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Fluke Calibration Blog
Calibration Equipment & Standards and Calibration Software
Nov 28, 2012
I’m a big fan of calibration baths. When I managed our temperature calibration laboratory, I relied on them. With a series of baths and a liquid nitrogen comparator, we were able to perform a large volume of accredited temperature calibrations with lower uncertainties from -197 °C to 500 °C than would have been possible in any other way. Sometimes we would get a probe that was large and bent, or very small, or had a large handle and it would slow us down, but it would not stop us, because the...
Nov 08, 2012
Look up any list of “most common fears” and one of the top items will be “fear of public speaking.” But chances are, at some time in your professional career you will be called upon to give a presentation. Whether you’re speaking to a small group of colleagues at your company or a group of professionals at a conference, here are some tips to help you succeed – and perhaps even enjoy your experience as a public speaker.
Know your audience
Are you speaking to a peer group? Will the...
Oct 08, 2012
Jim is an ambitious new metrologist at ABC Tech. He wants to become more visible in his department and in the metrology community at large, so he decides to submit a paper to a prestigious conference. He schedules some time for himself over the weekend to sit down and think about it.
Sitting in front of a blinking cursor on his computer monitor, Jim freezes. He thought he knew what he wanted to write about, but now he’s drawing a blank.
Writer’s block isn’t limited to metrologists...
Aug 24, 2012
Dave buys a new calibration bath because of a requirement to calibrate to –80°C. His boss notices the temperature range on the bath is from –80 °C to 110 °C. Sensing a new source of revenue, the boss says, “Great, now we can finally calibrate thermometers to 110 °C too.”
“No”, Dave says, “we can’t set the temperature higher than 70°C”
“Why, what’s wrong with the bath?”
“Nothing, it’s working perfectly.”
Confused and agitated, the boss leaves while mumbling something about temperature...
Aug 09, 2012
Mars Science Laboratory - measurement and calibration on Mars
You can bet there is a lot of test and measurement equipment onboard Curiosity. As a test and measurement professional, I’d like to tell you about some of the things I find especially interesting.
Mars Science Laboratory - measurement and calibration on Mars
You can bet there is a lot of test and measurement equipment onboard Curiosity. As a test and measurement professional, I’d like to tell you about some of the...
Jul 20, 2012
It takes basic research and a lot of hard work to make primary standards that meet today’s demanding requirements. But how do scientists research the behavior of a sealed system like a triple point of argon cell? You can’t see what’s going on inside, and you can’t know what you can’t see. Or can you?
Realizing the ITS-90
The triple point of argon (83.8058 K ) is one of the most commonly used fixed points for the calibration of standard platinum resistance thermometers (SPRTs) at...
Jul 10, 2012
There is a silent measurement quality crisis and few people are aware. Infrared thermometers are being used more and more for critical temperature measurements without much assurance that their values are accurate. Infrared thermometers can be calibrated to improve and assure measurement accuracy, but even the flat-plate radiation sources used to assure those measurements at temperatures below 1000 °C often lack the traceability necessary to be a reliable as a calibration standard.
So what’s...
Jun 27, 2012
Imagine for a moment you are Bob. Bob lives in New York and recently purchased a deadweight tester from a gentleman in South Carolina. The deadweight tester came with a certificate of calibration, but the instrument appears to read 0.5 to 0.6 psi off when calibrating his 0.05% 1,000 psi gauges. Bob scratches his head, then double checks the gauges with the older equipment he is replacing. The gauges read well within tolerance on his old equipment. Bob is not happy. Can you blame him?
Bob...