T01: “The Book” on Resistance, from 0.1 micro Ohm through 100 TeraOhm Measurements – Full Day

Abstract

8 Hour hands-on course covering resistance measurements from 1 µΩ to 100 TΩ. Session A focuses on low to mid-range values based on current and high range values based on voltage, while session B will cover very low resistance and high currents. Session A will provide deep analysis into the characteristics and variables that affect test setups, measurement results and uncertainties. Special attention is covered for variables including resistance design, impact of
wiring, proper guarding and grounding as well as well material contributions to uncertainty such as environmental, power and temperature coefficients, voltage coefficients, and individual drift of standards (with linear regression). Addressing these contributions in an uncertainty
analysis will be provided.

Session B (4 hours) overviews Precision DC high current measurements and high current sourcing using a 300A current source, several different types of current shunts and associated types of high current cabling. Participants will be able to use different setups and have hands-on practice and to see how different setups affect measurements. Involvement in this workshop will provide the participants with tangible demonstration of the considerations to making best and consistent measurements with high current. The participant will receive not only the best practices for these measurements, but the understanding why the techniques demonstrated are the best practices. Design considerations of high current standards will also be discussed. The measurements with high current will be explored from the perspective of measurement uncertainty such that the effect of the consideration outlined can be quantified in a real-world, practical uncertainty budget. Measurement parasites that affect high current measurements will also be covered as well as Safety considerations in high current measurements.