| 340 / | HD | COMMUNICATIONS: ELECTRICAL |
| 500 | DF | CONDITION RESPONSIVE INDICATING SYSTEM {6} |
| 540 | DF | .~ Specific condition {18} |
| 603 | DF | .~.~ Fluent material {7} |
| 612 | | .~.~.~ Material level {6} |
| 613 | DF | .~.~.~.~> Weight in container |
| 614 | DF | .~.~.~.~> Pressure |
| 615 | DF | .~.~.~.~> Moving sensor (e.g., impeller) |
| 616 | DF | .~.~.~.~> Overflow |
| 617 | DF | .~.~.~.~> Pulverant material (e.g., bin) |
| 618 | DF | .~.~.~.~> Liquid {5} |