ISA Interchange

Welcome to the official blog of the International Society of Automation (ISA).

All Posts

TUNE YOUR LOOP: Maintaining Pneumatic Components in Measurement and Control

TUNE YOUR LOOP: Questions to keep you sharp.



1. According to ISA Standard S7.0.01, the maximum size for any particles suspended in instrument air is _____________ micrometers (1 micrometer =0.000001 meter).

  1. 2
  2. 10
  3. 40
  4. 100[/ordered_list}

2. A device within an instrument air system that provides cleaning of the airstream by
removing particulate matter from the dryer discharge is the ____________.

  1. aftercooler
  2. separator
  3. compressor
  4. afterfilter[/ordered_list]

3. Which of the following elements is designed to translate a pressure change to
motion, with the motion being used to move an indicator or initiate a pneumatic

  1. bellows
  2. bourdon tube
  3. diaphragm
  4. all of these[/ordered_list]

4. A pneumatic transmitter that uses a mechanism which generates a signal by
opposing forces rather than by palpable motion of its parts, is categorized as a
_____________ transmitter.

  1. force-balanced
  2. motion-balanced
  3. torque-balanced
  4. rotary balanced[/ordered_list]


What are your answers before you read ahead?

1. c

2. d

3. d

4. a


From the ISA Course Maintaining Pneumatic Components in Measurement and Control (TI06) pre-instructional survey.


Related Posts

What Is Functional Safety?

Functional safety focuses on the detection of a potentially dangerous condition and depends on automatic ...
Jennifer Infantino Halsey Apr 7, 2020 5:15:00 AM

Companies Ramp Up Production of N95 Masks in Response to COVID-19

COVID-19 has exponentially increased the need for N95 disposable masks in hospitals and medical facilitie...
Kara Phelps Apr 3, 2020 5:15:00 AM

Newsweek Vantage Report on Cyber Risks to Critical Infrastructure: ISA's the Expert Partner

Newsweek Vantage recently published an independent report on cyber risks to critical infrastructure—and t...
Kara Phelps Mar 24, 2020 3:11:27 PM