January/February 2010

Documenting skills is value-add

ISA certification provides an objective, third-party assessment, and confirmation of a person's skills. It gives manufacturing and factory staff the opportunity to differentiate themselves from their peers and gain recognition. InTech covers two certification areas in this monthly Certification department.

ISA Certified Control Systems Technician (CCST) program

Certified Control System Technicians (CCSTs) calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables.

CCST question

Which of the following is the standard wiring color for a Type K thermocouple in the U.S. and Canada?


CCST answer

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

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.

References: Bryon Lewis, CSE, P.E.; Control Systems Engineering Exam Reference Manual: A Practical Study Guide, ISA Press, 2007. Thomas A. Hughes; Measurement and Control Basics, 4th Edition, ISA Press, 2007.