Endress+Hauser Liquiphant FTL31 - Commissioning; 7.1 Function Checks; 7.2 LED Display Overview

Liquiphant FTL31 Commissioning
Endress+Hauser 29
7 Commissioning
7.1 Function check
Go through the following checklists before commissioning:
• "Post-installation check" checklist
• "Post-connection check" checklist
The function of the tuning fork can be tested by immersing the tuning fork in a vessel
containing water.
7.2 LED display
A
B
1
2
3
4
12
3
2
3
1
1
2
3
A0016856
A M12 plug, (cable without graphic)
B Valve plug
1 Green LED (gn)
2 Yellow LED (ye)
3 LED red
Function Description
Green LED (gn)
Lit
Device is operational
Yellow LED (ye)
Lit
M12 plug
Indicates the sensor state: tuning fork is covered by liquid
Valve plug / cable
Indicates the switching state:
• MAX operating mode (overfill protection): sensor is not covered by liquid
• MIN operating mode (dry running protection): the sensor is covered by liquid