Endress+Hauser Liquiphant FTL41 Brief Operating Instructions page 18

Electrical connection
Terminal assignment
A
MAX
MIN
1
3
PE
 16 FEL42 terminal assignment
A Terminal assignment at electronic insert
B Terminal assignment on M12 plug
18
U = 10...55 V DC
I max: 350 mA
1
L+ L- 3
>0,7
>0,5
1 2 3
0.5 A
L+ L-
K
I 350 mA
I
max
L
U 55 V
max
M12
4
1
K
Liquiphant FTL41
B
3
4 3 1
2
K
Endress+Hauser
L- L+
A0036056