Certificate of calibration from Manufacturer allowed?

A

A6Intruder

#11
I always used the manufacturer's cert; I paid for calibration to NIST, and never had an issue with any auditor. One side note: I also found it cheaper to buy a new caliper, scale, dial indicator than to have the old ones cal'ed each year. so each year there were old tools sent home; employees were ok with that for garage work, so I boosted morale, had cal'ed tools in the shop and saved money.
 
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SpinDr99

Involved In Discussions
#12
I agree with Hershal. I've NEVER used the generic "certificate" from a manufacturer. They usually don't say more than they comply with their requirements. I can't ever see how a third party auditor would accept that. I've always had a gage block set and would either pay to have them calibrated when purchased, or calibrated the instrument (whenever possible) myself. Even when the boss would complain about cost, I found the lowest cost calibration service that could provide traceability, and justified it by explaining it's cheaper than having a number of instruments with the manufacturer's "cert" and having the opportunity for a major finding during an audit.
 

howste

Thaumaturge
Super Moderator
#13
I always used the manufacturer's cert; I paid for calibration to NIST, and never had an issue with any auditor. One side note: I also found it cheaper to buy a new caliper, scale, dial indicator than to have the old ones cal'ed each year. so each year there were old tools sent home; employees were ok with that for garage work, so I boosted morale, had cal'ed tools in the shop and saved money.
The problem with this scenario is that you'll never know if a tool goes out of tolerance some time before you dispose of it. If you calibrate/verify the tool periodically it shows evidence that the tool was suitable for use during the previous period. If you replace the tool without checking it then it could have gone out at any time during the year and you'd never know.
 

qualprod

Trusted Information Resource
#14
If you are 9001, it is supposed instruments have to be calibrated by a reliable supplier, it is expected having 17025, when you say "little " what do you refer to?
 

dwperron

Trusted Information Resource
#15
All of these calibration "requirements" depend on what standards you are being held to.

The ISO 9000 series, including AS9100 and such, has the simple requirement:

"Where necessary to ensure valid results, measuring equipment shall be calibrated or verified, or both, at specified intervals, or prior to use, against measurement standards traceable to international or national measurement standards"

Nothing about reliable, nothing about 17025. Just a traceable calibration. I know that according to the VIM that means an accredited calibration with uncertainties, but the real world just requires that you are able to show traceability.

Thus, those little certificates that come with equipment may be adequate to use. ISO 9001 doesn't require much except the traceability statement.

In the ISO 10012, 17025, 13485, ANSI Z540 , etc. worlds then the calibration requirements get much stronger. Accredited calibrations with uncertainties, reports with required information, stuff like that. But most people do not work in those worlds.

Also, Howste nailed it in stating that replacing your tools with new ones is bad mojo: what if the tool has gone out of tolerance and you just hand it off to someone to take home. You would never know you had an OOT condition. That's the same as never having it calibrated in the first place!!!

It is mandatory to calibrate / verify all calibrated items when they are put into service and when they are taken out of service.
 
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