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  Measurement, Test and Calibration
  Reliability Targets , End-of-Period In-tolerance

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Author Topic:   Reliability Targets , End-of-Period In-tolerance
Mike Czech
Lurker (<10 Posts)

Posts: 2
From:St. Paul, MN, USA
Registered: Dec 1999

posted 16 December 1999 09:27 AM     Click Here to See the Profile for Mike Czech   Click Here to Email Mike Czech     Edit/Delete Message   Reply w/Quote
What are your minimum requirements for percent in-tolerance at the end of the calibration period for multi-paratmeter equipment, ie equipment that has more than one parameter or distinct set point, such as a digital multimeter, gage block set or decade resistor?

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Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
Registered:

posted 18 December 1999 06:50 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
I can't personally help you with this. Unfortunately there aren't too many calibration experts here. I'll see if I can drum up a response.

I don't know if you know (heck, you may already be a list member) but there is a Calibration and Test Lab list serve. Contact 'Greg Gogates' iso25@fasor.com to get on the list.

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Jerry Eldred
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Posts: 136
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Registered: Dec 1999

posted 20 December 1999 11:49 AM     Click Here to See the Profile for Jerry Eldred   Click Here to Email Jerry Eldred     Edit/Delete Message   Reply w/Quote
I think most of my view on this was expressed in the other post. But just as a response to this, I have seen a common figure of 95%, and with a significant sample size (25 minimum). But in combination with the minimum 4:1 T.A.R., and with my thoughts in the other response, minimum % In-tolerance must be based on acceptable risk.

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