LABORATORY ACCREDITATION
TechnoTeam Bildverarbeitung GmbH now has an ISO/IEC 17025:2017 accredited calibration laboratory for our imaging color and luminance measuring devices (LMK/LMK Color) and our LED-based color and luminance standards (L3 Standard). This accreditation has been granted by the Deutsche Akkreditierungsstelle (DAkkS, German accreditation body).
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Your benefits from having a calibration performed in our calibration laboratory in accordance with ISO 17025:
- Regular verification of the competence of our calibration laboratory by an independent institution (German Accreditation Body - DAkkS).
- Calibration results that are traceable to the International System of Units (SI), trustworthy and comparable worldwide.
- Calibration results verified by regular interlaboratory comparisons.
- Calibration certificates bearing the DAkKS logo that are recognised worldwide.
- Fulfillment of all IATF 16949 requirements for external calibration laboratories.
- In contrast to the test reports issued by a test laboratory, the calibration certificates issued by our calibration laboratory can be used as the starting point of a traceability chain.
What is accreditation?
A calibration laboratory is accredited by an independent third party, which confirms that the calibration laboratory can carry out its calibrations competently and following internationally valid standards within the scope of the accreditation. Within the Federal Republic of Germany, calibration laboratories are accredited by the German Accreditation Body (DAkkS). Accreditation by the DAkkS is carried out per DIN EN ISO/IEC 17025. [1]
What are the advantages of using an accredited calibration laboratory?
Within the calibration hierarchy of a country, accredited calibration laboratories are ranked just below the national metrology institutes. Accredited calibration laboratories play a significant role in the quality infrastructure of a country. The accreditation ensures that the calibration laboratory carries out its calibrations competently and in accordance with internationally valid standards. This guarantees customers that the calibration results are reliable and traceable to the International System of Units (SI) and thus comparable worldwide.
The calibration certificates issued by an accredited calibration laboratory with the DAkkS logo and calibration mark meet all the requirements of ISO9001 and IATF16949 with regard to the use of measuring instruments and measuring devices.
What is the advantage of an accredited calibration laboratory over a testing laboratory?
Testing laboratories do not use measurement uncertainties to carry out conformity assessments. [2] If uncertainties are considered at all, then so-called test value uncertainties are used. [3] In the case of test value uncertainties, these are not measurement uncertainties according to the Guide to the Expression of Uncertainty in Measurement (GUM) [4] [5] [6], since only the influencing variables specified in a test specification or standard are taken into account when determining the test value uncertainty.
Calibration laboratories, on the other hand, always use measurement uncertainties according to the GUM. When calculating the measurement uncertainty of a calibration, all significant influencing variables are considered. Therefore, the calibration results can be traced back to the International System of Units (SI) while maintaining an uninterrupted traceability chain. This means that a measuring instrument or material measure calibrated by a calibration laboratory can pass on the unit of the measured variable, which a measuring instrument tested within a testing laboratory cannot. Only verifying the metrological traceability of a measuring instrument or a material measure provided by a calibration laboratory makes measurement results comparable and consistent worldwide, allowing them to be used for conformity statements.
Scope of accreditation?
Bibliography
[1] | DIN EN ISO/IEC 17025:2018: Allgemeine Anforderungen an die Kompetenz von Prüf- und Kalibrierlaboratorien. |
[2] |
PD IEC GUIDE 115:2023 Application of measurement uncertainty to conformity assessment activities in the electrotechnical sector. |
[3] |
Leitfaden DKD-L 4-1 Prüfwertunsicherheit in der Konformitätsbewertung. |
[4] |
JCGM 100:2008: Evaluation of measurement data - Guide to the expression of uncertainty in measurement. |
[5] |
JCGM 101:2008: Evaluation of measurement data - Supplement 1 to the "Guide to the expression of uncertainty in measurement" - Propagation of distributions using a Monte Carlo method". |
[6] |
JCGM 102:2011: Evaluation of measurement data - Supplement 2 to the "Guide to the expression of uncertainty in measurement" - Extension to any number of output quantities". |