Charles Wathen
Involved - Posts
Hi everyone,
I have a question regarding a practice that our Ireland facility has been doing with measurement uncertainty.
For example, they send out an instrument for calibration. It comes back stating that the tolerance was within, but it was right at the edge. The vendor also quotes a measurement uncertainty associated with the measurement. Our Ireland facility is taking the measurement uncertainty and adding that to the tolerance and then saying its out of tolerance.
I told them that the purpose of the measurement uncertainty is just that - you are not sure of the exact true value. You would need to perform some type of risk associated with the measurement to detemine if it would impact the process.
Thoughts?
I have a question regarding a practice that our Ireland facility has been doing with measurement uncertainty.
For example, they send out an instrument for calibration. It comes back stating that the tolerance was within, but it was right at the edge. The vendor also quotes a measurement uncertainty associated with the measurement. Our Ireland facility is taking the measurement uncertainty and adding that to the tolerance and then saying its out of tolerance.
I told them that the purpose of the measurement uncertainty is just that - you are not sure of the exact true value. You would need to perform some type of risk associated with the measurement to detemine if it would impact the process.
Thoughts?