A METHOD AND APPARATUS FOR CHECKING IN SITU THE CALIBRATION OF A DEVICE FOR MEASURING THE VALUE OF A VARIABLE PROPERTY

摘要

A method of checking in situ the calibration of a plurality of measuring instruments uses a calibration verification device (20) to measure a trial output of an attached instrument (10). This is repeated for other instruments, and all the information forwarded to a remote server (40) via the Internet. By repeating the calibration of the same instrument at different times, a calibration history record for each of the instruments under test can be built up.