Factory calibration certificate
A Factory calibration certificate is a document issued during the production process of the meter confirming the assignment metrological properties and maintaining measurement coherence. This document is issued only for brand new measuring instruments. The next metrological confirmation (calibration) is recommended within 12 months from the date of purchase, but not later than 24 months from the production date. The next metrological control is carried out by the Testing and Calibration Laboratory of Sonel S. A. and the issued document is called Calibration Certificate.