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1. Introduction Instrumentation serves as the “nervous system” of industrial automation, while cables and wires act as the “blood vessels” that transmit signals and energy. Proper selection and installation of cables directly affect the stability, accuracy, and reliability of measurement systems.This document introduces four commonly used types of instrumentation cables and provides engineering recommendations. 2.

1. General Provisions 1.1 Purpose This procedure is established to ensure the personal safety of workshop personnel during equipment maintenance, inspection, and commissioning activities. It aims to standardize operational processes, promptly correct unsafe actions, and prevent safety incidents. 1.2 Scope of Application This procedure applies to all personnel in the instrument workshop, including maintenance staff,

1. Background and Rationale Under the principle of “No Work Without a Permit,” field instrumentation personnel often face a dilemma in emergency scenarios: Should they strictly wait for the completion of permit approval before starting work, or Take immediate action to mitigate the risk and potentially violate the rules? Since the introduction of the Work