Calibration, why and how?

Several definitions have been provided for the calibration of national standards in section "General metrology" calibration is defined as: comparison with a standard reference laboratory instrumentation under standard conditions to ensure the accuracy and integrity, and determining the error rate by compared to the standard and set the standard. In fact create effective system calibration parameters to control the accuracy of instruments and test devices, measuring instruments and all equipment that affects their performance on the quality of that in order to ensure the implementation of international standards used measurements. Control and maintenance of process measurement done by the measuring device is required. Usually by uncertainty over time and with repeated use increases. Identify the gradual growth and increased uncertainty it easily possible unless underwritten by users. The ultimate goal of establishing calibration traceability as measurement and control system has been in international trade is essential. Traceability is: Ability to communicate the result of a measurement standard or a national and international reference, through a continuous chain of comparisons, all of which have certain uncertainty in national or international event or marked.