Which type of calibration do I need for my measuring instruments? Is a factory calibration sufficient or do I need a traceable calibration to ISO 17025? In this video, we clarify for you the differences between the two calibration certificates and what must be considered.
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▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬▬▬
0:00 Intro
0:07 What is calibration? Types of calibration: Factory vs. ISO 17025
0:22 ISO 17025 calibration: traceability and guarantees
1:12 ISO 17025 certificate
You can get your measuring instruments checked in the WIKA calibration laboratories. This check can be carried out in the form of a factory calibration or a traceable calibration to ISO 17025. In both cases, the results of the calibration are documented in a calibration certificate and your measuring instrument, the calibration item, receives a calibration mark.
The difference: only a calibration to ISO 17025 guarantees traceability to the national standard. In accordance with the ranking order of the standards – from the working standard or factory standard through the reference standard to the national standard – there is a calibration hierarchy. Sources of error such as hysteresis and repeatability are also measured, documented together with the measuring deviation and the uncertainty of the reference, and summarised in the expanded measurement uncertainty. In comparison with the factory calibration, the calibration to ISO 17025 is thus more accurate, more extensive and also internationally recognised.
A factory calibration only considers the hysteresis and determines the deviation. The factory calibration is documented in an inspection certificate in accordance with DIN EN 10204.
📖 You can read more about the topic of “traceability” in the WIKA blog: [ Ссылка ]
✅ The WIKA calibration laboratories are accredited to ISO 17025 for the measurement parameters of pressure, temperature, current, voltage and resistance. Further information on our calibration laboratories or an on-site calibration with the WIKA calibration van can be found on the WIKA website. [ Ссылка ]
▶ An interesting video on the calibration of measuring instruments and the difference between calibration, verification and adjustment can be found here: [ Ссылка ]
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