In instrument tagging, what does the numeric portion typically identify?

In instrument tagging, what does the numeric portion typically identify?

• A. The plant area
• B. The calibration method
• C. The instrument's unique identifier
• D. The device manufacturer

Answer: (C)

Your tag’s numeric portion serves as the instrument’s unique identifier within the plant’s tagging system. It’s the specific number that distinguishes this particular device from every other instrument, even if they’re the same type in different locations. That unique ID is what you use to pull up calibration certificates, maintenance history, spare parts, and wiring diagrams in the asset management system. The numeric portion is not meant to convey where the device is (that’s usually indicated by the letters or prefix), how it’s calibrated (that information is in the records, not the ID itself), or who made it (manufacturer is typically stored separately). So the numeric part is the exact ID you reference for all records and work related to that instrument.

Your tag’s numeric portion serves as the instrument’s unique identifier within the plant’s tagging system. It’s the specific number that distinguishes this particular device from every other instrument, even if they’re the same type in different locations. That unique ID is what you use to pull up calibration certificates, maintenance history, spare parts, and wiring diagrams in the asset management system. The numeric portion is not meant to convey where the device is (that’s usually indicated by the letters or prefix), how it’s calibrated (that information is in the records, not the ID itself), or who made it (manufacturer is typically stored separately). So the numeric part is the exact ID you reference for all records and work related to that instrument.