Date: Tue, 06 Apr 1999 12:36:52 +0700
Subject: Calibration by correlated parameter - Equipment to measure resistance
I am Iim Ibrohim from Indonesia. I know your name from Marc at the Cove. He told me that you can help my problem.
We have a measurement equipment to measure resistancy of potentio meter (in ohm). Actually it is like an attribute measurement aquipment. We set the limit, and it become a go no go gage. The question is, if we do calibration by feeding certain value of Ampere, will it be a problem (in the relationship with ISO guide 25 or QS-9000) ?
If we can do it, is there any procedure or guidance you can send to me ?
Thank's in advance.
Subject: calibration (fwd)
Date: Wed, 7 Apr 1999 14:05:02 -0400 (EDT)
From: Greg Gogates
It sounds like you are using a pot (or linear pot) to measure a distance
or rotation. Using the measured ohms you are converting it to a go-nogo
Neither ISO25 or ISO900x will argue with you as long as;
- The equipment is calibrated and traceable.
- Your method is preferrably published or custom.
- This method will have to be agreeable with the client
- Most importantly you have evidence that your device produces values
within the tolerance and uncertainties required by the go-nogo criteria.