In loop checks, all of the following are performed EXCEPT what?

In loop checks, the primary goal is to verify the functionality and integrity of the control loop. This involves several critical processes to ensure that the system operates as intended. Among the tasks performed during loop checks, continuity tests ensure that there is an uninterrupted electrical connection throughout the loop, which is essential for the accurate transmission of signals. Proving involves testing the entire control loop in a systematic manner to confirm that each component behaves as expected, and calibrating ensures that the sensors and transmitters provide accurate measurements and responses based on known standards.

Tuning, on the other hand, is typically a separate process focused on optimizing the control parameters of the loop for specific operational performance and stability. It involves adjusting the controller settings to achieve the desired response characteristics in the system, such as responsiveness or overshoot. While tuning may be critical for overall system performance, it is not a standard part of the loop check process, which focuses more on verifying the physical and electrical integrity of the components within the loop rather than adjusting their operational parameters. Therefore, tuning is the exception in the context of tasks performed during loop checks.