Endress+Hauser Flowmeter Proline 300 Brief Operating Instructions page 6

About this document
Symbol Meaning
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.
1.1.4 Communication-specific symbols
Symbol Meaning
Wireless Local Area Network
(WLAN)
Communication via a wireless, local
network.
LED
Light emitting diode is on.
LED
Light emitting diode is flashing.
1.1.5 Tool symbols
Symbol Meaning
Torx screwdriver
Phillips 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
Promag 10, 400, 800
Bluetooth
Wireless data transmission between
devices over a short distance.
LED
Light emitting diode is off.
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)
.
Flowmeter Proline 300
Endress+Hauser