GAMBICA Guide - T&M Sector - Ins & Outs of Instrument Calibration - 2025.pdf
01 January 2025
This GAMBICA Technical guide gives an overview of the Ins and Outs of Instrument Calibration.
The document discusses the importance of ensuring electrical testing instruments maintain accurate performance, particularly for audits or end-customer inspections. A calibration certificate is key evidence of this but should not be confused with a less detailed certificate of test. Calibration certificates provide detailed data, including measurements, tolerances, and environmental conditions, making them more useful for ensuring compliance.
How do you know that the electrical testing instrument you purchased some months or years ago is still performing accurately? This is a frequent question asked by accreditation companies during an audit and some end customers when an electrician is testing a building wiring installation.
In these circumstances a “calibration certificate” is usually requested as evidence. But what is involved in acquiring a certificate and does it have any real value?
While calibration certificates provide crucial evidence of an instrument's accuracy, regular checks and maintenance are vital for continued performance and compliance and this documents helps to outline that.