The Implementation of an Automatic Measurement Station for the Determination of the Calibration Intervals for a DMM

In the present work the authors present a procedure for the determination of the optimal calibration intervals of a measurement instrument according to the reference Standard. Generally speaking, the goal of a calibration process is to reduce out-of tolerance occurrences to an acceptable level with respect to the desired quality target. The approach is based on the monitoring of the capability of an instrument in making measurements in conformity with the accuracy declared in the datasheet provided by the manufacturer. Periodic actions are required for the metrological confirmation, effected in a laboratory of tests, using for this purpose a reference instrument. In this paper is presented the implementation of an automatic station of measurement which performs an original procedure able to forecast the time to wait for the next calibration process