Output; Performance Characteristics - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Technical data
82
10.4

Output

10.4.1 Galvanic isolation
FEI51, FEI52
between rod probe and power supply
FEI54:
between rod probe, power supply and load
FEI53, FEI55, FEI57S
see connected switching device (functional galvanic isolation in the electronic insert)
10.4.2 Switch behavior
Binary or Δs operation (pump control)
10.4.3 Switch-on behavior
When the power supply is switched on, the switching status of the outputs corresponds to the signal
on alarm.
The correct switch condition is reached after max. 3 seconds.
10.4.4 Failsafe mode
Minimum/maximum quiescent current safety can be switched at the electronic insert (for FEI53
and FEI57S only at Nivotester FTCxxx)
MIN = minimum safety: The output switches safety-oriented when the probe is uncovered
(signal on alarm). For use for dry running protection and pump protection for example
MAX = maximum safety: The output switches safety-oriented when the probe is covered
(signal on alarm). For use with overfill protection for example
10.4.5 Switching delay
FEI51, FEI52, FEI54, FEI55
Can be adjusted incrementally at the electronic insert: 0.3 to 10 s
FEI53, FEI57S
Depends on the connected Nivotester transmitter
10.5

Performance characteristics

10.5.1 Reference operating conditions
• Temperature: +20 °C ±5 °C
• Pressure: 1013 mbar abs. ±20 mbar
• Humidity: 65 % ±20%
• Medium: water from mains (conductivity ≥ 180 μS/cm)
10.5.2 Switch point
Reproducibility: 0.1 % (related to the probe length)
Liquicap M FTI51, FTI52
Endress+Hauser