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  Measurement, Test and Calibration
  Comparator Calibration Requirements

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Author Topic:   Comparator Calibration Requirements
Lurker (<10 Posts)

Posts: 1
Registered: Feb 2001

posted 06 February 2001 10:55 AM     Click Here to See the Profile for JV     Edit/Delete Message   Reply w/Quote
I have been investigating comparator calibration, only to find out that there is no industry standard which outlines acceptance criteria. I have asked comparator calibration companies, and they comment that nothing exists, and its up to you to determine acceptance. I understand that an R&R study can be performed to verify if it is an acceptable instrument for use in inspection, but what about gage tolerance? Does anyone know what is accepted as a tolerance for comparators? If know one knows, how can it be called calibration?

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Ryan Wilde
Forum Contributor

Posts: 20
From:Mineola, NY, USA
Registered: Feb 2001

posted 06 February 2001 10:18 PM     Click Here to See the Profile for Ryan Wilde   Click Here to Email Ryan Wilde     Edit/Delete Message   Reply w/Quote
You will have to give a bit more detail than "comparator". I can think of a few dozen different types of comparators off the top of my head.

Calibration is the comparison of an unknown to a known traceable standard. There is no tolerance. Tolerance does not come into play until you are performing verification. If you measured it, you calibrated it.

Ryan Wilde, Technical Manager
Quality Control Sales & Services

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