Proline Prosonic Flow P 500
4 Endress+Hauser
About this document
Symbols 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.
Potential equalization connection (PE: protective earth)
Ground terminals that must be connected to ground prior to establishing any other
connections.
The ground terminals are located on the interior and exterior of the device:
• Interior ground terminal: potential equalization is connected to the supply network.
• Exterior ground terminal: device is connected to the plant grounding system.
Communication-specific symbols
Symbol Meaning
Wireless Local Area Network (WLAN)
Communication via a wireless, local network.
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
Reference to page
Reference to graphic
Visual inspection