NCSL International issues a call to action by the Metrology Community Boulder CO, USA -- According to NCSL International's Press release dated May 28th: The US Dept. of Labor rejects petition to recognize Metrology job descriptions in its proposed 2010 Standard Occupational Classification (SOC) System" We know that Metrology is the bedrock upon which all U.S. commerce and manufacturing is … [Read more...]
Dynamic MSA
February 6, 2008 By
Measurement System Analysis (MSA) as a dynamic, rather than static, beastie is discussed in a new online article entitled:Dynamic Analysis Offers a Better MSA Management Alternative on Semiconductor International, A Reed publication, by author Phillip H. Williams from Freescale Semiconductor. Among its answers to the question: "How often must we repeat our measurement system analysis?", is … [Read more...]
One Day NYC Symposium on Deming’s Analytic Papers
September 19, 2007 By
Although many people know Dr. W. Edwards Deming mainly for his work in management, he is better known in the statistical and legal communities for his analytic work, especially sampling theory and practice. The Deming Institute is co-sponsoring a one-day symposium that will focus only on his statistical work. Papers for the September 24, 2007 Symposium on Deming's Analytic Papers … [Read more...]
Basic Errors in Measurement
September 16, 2007 By
Back in the good old days (before PCs and hand-held calculators, that is) we used to do calculations the hard way; by hand! It seemed to give a little more significance to the actual results of a measurement or a series of them. At least I remember those early ones a heckofa lot better than some that were just series of numbers tossed into a spreadsheet and summed, averaged and … [Read more...]
An Online Measurement Uncertainty Guide
September 7, 2007 By
In the previous post, I talked about measurement uncertainty and gave a few weblinks to, what I think are informative sites. In case you didn't have time to look at the EuroChem one on Measurement Uncertainty, here's both a link and a quick listing of the various sections of their online Guide to the subject. It is very detailed and, I think, informative. If nothing else, just the list of … [Read more...]
Uncertainty Breeds Inaccuracy..or what?
September 6, 2007 By
In The August 24th Industrial Automation Newsletter at SensorMag.com I wrote a brief article about Uncertainty and how it is properly used in understanding and reporting measurements. After all, the process of making a measurement is always fraught with errors. The key to understanding them is statistics; make more than one measurement under prevailing conditions and learn what the dispersion … [Read more...]
Gage R&R For IR Thermometers?
June 22, 2007 By
Gage R&R is well-defined for..well..gages. What do you do when faced with a device that's not a typical dimension gage? Say, what about the case of Infrared or IR Radiation Thermometers; can you do a Gage R&R evaluation with them? Been there. Done that. But it wasn't simply aiming an instrument into a blackbody furnace N times, or setting one up, aligned to a furnace and turning it on … [Read more...]
Measurement Results & Actions
June 12, 2007 By
Part 3 of the saga of verifying the measurement of steel strip width on a continuous pickle line. (See the preceding two posts) Once the first Gage R&R study results were in, we reported to our management. Not wanting to leave any stone unturned, they suggested that we repeat the Gage R&R study using only one tape measure. The idea was to separate out the individual measuring devices … [Read more...]
