Unguided electromagnetic, radio or sonic signal
ISA 5.1-2009/2022 (instrument line symbols)
Drawn as
A free sine wave with no straight line under it.
Meaning
Wireless or through-the-air signal: radio and WirelessHART transmitters, non-contact radar, nuclear level gauges, light and sound. Not modelled.
Variants
- Wireless instruments may also be marked "W" or have an antenna mark on the bubble
Not physical hardware. Read it, then skip it in the 3D model.