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Calibrating your measurement systems enables connecting them to the international system of units, while ensuring the traceability of your measurement results. This approach serves to satisfy the requirements of your quality assurance protocol. The LNE Laboratory proposes an on-site visit to your premises in order to calibrate stationary measurement systems incapable of being moved.
Proposed calibration services
- Calibration of 1 to 3-axis measurement benches:
Determination of the accuracy error by means of comparison with a laser interferometer.
Execution of a repeatability test, along with a measurement uncertainty test using standard products (excluded from COFRAC accreditation).
Determination of pitch and yaw errors (excluded from COFRAC accreditation).
Optimal measurement uncertainties: 0.1 µm + 1.5.10-6.L (k=2) on the accuracy up to 1,000 mm, and 1" (k=2) on the pitch / yaw.
- Calibration of three-dimensional measurement machines (MMT):
(excluded from COFRAC accreditation)
On-site verification using a 600-mm stepped block, which will be measured at several positions within the machine volume. This service has been inspired by Standard ISO 10 360.
A standard ring and a standard sphere will also be measured within the regular working volume, along with an optimal feeler apparatus capable of highlighting the shape measurement quality (circularity).
- Calibration of measurement columns:
Determination of the accuracy error along the vertical axis by means of comparison with a laser interferometer.
Determination of the perpendicularity offset.
Optimal measurement uncertainty: 0.2 µm + 1.5.10-6.L (k=2).
- Calibration of angular plates:
Determination of the plate indication error by means of comparison with a rotary indexer.
Optimal measurement uncertainty: 2.5 to 6" (k=2).
- Calibration of profile projectors (excluded from COFRAC accreditation):
Determination of the enlargement accuracy and the accuracy of X and Y axes on the table.
Determination of the perpendicularity offset.
Measurement uncertainty as a function of projector characteristics as well as measurement conditions.
- Calibration of marble specimens:
Determination of the flatness value at each measurement point of the mesh created and the maximum imperfection. Carried out in accordance with Standard NF E 10-0102 (02/1988) by application of the grid method.
Optimal uncertainty: 2.5 µm + 1.10-6.L (k=2).
Accreditation details
List of sites and scopes available on www.cofrac.fr
Additional services
Possibility to calibrate certain transportable test benches or measurement columns on LNE's premises.
Possibility to draw up a verification certificate in accordance with the associated Standard or client specifications.
