Where would an instrument fitter find the proper method to connect an instrument to a process tap?

The proper method to connect an instrument to a process tap is found in an installation detail. This is because installation details provide specific instructions and diagrams that outline how equipment should be installed, including the necessary connections and fittings required for integration into the process. They are designed to give clear and precise directions to ensure that installation is conducted safely and correctly, addressing aspects such as pipe sizes, types of connections, and orientations necessary for proper functioning.

The other options, while related to the documentation of processes and equipment, do not specifically convey the technical details required for connections. The title block provides general project information but does not include installation specifics. A flow diagram represents the relationship between different equipment in a system but lacks the detailed connection methods. An instrument balloon, though useful for indicating the presence and specifications of an instrument, does not detail how to physically connect it to the process. Therefore, the installation detail is the most reliable source for understanding the connection requirements.