Technical Data; Input; Output - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Technical data

70
10 Technical data
10.1

Input

10.1.1 Measured variable
Level limit detection of change in capacitance between probe rod and container wall or ground tube,
depending on the level of a liquid.
10.1.2 Measuring range (valid for all FEI5x)
• Measuring frequency:
500 kHz
• Span:
∆C = 0 to 1600 pF
• Final capacitance:
C = max. 1600 pF
E
• Adjustable initial capacitance:
C = 0 to 500 pF (range 1 = factory setting)
A
C = 0 to 1600 pF (range 2)
A
10.1.3 Input signal
Probe covered => high capacitance
Probe not covered => low capacitance
10.2

Output

10.2.1 Galvanic isolation
FEI52:
Between rod probe and power supply
FEI54:
Between rod probe, power supply and load
FEI53, FEI55, FEI57S:
See connected switching unit
10.2.2 Switch behavior
Binary or ∆s operation (pump control)
10.2.3 Switch-on behavior
When the power supply is switched on, the switching status of the outputs corresponds to the signal
on alarm.
After max. 3 s the correct switching status is achieved.
Liquicap M FMI51, FMI52
Endress+Hauser