Liquiphant M FTL50(H), FTL51(H)
Endress+Hauser 5
Electronic versions
for level limit switches
FEL51:
Two-wire AC version;
Switch the load directly into the power supply circuit via the thyristor.
FEL52:
Three-wire DC version;
Switch the load via the transistor (PNP) and separate connection.
FEL54:
Universal current version with relay output;
Switch the loads via 2 floating change-over contacts.
Electronic versions
for level sensor
FEL55:
For separate switching unit; signal transmission 16/8 mA along two-wire cabling.
FEL56:
For separate switching unit; signal transmission L-H edge 0.6…1.0 / 2.2…2.8 mA
to EN 50227 (NAMUR) along two-wire cabling.
FEL58:
For separate switching unit; signal transmission H-L edge 2.2…3.5 / 0.6…1.0 mA
to EN 50227 (NAMUR) along two-wire cabling.
Checking of connecting cabling and other devices by pressing a key on the electronic insert.
FEL57:
For separate switching unit; PFM signal transmission;
Current pulses superposed on the power supply along the two-wire cabling.
Cyclical checking from the switching unit without changing levels.
FEL50A:
For connecting to PROFIBUS PA;
Cyclic and acyclic data exchange acc. to PROFIBUS PA Profile 3.0 Discrete Input
Galvanic isolation FEL51, FEL52, FEL50A:
Between sensor and power supply
FEL54:
Between sensor and power supply and load
FEL55, FEL56, FEL57, FEL58:
See Switching unit connected
Design FTL50:
Compact
FTL51:
With extension pipe
FTL50H:
Compact, with polished tuning fork and hygienic process connections
FTL51H:
With extension pipe, polished tuning fork and hygienic process connections
Input
Measured variable Level (limit value)
Measuring range
(detection range)
FTL50:
Depends on mounting point.
FTL51:
Depends on mounting point and the pipe extension. Standard 3000 mmm (up to 6000 mm on request)
Product density Adjustment on the electronic insert > 0.5 g/cm
3
or > 0.7 g/cm
3
(other on request)
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