Articles Published in Cal Lab Magazine
by Dan Wiswell As a collector of antique test equipment, I have visited many antique shops over the years with the hope of stumbling upon something good. A few decades ago, there were plenty of […]
One of the quotes I love is by Henry Ford: “If I asked my customers what they wanted, they would have said faster horses.” Another quote is from Neil deGrasse Tyson: “In the 1900s, horses […]
by Martin de Groot & Peter van de Leemput (Jul-Sep 2009) Abstract: This paper deals with accreditation of calibration laboratories, considering that for many calibration technicians the step to accreditation is a significant border to […]
by Martin de Groot & Erich Tegeler (Jan-Mar 2009) Abstract: This is the first in a series of papers about the basics of measurement. The subject, temperature, is basic by itself, because it is so […]
by Greg Powell, B.S., M.B.A. The calibration laboratory is increasingly viewed as a business operation. In-house labs are called on to justify their expenses relative to the cost of a commercial lab. Commercial laboratories are […]
by Terry Nagy Technicians and engineers often use thermistors to measure temperature in applications which require high accuracy. Thermistors operate by changing resistance as their temperature changes in a very predictable but non-linear way. This […]
by Christopher L. Grachanen A proficiency test (PT) is a blind test to participants that is intended to prove or disprove participant’s measurement or testing competence. Any action that breaks the integrity of that process […]
by Tim Osborne In this article, we aim to identify why and in what ways the IECEE changed its ruling on internal calibrations, share some of the major pros and cons of performing internal calibrations, […]
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