Charles Wathen
Involved - Posts
Hi guys,
I have a question on a uncertainty calculation that I'm trying to determine.
I want to determine the uncertainty of a measurement using my Zygo Gold laser micrometer when we calibrate Deltronic Pin Gages. Here is the info:
Zygo laser micrometer resolution: .000001"
Zygo laser micrometer accuracy: .00002"
Zygo laser micrometer repeatability: .000005"
Pin Gage Standard XXX (used to cal laser mic): .00001"
By calculating the above, I get an expanded uncertainty of .000026".
My question is: should I be including the accuracy of the Deltronic Pin Gage I'm calibrating? It has a standard accuracy of +.00004 -0".
If I do, then my expanded uncertainty is .000053" which seems higher than I expected. If I do use this, should I subtract this value from the .00004" tolerance of the Deltronic Pin Gage to come up with an uncertainty of .000013"?
Please help a confused soul.
I have a question on a uncertainty calculation that I'm trying to determine.
I want to determine the uncertainty of a measurement using my Zygo Gold laser micrometer when we calibrate Deltronic Pin Gages. Here is the info:
Zygo laser micrometer resolution: .000001"
Zygo laser micrometer accuracy: .00002"
Zygo laser micrometer repeatability: .000005"
Pin Gage Standard XXX (used to cal laser mic): .00001"
By calculating the above, I get an expanded uncertainty of .000026".
My question is: should I be including the accuracy of the Deltronic Pin Gage I'm calibrating? It has a standard accuracy of +.00004 -0".
If I do, then my expanded uncertainty is .000053" which seems higher than I expected. If I do use this, should I subtract this value from the .00004" tolerance of the Deltronic Pin Gage to come up with an uncertainty of .000013"?
Please help a confused soul.