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Thermometer calibration: single or three points?

thermometer oven calibration single point three sqf cfia audit inspection

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#1 NicoD

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Posted 10 June 2016 - 01:57 PM

So I would really appreciate to hear your opinions about this doubt:

 

We need to monitor our ovens. We are going to have a CFIA inspection (aimed to intercontinental export), and they said they care a lot about the efficiency of the ovens monitoring system.

 

We need to calibrate the sensors that measure the temperature of the ovens.

 

There are 2 options:

 

• Single point calibration: 99 USD

• Three points calibration: 156 USD

 

Do you think CFIA is going to accept a 1 point calibration certificate?

 

Furthermore, we are SQF level 2.

Do you think in the next audit the auditor will accept a 1 point calibration?

 

What if we calibrate the sensor only at 1 point, and we establish the point of our interest, the minimum temperature we want to achieve, which is 165 °F. We don't care about other temperatures, as long as we can be sure that the oven hit that temperature. Would this be acceptable?

 

Thank you very much everyone, craving your opionions!   :spoton:


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#2 BrummyJim

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Posted 10 June 2016 - 03:26 PM

As long as you document the reasons for the choice (and include your risk assessment), I see no problems. If you only care about reaching one specific temperature, you only need to have your sensor to be accurate at that temperature.

 

However, I expect that the auditor would want a 3 point calibration.


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#3 NicoD

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Posted 10 June 2016 - 03:29 PM

Thank you Jim!!


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#4 Charles.C

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Posted 10 June 2016 - 05:25 PM

They certainly won't like it if the 1-point is at ice temperature.

 

Calibration at working temperature is ideal IMO,  = no risk

 

But it rather limits yr use of the oven, eg if it runs at 160degF


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Kind Regards,

 

Charles.C


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#5 redfox

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Posted 11 June 2016 - 01:55 AM

Hello Nico,

 

We are using BRC standard and govt agency (BFAR) for HACCP audit. If you have critical limit on your temp monitoring, they will require you a 3-point calibration. Cost is not acceptable for an excuse for auditors when complying a food safety issue.

 

regards,

redfox


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#6 NicoD

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Posted 15 June 2016 - 07:48 PM

Thank you very much Redfox and Charles!!!! :) 


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Also tagged with one or more of these keywords: thermometer, oven, calibration, single, point, three, sqf, cfia, audit, inspection

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