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Thermocouple Application Note 4
Why can’t chemical analysis alone always solve failure problems? Chemical analysis of a failed thermocouple is often an important step in determining the cause of failure. Analysis of the wire, insulators and sheath
Thermocouple Application Note 3
What is the significance of a temperature gradient when there are “intermediate materials” in the thermocouple circuit? For the purpose of this blog, “intermediate materials” is defined as a portion of a thermocouple circuit that
Thermocouple Application Note 2
What does the “Certificate of Thermoelectric Calibration” represent? A “Certificate of Thermoelectric Calibration” is provided by Concept Alloys for all pairs of matched thermocouple materials that are intended to meet an accepted nominal
Thermocouple Application Note 1
What does the "initial calibration tolerance" mean? Materials for “letter designated thermocouples” (as designated by ASTM) and certain other common thermocouple types are produced to meet nominal emf vs. temperature curves that are
Type C Thermocouple Failure Analysis
The Customer's Problem The customer experienced wire breakage problems with tungsten-rhenium thermocouples and submitted a sample for failure analysis. The Findings / Analysis The thermocouple was deconstructed and the failed section was prepared
Failed Type J Thermocouple Analysis
Failed Type J Thermocouple Analysis The Customer's Problem The customer submitted a failed Type J Thermocouple reported to have developed an open circuit after extended time at temperature. Initial evaluation confirmed the open circuit.