Articles Published in Cal Lab Magazine
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, […]
Last week, I had the privilege of presenting at NCSLI’s first annual “Metrology Digitalization Workshop,” a significant milestone in our field. I couldn’t help but reflect on the journey we’ve taken since 2002, when my […]
by Henry Zumbrun, Morehouse Instrument Company Load cells are subject to numerous factors that can affect their performance. Some factors include the design of the load cell, the readout used with the load cell, environmental […]
by Lichun Wang & Yifan Zhang, Keysight Technologies In time response tests involving “non-ideal” pulse-modulated signals for wideband power sensor characterization, result correction becomes essential. Traditionally, the Root Sum Square (RSS) calculation is employed for […]
Now that more jobs have a “work from home” aspect, I thought I would focus this Automation Corner on how debugging has changed over the years. Back in the late 1990s, I first started working […]
by David F. Martson The development and use of intrinsic standards, e.g., Josephson Voltage Standard or JVS, has brought the primary level of uncertainty achievable for DC voltage down to a few nV/V (ppb), while […]
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