Line Symbols
On the P&ID, different types of lines are used to indicate specifically what is passed along the connection from one instrument to the next.
 |
Instrument Supply | ||
 |
Connection to Process | ||
 |
Pneumatic Signal | ||
 |
Electronic Signal | ||
 |
Hydraulic Signal | ||
 |
Capillary Tube | ||
 |
Electromagnetic or Sonic Signal (Guided) |
||
 |
Software Link | ||
 |
Mechanical Connection |
