Endress+Hauser Proline Promag Operating Instructions Manual page 6

Document information
Symbol Meaning
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.
1.1.4 Communication 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 flashing.
1.1.5 Tool symbols
Symbol Meaning
Torx screwdriver
Cross-head screwdriver
Open-ended wrench
1.1.6 Symbols in graphics
Symbol Meaning
1, 2, 3,... Item numbers
A, B, C, ... Views
Hazardous area
-
Flow direction
6
Symbol Meaning
Bluetooth
Wireless data transmission between
devices over a short distance.
LED
Light emitting diode is on.
Symbol Meaning
Flat blade screwdriver
Allen key
Symbol Meaning
, , ... Series of steps
1. 2. 3.
A-A, B-B, C-C, ... Sections
Safe area (non-hazardous area)
.
Proline Promag
Endress+Hauser