Endress+Hauser Liquiphant FTL33 Operating Instructions Manual page 26

Electrical connection
6.1.2 Electronic version 2-wire AC/DC
The load is switched via an electronic switch directly in the power supply circuit. Always
connect in series with a load!
Not suitable for connection to low-voltage PLC inputs!
Selection tool for relays
P/S
2.7
2.5
2.3
2.1
1.9
1.7
1.5
1.3 P1
1.1
0.9
0.7
P2
0.5
20 24
 13 Minimum rated power of the load
P/S Rated power in [W] / [VA]
U Operating voltage in [V]
P1: AC mode
Relay operating voltage: Relay rated power
• 24 V: 1.3 to 6 VA
• 110 V: 1.5 to 27.5 VA
• 230 V: 2.5 to 57.5 VA
26
27 43 48 53 60 110 121 207 230 253
Liquiphant FTL33
U
A0023486
Endress+Hauser