Why an instrument should be calibrated ?
The calibrations allow you to determine the error of indication of instruments in order to ensure more precise and reliable measurement results.
The calibrations are carried out by comparing the indication of the instrument, or the value represented by a sample, with the measurement of corresponding known values with the relative uncertainties.
The calibration process of instruments and samples by laboratories accredited according to ISO / IEC 17025 consists in the comparison with a higher level reference sample and thus allows the measurements they produce to acquire the fundamental property of the metrological traceability to national or international samples.
Calibration is necessary for the compliance of a measuring equipment with the requirements for their use.
Normally, equipment calibration is performed:
• Before they are put into service;
• When adjustments or repairs are made;
• If foreseen by the contract with the client, before and after the setting up.
The outcome of the calibration is reported on the calibration certificate issued at the end of the activity.
The accreditation of the laboratories that perform the calibrations ensures the metrological traceability of national or international samples over time.
The ultimate goal is to reduce the margins of error for achieving more precise and reliable measurements.