Joe, I agree with your analysis of 'calibration' and 'adjustment'. However, if a piece of equipment was able to meet a higher specification, I would suspect the manufacturer would have claimed that.
The benefit of the 'as found' and 'as left' measurements is that it tells you not only whether the unit is 'in spec' but also where it is in the range. Might be useful. All of this, of course, is dependent of the 'quality' of the 'standard' that is used to compare with. That is probably where the price goes up and the 'metrolophilosophy' comes in. In other words, do you trust your 'cal lab'? Good luck. Joe -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Joseph Gray Sent: Sunday, July 28, 2013 5:16 PM To: [email protected] Subject: [volt-nuts] What really gets calibrated? I recently had it explained to me that "calibration" is really just checking a piece of gear against a known standard, to see if it meets the manufacturers specification. If it is outside specified values, then it gets "adjusted", not "calibrated". I can see that on the part of the calibration lab, it is easier and faster to simply check that a device meets spec and not have to spend time adjusting anything. It should also be less expensive for the customer. My question is, is just meeting spec good enough? If an instrument is capable of exceeding spec, shouldn't it be adjusted to the best standard available? In other words, if spec says 2 ppm, but it can be adjusted to 1 ppm, wouldn't you want to do that? Joe Gray W5JG _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
