error and relative error: (1) the measured value of absolute error = - Real value (2) the relative error of the absolute error/true value = any instrument are not absolute. More flow meter manufacturers choose model price quote you are welcome to inquire, here is what meter scale instrument performance indicators for details. （ 1) Accuracy: also known as accuracy, namely the instrument of the accuracy of the measurement results close to the real value. Can be said with absolute error and relative error: (1) the measured value of absolute error = - Real value (2) the relative error of the absolute error/true value = no instrument can absolutely accurate measurement to the real value of measured parameters, can only strive to make the measured value is close to the real value. In practice, only using the high accuracy standard instrument to the indicated value as the real value of the parameter being measured, and measuring instrument of the indicated value with the standard instrument of the indicated value is the difference between the measurement error. Error value is smaller, the higher the reliability of the measuring instrument. （ 2) Repeatability: refers to the measurement under the condition of invariable condition, repeated many times with the same instrument on a particular parameter measurement, the measured value and the difference between the average percentage relative to the zui large scale range. This is an important index of stability of instruments, meters, generally need to test when put into operation and daily check. （ 3) Sensitivity: refers to the instrument measurement sensitive degree. Commonly used instrument and the quantity of output changes caused some changes in the measured parameters of the ratios of variation. （ 4) Response time: when the measured parameters change, the measured value of the instrument is always after a period of time to accurately represented, this paragraph and the measured parameter changes the response time of the lag time is instrument. Some expressed with time constant, Such as thermal resistance temperature measurement) Said, some with damping time ( Such as current meter measuring resistance) 。 （ 5) Zero drift and span drift: refers to the instrument to confirm the relative zero and zui after repeated measurement in a wide range, average value relative to the percentage of the range. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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