Endress+Hauser Liquiphant M FTL50H - Application Details and Principles; Level Detection and Measuring Principle

Liquiphant M FTL50(H), FTL51(H)
4 Endress+Hauser
Application
Level limit detection Maximum or minimum detection in tanks or pipes containing all kinds of liquids, including use in hazardous
areas, food and pharmaceuticals
L00-FTL5xxxx-11-05-xx-xx-000
Function and system design
Measuring principle The sensor's fork vibrates at its intrinsic frequency.
This frequency is reduced when covered with liquid. The change in frequency then activates a limit switch.
Modularity
Level limit switch
Liquiphant M FTL with electronic versions
FEL51, FEL52, FEL54
L00-FTL5xxxx-15-05-xx-xx-000
Level sensor
Liquiphant M FTL with electronic versions
FEL55, FEL56, FEL57, FEL58
for connecting to a separate switching unit or
or an isolating amplifier FEL50A
for connecting to PROFIBUS PA segment
L00-FTL5xxxx-15-05-xx-en-000
FEL51/52/54
…
…
FEL55/56/57/58/50A
Ex i
E X E X
Switching unit
PLC
Isolating
amplifier
Segment
coupler