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AutoQuiz: Standard Wiring Color for Type K Thermocouple

The post AutoQuiz: Standard Wiring Color for Type K Thermocouple first appeared on the ISA Interchange blog site.

AutoQuiz is edited by Joel Don, ISA’s community manager. 

 

Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for more information about the CCST program.

In the diagram in the post image, which (A, B, C or D) is the standard wiring color for a Type K thermocouple in the U.S. and Canada?

   

<span class="collapseomatic " id="id3119" tabindex="0" title="Click Here to Reveal the Answer” >Click Here to Reveal the Answer

A illustrates the very common Type J, Iron/Constantan thermocouple.

B illustrates the less common Type E, Chromel/Constantan thermocouple.

D illustrates the less common Type T, Copper/Constantan thermocouple.

The correct answer is C, which illustrates the very common Type K, Chromel/Alumel thermocouple.

References:

Control Systems Engineering Exam Reference Manual: A Practical Study Guide, by Bryon Lewis, ISA Press.

Measurement and Control Basics, 5th Edition, by Thomas A. Hughes, ISA Press.

 

 

 

 

 

 
 

 


Source: ISA News