Endress+Hauser Proline 100 Modbus RS485 Brief Operating Instructions page 6

Document information
Symbol Meaning
Protective Earth (PE)
A terminal which must be connected to ground prior to establishing any other connections.
The ground terminals are situated inside and outside the device:
• Inner ground terminal: Connects the protectiv earth to the mains supply.
• Outer ground terminal: Connects the device to the plant grounding system.
1.1.4 Tool symbols
Symbol Meaning
Torx screwdriver
Cross-head screwdriver
Open-ended wrench
1.1.5 Symbols in graphics
Symbol Meaning
1, 2, 3,... Item numbers
A, B, C, ... Views
Hazardous area
-
Flow direction
6
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 100 Modbus RS485
Endress+Hauser