Back

Calibration of standards for a three-dimensional MMT measurement machine and a machine tool

Calibrating your standards enables connecting them to the international system of units, while ensuring the traceability of your measurements. This approach serves to satisfy the requirements of your quality assurance protocol.

Proposed calibration services

CHECK MASTER or KOBA-step type stepped clamping block

Measurement range: from 5 mm to 820 mm

The stepped clamping block is calibrated in the horizontal position.
The distances are recorded at the center of the individual faces using an oscillating, spherical touch feeler with reference to a fringe-counting laser interferometer
Optimal measurement uncertainty: U = (0.3 µm + 1.5 .10^-6.L) (k=2)

Length of up to 1,020 mm, offset as of 820 mm (this offset does not qualify for COFRAC accreditation)

Optimal measurement uncertainty: U = (0.5 µm + 2.5 .10^-6.L) (k=2)

Renishaw BALLBAR system

BALLBAR QC10 or QC20-W

Determination of the accuracy error of the sensor by means of interferometric comparison

Optimal measurement uncertainty: U = 0.30 µm (k=2)

ZERODUR calibrator

Determination of three distances of 100, 150 and 300 mm by means of interferometric comparison or mechanical comparison (also possible for the 25-mm caliber)

Optimal measurement uncertainty: from (0.25 µm + 0.30.10^-6.L) to 0.60 µm (k=2).

Accreditation details

COFRAC Accreditation No. 2-35 (Paris site)

List of sites and scopes available on www.cofrac.fr