TUNE YOUR LOOP: Troubleshooting Instrumentation and Control Systems

TUNE YOUR LOOP: Questions to keep you sharp.

Tune Your Loop is a series of posts consisting of questions from ISA Training Courses.

1. What is the purpose of troubleshooting?

2. The first step in troubleshooting is to:

  1. Put the controller in manual.
  2. Identify and locate the problem.
  3. Verify that something is wrong.
  4. Verify the problem is fixed.
  5. Fix the problem.

3. The last step in troubleshooting is to:

  1. Fix the problem.
  2. Verify that something is wrong.
  3. Verify that the problem is fixed.
  4. Follow-up to prevent future problems.
  5. Verify good controller tuning.

4. Select the one component that is not required in a feedback control loop:

  1. Controllers
  2. Transmitters
  3. Final Control Elements
  4. Transducer
  5. Sensor

5. Standard analog instrument current signal is:

  1. 1 to 5 mA
  2. 0.25 to 1.25 mA
  3. 4 to 20 mA
  4. 3 to 15 mA
  5. 3 to 27 mA

 

What are your answers before you read ahead?

1. To confirm that a problem exists, to identify the problem, to restore proper
operation.

2. c

3. d

4. d

5. c

 

From the ISA Course Troubleshooting Instrumentation and Control Systems (TC10) pre-instructional survey.

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