The Need for Calibration in Precision Machines
The Instrument industry is heavily dependent on measurements and their accuracy. The various instruments like od micrometers are required to adhere to the industry standards. There are several industries that require high precision machines likethe medical industry, aerospace industry, gas and oil industry, military and defense industry and electronic equipment industry. With variation even in a small amount can lead to huge loss or mishaps. Thus the measuring instruments like depth gages for sale must remain accurate and precise.
These instruments are often subject to monitoring and testing in order to get perfect and exact results. For such purpose,the process called calibration is brought to use.Calibration is the activity through which we compare the instruments and their measurement with the established standards to check for their accuracy. Thereafter any discrepancy found in measurement is properly recorded and documented. Furthermore, analysis is done and adjustments are made based on these findings.
The Process of Calibration
During the calibration, the instrument is tested for some known values which are called calibrators. The resultant values are then compared with the standard values to understand the variation in measurement techniques used by the instrument. A relationship is then developed and the required adjustment is done if needed. These calibrators can vary with the industry and the product required for the measurement. The calibration includes the testing at those focal points within the operating range of the instrument which are specified by the manufacturer for testing. This process thereby eliminates the inherent performance error in the examined instrument.
Is Calibration Necessary?
Calibration is needed to obtain the amount of error or deviation in measurement during the evaluation process performed by the instruments. The professionals can always adjust the actual measurements obtained with the help of this standard deviation to reflect the true dimensions.The calibration is often needed from time to time for the instruments.The instruments might be new or have gone for some repairs. There might be some critical measurement to be done or they have just reached the warranty period. It could also be done where the instruments have gone awry due to malfunctioning or remain unused over a long period of time. Whatever be the reason, calibration done frequently on the instruments makes them accurate and precise. They are not necessarily adjusted after each process of calibration, as it involves a lot of time and funds to correct them. Even when they are not adjusted, calibration can give a standard operational deviation in results. So professionals can estimate the true values.
Calibration requires a number of standards to follow. They can vary from national, international, intrinsic to some consensus standards according to the requirement. However, there has to be some tractability in terms of procedures and documentation to correlate them with the existing standard of measurement representing the quantitiesof interest. The tractability also requires the manufacturing companies to validate the calibration process as well as its documentation according to existing best practices.They need to present the tractability documents along with the calibration report to their customers.
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