Verification Standard
Precision measurement platforms used to establish the baseline accuracy of instruments against traceable references provide the primary point of quality control during manufacture. A factory calibration bench integrates stable sources, high resolution meters and automated software to compare the device under test against a known physical quantity. These systems are typically housed in climate controlled environments to eliminate temperature and humidity as variables.
The resulting data set forms the basis for the certificate of calibration provided with each unit.
Reference Chain
Traceability to national or international standards is maintained through a hierarchy of increasingly precise instruments. Every component on the factory calibration bench undergoes periodic certification by a laboratory that holds a lower uncertainty level. This chain ensures that the measurements taken on the production floor are defensible and reproducible across different locations.
Accuracy levels for the bench itself must be at least four times higher than the specification of the device being tested.
Automation Interface
Software routines manage the sequence of tests to ensure consistency and eliminate human error. Results are logged into a central database for long term drift analysis.
Environmental Limit
Stability of the test environment determines the ultimate resolution of the calibration process. Air currents, vibration and electromagnetic interference can all introduce noise that exceeds the tolerance of the instrument. Isolated mounting pads and shielded enclosures protect the factory calibration bench from these external disturbances.
If the ambient temperature deviates from the reference condition, the system applies correction factors to account for the thermal expansion of the mechanical components.
