Changsha Panran Technology Co., Ltd.
The principle and basis for determining the calibration period of measuring instruments
Source: | Author:SW | Published time: 2024-12-19 | 10 Views | Share:

To determine the calibration period, two opposing basic principles must be followed:


The first is to minimize the risk of exceeding the allowable error of the measuring instrument during this cycle;


Second, it is economical and reasonable, so that the calibration cost is as least as possible. In order to find the best value of the balance between the above risks and costs, it is necessary to use scientific methods, accumulate a large number of experimental data, and determine after analysis and research.


The basis for determining the calibration cycle of measuring instruments:


The determination of calibration cycles requires a variety of expertise, taking into account a variety of factors. If more than one cycle, it may cause deterioration of quality characteristics, which is due to mechanical wear, dust, performance and frequency of experiments. Sensitivity to changes in these factors depends on the type of measuring instrument. Good quality, may be less affected; Poor quality, may be affected more. Therefore, each laboratory should determine the calibration cycle of each measuring instrument according to the actual situation. The calibration period is determined by:


How often they are used. The use of frequent measuring instruments is easy to reduce its metrology performance, so the calibration cycle can be shortened to solve the problem. Of course, improving the nature of the raw materials used in measuring instruments, manufacturing processes and service life are also important means.


Measurement accuracy requirements. For units requiring high accuracy, the calibration cycle can be appropriately shortened. Each unit should decide according to its own actual situation, what level of accuracy is needed, and what level is selected. The high is high, the low is low, not blindly pursue high accuracy, so as not to cause unnecessary losses; However, the accuracy is too low to meet the requirements of use, bring losses to the work, and it is not desirable.


Use the maintenance capacity of the unit, if the maintenance of the unit is better, shorten the calibration cycle appropriately; On the contrary, it is longer.


Measure the performance of an instrument, especially the level of long-term stability and reliability. Even if the same type of measuring instrument has poor stability and reliability, the calibration cycle should be shorter.


For measuring instruments that have a greater relationship with product quality and special requirements, the calibration cycle is relatively short; On the contrary, it is longer.