Calibrating your measurement instruments 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.
- Wavelength determination in comparison with a stabilized laser source on a saturated iodine absorption ray / Optimal measurement uncertainty: U = 3.10-9 µm (3 fm) (k=2)
- Estimation of measurement uncertainty over 3 m with a 500-mm interval / Optimal measurement uncertainty: U = (0.15 µm + 0.1. 10-6.L) (k=2)
- Calibration of weather sensors
7-point pressure probe between 880 and 1,030 hPa / Optimal measurement uncertainty: U = 0.3 hPa (k=2)
3-point temperature probes: 15°, 20°, 30 °C with readjustment* of material probes should the accuracy error exceed 0.03 °C / Optimal measurement uncertainty: U = 0.15°C (k=2)
* only if technically possible and if documentation has been furnished.
Determination of the accuracy error by means of interferometric comparison
Measurement range: 0-25 m
Standard uncertainty: (1.2 mm +2.10-6.L) for a resolution of 1 mm (k=2)
Determination of the indication error by means of interferometric comparison
In accordance with Standard NF E 11-068 (12/1992)
Standard uncertainty: 0.2 to 0.9 µm depending on the resolution and stroke (k=2)
Determination of the accuracy error by means of interferometric comparison
Standard uncertainty: depending on the instrument
Determination of the accuracy error on the vertical axis by comparison with a laser interferometer
Determination of the perpendicularity offset
Optimal uncertainty: 0.2 µm + 2.5.10-6.L (k=2)
List of sites and scopes available on www.cofrac.fr
For a laser interferometer:
Cette collaboration a permis d’élargir notre gamme de prestations et d’accroître le nombre de nos clients satisfaits. D’une manière générale, les prestations du LNE nous ont permis non seulement de conserver des clients mais aussi d’en gagner de nouveaux.
