Problem: How do you determine thermocouple (T/C) system resistance? Solution: Test adapters permit the rapid and error-free measurement of test voltages to calculate this figure.
Problem: How do you determine thermocouple (T/C) system resistance?
Solution: Test adapters permit the rapid and error-free measurement of test voltages to calculate this figure. First, set the voltmeter's function range to measure the T/C system's output millivolts and insert the measuring adapter with the test leads into the input jacks. Disconnect one T/C leadwire at the device terminal block that provides cold junction compensation. Connect one measure adapter test lead to the disconnected T/C leadwire and the other to the remaining leadwire. Record the millivolt reading (Eo).
Insert the shunt adapter into the measure adapter and record the reading (Et). Remove the measure adapter test clips and reconnect the T/C's leadwire to the terminal block. Then calculate the T/C's resistance using the formula: Rx = [Rt(Eo - Et)]/Et. A large change or steady drift indicates an accuracy problem.
Contributor: Alan Sellers, Lancaster, OH; 614-860-6119
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Annual Salary Survey
Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.
There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.
But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.
Read more: 2015 Salary Survey