Proving, Commissioning, and Troubleshooting a Loop (12410-16)

Testing the components of a loop for functionality without using live process is known as

proving

Mechanical inspection, which includes checking for damage and improper components, is done

by visual inspection

If slightly damaged signal wiring or broken conduit is not repaired, the result can be

intermittent behavior

In a continuity test, a loop should not show excessive leakage or excessive

resistance

Generally, to test an electrical loop, the test instrument should be able to supply

Power

A pneumatic tester may have a built-in pressure source or it may require a

hand pump

During loop proving, the process must be

simulated

A device that is capable of both supplying a loop's power and reading the output signals of each of the instruments in the loop is a

multifunction calibrator

A process loop cannot be tuned until it has been

Calibrated

A normal calibration involves setting the zero and

Span

A database and communications system that help manage a plant's instruments, maintenance, calibration, and other resources is known as a(n)

IAMS

Commissioning cannot be considered complete without full

documentation

The drawing that shows all of the connection details of the control system components arrange into a loop is the

Loop diagram

A list of instrument tag numbers may be found on the

instrument index

In the final stages of commissioning, the loop control is run in

automatic

Although this is usually done at the factory or during proving, a typical commissioning procedure includes verifying that the instruments have been

Calibrated

When identifying a problem ina loop, a useful place to look is the loop's

maintenance records

In order to effectively troubleshoot a loop, it is crucial to

understand the loop's operation

A process that reacts to a disturbance and never stabilizes in a reasonable time period is said to be

oscillating

A useful way of exploring whether the controller is at fault in a loop problem is switching it to

manual mode