Calibrating your measurement instruments enables connecting them to the international system of units, while ensuring the traceability of your measurement output. This approach serves to satisfy the requirements of your quality assurance protocol. The scope of our COFRAC accreditation equips us to determine the length of your standard reference blocks as well as other standards.
Measurements of length at the center and length variation.
Optimal measurement uncertainties:
(0.02 µm + 0.15.10-6.L) to (0.07 µm + 0.7.10-6.L) depending on the method used (k=2)
0.05 µm for the length variation (k=2).
Length measurement at the center.
Optimal measurement uncertainty: (0.04 µm + 0.3.10-6.L) to (0.5 µm + 2.5.10-6.L) depending on the method used (k=2).
Determination of length at the internal center.
Optimal measurement uncertainty: 0.04 µm (k=2).
Measurements of length at the center, flatness of the surface and both transverse and longitudinal parallelism relative to the adhesion plane, measurement of length variation.
Length measurement by means of interferometric or mechanical comparison.
Measurement range: 10 to 4,000 mm.
Optimal measurement uncertainty: (0.4 µm + 0.6.10-6.L) to (1 µm + 2.5.10-6.L), depending on the method used (k=2).
Measurement range: L ≤ 800 mm
The gauge is calibrated in the horizontal position. Distances are recorded at the center of the surfaces using an oscillating spherical contact feeler referenced to a fringe-counting laser interferometer.
Optimal measurement uncertainty: 0.5 µm + 1.5 .10-6.L (k=2).
List of sites and scopes available on www.cofrac.fr
Depending on the instrument, possibility of establishing a verification certificate based on the relevant standard or client specifications.