Proline Promass Q 300
4
Hauser
Document information
Symbols used
Electrical symbols
Symbol
Meaning
Direct current
Alternating current
Direct current and alternating current
Ground connection
A grounded terminal which, as far as the operator is concerned, is grounded via a
grounding system.
Protective ground connection
A terminal which must be connected to ground prior to establishing any other
connections.
Equipotential connection
A connection that has to be connected to the plant grounding system: This may be a
potential equalization line or a star grounding system depending on national or
company codes of practice.
Communication symbols
Symbol
Meaning
Wireless Local Area Network (WLAN)
Communication via a wireless, local network.
Bluetooth
Wireless data transmission between devices over a short distance.
LED
Light emitting diode is off.
LED
Light emitting diode is on.
LED
Light emitting diode is flashing.
Symbols for certain types of information
Symbol
Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation
A
Reference to page
Reference to graphic
Visual inspection
