Guided electromagnetic or sonic signal
ISA 5.1-2009/2022 (instrument line symbols)
Drawn as
A thin solid line with small sine-wave marks on it at intervals.
Meaning
Signal carried along a guide: fibre optic, or a guided-wave radar probe (signal down the rod). Not modelled.
Variants
- Some legends draw guided signals as a solid line with small loops
- The exact mark varies between editions and company legends; check the legend
Not physical hardware. Read it, then skip it in the 3D model.