Originally published in 1984. As told by Tom McAvinew. The use of ISA-5.1, Instrumentation Symbols and Identification, originally published in 1984, is in general quite widespread. That is because it ...

A number of options are provided for adding information or simplifying the symbolism, if desired. The ISA5.1 subcommittee's latest publication is the updated ISA-5.1-2022, Instrumentation Symbols and ...