British Standards Document
BS 1646-1
Symbolic representation for process measurement control functions and instrumentation. Basic requirements

https://doi.org/10.3403/00099793U

BS 1646-1 is maintained by TPR/1. The current release of this standard is:

BS 1646-1:1979 Symbolic representation for process measurement control functions and instrumentation. Basic requirements

https://doi.org/10.3403/00099793 (published 30/11/1979)

This standard is available from the following sources:

Other historical versions of this standard document also exist: