Articles – Page 30 – Cal Lab Magazine

Faster, Better, Cheaper: New Automated Vacuum Calibration Service at NIST

November 9, 2012 Office

by Jacob E. Ricker, Jay H. Hendricks, Douglas Olson, and Greg Strouse In today’s fast-paced world and ever-expanding quality assurance requirements, the National Institute of Standards and Technology (NIST) has developed a system to fill […]

Calibrating DC Shunts: Techniques and Uncertainties

July 25, 2012 Office

By Jay Klevens Accurate electrical current measurement is critical to the power and electrical test industries. DC and low frequency ac current is usually measured using a current shunt. Shunt calibration has unique error sources […]

Quality of Air Speed Calibrations

July 25, 2012 Office

By Rachael V. Coquilla Wind measuring instruments, such as cup anemometers, propeller anemometers, ultrasonic anemometers, velocity meters, airflow meters, and many other types, are commonly used in various industries as monitoring devices or for evaluation […]

Learning to Apply Metrology Principles to the Measurement of X-ray Intensities in the 500 eV to 110 keV Energy Range

July 25, 2012 Office

By Michael J. Haugh, Travis Pond, Christopher Silbernagel, Peter Torres, Kent Marlett, Fletcher Goldin, Susan Cyr National Security Technologies, LLC (NSTec), Livermore Operations, has two optical radiation calibration laboratories accredited by the National Institute of […]

Watch Out for Those Thermoelectric Voltages!

May 22, 2012 Office

By Martin L. Kidd This Metrology 101 article addresses the impact of thermoelectric voltage (EMF) on low-voltage measurements. Using a high precision digital multimeter, the author demonstrates how you can inadvertently introduce thermal EMF errors. […]

Identifying and Avoiding Common Errors in RF Calibration

May 22, 2012 Office

By Paul Roberts There are many potential sources of human and measurement errors in RF calibration. This paper examines five common error sources associated with connectors, cables, and accessories such as adapters, splitters and couplers: […]

A Comparison of 12 US Liquid Hydrocarbon Flow Standards and the Transition to Safer Calibration Liquids

May 22, 2012 Office

By John Wright, Aaron Johnson, Gina Kline, Chris Crowley, Jodie Pope, Vern Bean, Kevin John, Jeremy Latsko, David Pfeffer, James Winchester, Michael Case, Gary Mahoney, Gary Quigley, Jason Bellavance, Jon Fitzgerald, Bradley Ramsey, Wes England, […]

Rethinking the Flexible Standards Paradigm

May 22, 2012 Office

By Michael Schwartz In many of today’s software projects, developers are challenged with the task of designing interchangeable standards architecture into their metrology based applications. Currently, many developers see an oscilloscope as an oscilloscope and […]