What indicates control loop number?

What indicates control loop number?

• A. 100
• B. 101
• C. 100 and 101
• D. Loop 100/101

Answer: (C)

Control loop numbers are the identifiers used to distinguish each closed-loop control path in the plant. You’ll see these numbers on instrument tags and in the control system displays, so you can trace a measurement, controller, and final element back to the exact loop it belongs to. Here, there are two loops in question, numbered 100 and 101. Each loop has its own numeric tag, so both numbers together tell you which loops are involved. That’s why listing both 100 and 101 is the best way to indicate the loop numbers—the numbers themselves are the precise identifiers you’d use in documentation, troubleshooting, and setup. Saying simply 100 or just 101 would miss the other active loop, and “Loop 100/101” isn’t as direct for identifying the exact loops by their numeric IDs.

Control loop numbers are the identifiers used to distinguish each closed-loop control path in the plant. You’ll see these numbers on instrument tags and in the control system displays, so you can trace a measurement, controller, and final element back to the exact loop it belongs to.

Here, there are two loops in question, numbered 100 and 101. Each loop has its own numeric tag, so both numbers together tell you which loops are involved. That’s why listing both 100 and 101 is the best way to indicate the loop numbers—the numbers themselves are the precise identifiers you’d use in documentation, troubleshooting, and setup.

Saying simply 100 or just 101 would miss the other active loop, and “Loop 100/101” isn’t as direct for identifying the exact loops by their numeric IDs.