This document applies to graphical symbols for the basic representation of process instrumentation and controls including conventional measurement and control equipment.
DIN 19227-1:1993 history
2014DIN 28000-4:2014 Chemical apparatus - Documentation in the life cycle of process plants - Part 4: Graphical symbols of valves, pipes and actuators
1993DIN 19227-1:1993 Control technology; graphical symbols and identifying letters for process control engineering; symbolic representation for functions