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This document is about ground loops and electrical interference in process controls and electrical instrumentation. It explains what ground loops are, how they can cause inaccurate sensor readings, and provides tips and guidelines for preventing or mitigating them in an electrical system. It also discusses the potential effects of electromagnetic interference (EMI) and provides information on how to troubleshoot sensor health and performance issues.

 Ground Loops & Electrical Interference - Rev 1.2 PDF