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Calibration, the cornerstone of measurement
2020-08-20

  Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE Calibration is the first cornerstone to ensure the accuracy of test results. Without accurate measurement standards, the uncertainty of test data will be enlarged, thus affecting the accuracy of test results. Therefore, regular calibration is of vital importance for measurement and testing.

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So how do you calibrate, how often do you calibrate?

Calibration needs to send the calibrated equipment to a professional institution with calibration qualifications, such as Metrology Institutes, in various places or approved third-party calibration institutions. The issue of the calibration cycle is more complicated and should be determined according to the specific usage. CNAS-CL01 points out that the calibration certificate (or calibration label) should not contain recommendations for the calibration interval unless an agreement has been reached with the customer. This requirement may be replaced by regulations, which clearly stipulates that calibration laboratories cannot give recommendations for calibration cycles. Therefore, the calibration period can be determined by the laboratory according to the actual use of the measuring instrument, based on the principles of science, economy and accuracy.

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risk of exceeding the allowable error of the measuring instrument within the calibration period shall be minimized as far as possible;

Second, it is economical and reasonable to make the calibration cost as minimum as possible.

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The calibration period is usually determined from the following points: 1. The frequency of use. The more frequent use, the shorter the calibration period should be considered.

2. Requirements for measurement accuracy, units with high accuracy are required, and the calibration cycle can be appropriately shortened.

3. The performance of measuring instruments, especially the level of long-term stability and reliability.

4. The calibration period of the measuring instruments that have a great relationship with product quality and have special requirements is relatively short; on the contrary, it is longer.