Shop

Artificial Intelligence Notice: ISA prohibits the entry of any ISA intellectual property (“ISA IP”), including standards, publications, training or other materials into any form of Artificial Intelligence (AI) tools, such as ChatGPT. Additionally, creating derivatives of ISA IP using AI is also prohibited without express written permission from ISA’s CEO. In the case of such use, ISA will suspend a licensee’s access to ISA IP, and further legal action will be considered. Please review ISA's policies for Use of AI Tools, Intellectual Property and Terms and Conditions for further information.

Cybersecurity Awareness Month Sale: This October, use code CYBER25 to save 300 USD on select ISA cyber training and 10% on select cyber standards. View the deals.

Cancel
SM

ISA Certified Control Systems Technician (CCST) program

  • CCST

Summary

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

In order to provide a sample to a gas chromatograph or other extractive field analytical instrument at the proper temperature, pressure, flow, or concentration to make it most compatible with the analyzer, the sample should pass through a ____________ prior to entering the analyzer chamber.

A. glass capillary tube
B. sample probe calibration system
C. sample conditioning system
D. smooth-walled pipe

CCST Answer
The correct answer is C, "sample conditioning system."- Answers A and C are items not generally associated with extractive field analyzers. Capillary tubes are used for collecting small samples (water, for instance) from a larger container. There are special capillary tubes that can be used in the analyzer chamber of a gas chromatograph, but they are not constructed from glass. Smooth-walled pipe is important for reducing friction losses in piping systems.
A sample probe calibration system is important to the overall function and maintenance of an extractive field analyzer. However, these systems are not used to prepare the sample for analysis, but rather to provide a mechanism to verify and maintain analyzer performance.
A sample conditioning system can contain devices, such as filters, demisters, flow regulators, and heaters. Sample conditioning systems are used to bring the sample to the ideal process conditions for accurate measurement in the analyzer itself. The sample conditioning system can be a key maintenance item in an analyzer system, since each device needs to be calibrated, cleaned, etc.

 

Reference: Goettsche, L.D. (Editor), Maintenance of Instruments and Systems, Second Edition, ISA, 2005.

Reader Feedback

We want to hear from you! Please send us your comments and questions about this topic to InTechmagazine@isa.org.



Like This Article?

Subscribe Now!

About The Author