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24hr Data Loggers - Do I need to calibrate my equipment through third-party??

Discussion in 'ISO 17025 - Calibration and Test Laboratories' started by Killian O'Leary, Jan 28, 2021.

  1. Killian O'Leary

    Killian O'Leary Member

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    Hi Everyone,

    We have a new 24hr cloud based environmental monitoring system (%RH and Temp) hooked up to all our fridges/freezers and stability chambers, the probes of which are calibrated annually by a ISO/IEC 17025 certified lab and the certificate contains the below statement. My question is do i need to get a different third-party calibration provider to do the 12 month annual calibration/verification as was done before we had the monitoring system if we now have the monitoring system. We are a recently accredited 17025 lab.

    "________laboratory is an ISO/IEC 17025:2017 Calibration Laboratory Certified by American Global Standards (AGS) and accredited by The American Association for Laboratory Accreditation (A2LA). This accreditation demonstrates technical competence for a defined scope and the operation of laboratory quality management systems. The standards that have been utilized in this calibration are certified by, or are traceable to, the National Institute of Standards and Technology (NIST), and meet or exceed manufacturers’ requirements for the above mentioned item. This calibration does not take into consideration measurement uncertainty (Simple Decision Rule). The Expanded Measurement Uncertainty listed is the combined standard uncertainty multiplied by a coverage factor of 2 (k=2) which defines the interval having a confidence level of approximately 95%. Although the item(s) calibrated meet the specification and performance at the time of calibration, due to any number of factors like aging, temperature, shock and contamination, the listed due date of the item calibrated does not imply continuing conformance to specification during the interval listed. Should any earlier or additional recalibration be required, please contact __________ for factory calibration and re-certification traceable to NIST."

    Thanks in advance,
     
  2. John C. Abnet

    John C. Abnet Well-Known Member

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    Good day @Killian O'Leary, and welcome to the site.
    Congratulations on the ISO 17025 accreditation. No easy task.

    Let me see if I understand your question correctly...
    1- Your organization has been having %RH and Temperature probes calibrated annually by an ISO 17025 accredited lab.
    2- Your organization has recently added a cloud based interface, which monitors the %RH and temperature (and, presumably sets off an alarm or sends a
    notification if any conditions migrate outside those established?)
    3- Since the addition of the cloud based monitoring, you are asking if you need to change to a different certification lab, now that the cloud based monitoring is in place.

    If my understanding is correct, then the answer is "no". There should be no reason why the monitoring system would cause the current ISO 17025 certification lab be invalid.

    Is my understanding of your question correct or are you asking specifically about the verbiage within the certification that implies a more frequent calibration is needed?

    Please advise.

    Thank you.
     
  3. Killian O'Leary

    Killian O'Leary Member

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    Thank you for your swift reply. See responses above.
     
  4. John C. Abnet

    John C. Abnet Well-Known Member

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    [QUOTE="Killian O'Leary I'm basically asking can I eliminate having the annual calibration of these units done by the third party calibration lab if we are now using this 24hr monitoring system that is NIST traceable and deemed accurate? Assuming the calibrated probes are switched out before their calibration due date. [/QUOTE]

    Thanks for clarifying @Killian O'Leary ;
    If I understand correctly then no, you would not be able to eliminate the probe calibration.

    I'm not concerned about the monitoring of what the probes are reading, but instead, about the probes themselves. I do not see how the cloud based monitoring system can verify and calibrate the actual probes. Unless there is a capability I am not aware of, the individual probes would still need calibrated.

    Hope this helps.
    Be well.
     
  5. Killian O'Leary

    Killian O'Leary Member

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    Hi John,

    Thank you for explaining, that was my thought originally and thank you for clarifying. You input is greatly appreciated.

    Kindest regards,

    Killian
     
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