Liquiphant M FTL51C
Endress+Hauser 19
Connection and function
Connecting cables • Electronic inserts: cross-section 2.5 mm
(14 AWG); strand in ferrule as per DIN 46228
• Protective ground in housing: cross-section
2.5 mm
(14 AWG)
• External equipotential bonding connection on housing: cross-section 4 mm
(12 AWG)
Safety mode Minimum/maximum residual current safety selectable on electronic insert
(with FEL57 on Nivotester only)
MAX = maximum safety:
The output switches to the power fail response when the fork is covered
For use with overfill protection for example
MIN = minimum safety:
The output switches to the power fail response when the fork is exposed
For use with dry running protection for example
Switching time When fork is covered: approx. 0.5 s
When fork is exposed: approx. 1.0 s
Additionally configurable for PROFIBUS PA: 0.5 to 60 s
Other switching times available on request.
Switch-on behavior When switching on the power supply, the output assumes the alarm signal.
After
3 s it assumes the correct switching mode (exception: FEL57)
Performance characteristics
Reference operating
conditions
Maximum measured error Under reference operating conditions: max. +/–1 mm (0.04 in)
Repeatability 0.1 mm (0.004 in)
Hysteresis ECTFE and PFA: approx. 2 mm (0.08 in)
Enamel: approx. 2.5 mm (0.1 in)
Influence of medium
temperature
ECTFE and PFA: max. +1.4 mm to –2.8 mm (–50 to +120 °C / -58 to 248 °F)
Enamel: max. +0.6 mm to –1.5 mm (–50 to +150 °C / -58 to 302 °F)
Influence of medium density max. +4.8 mm to –3.5 mm ((0.5 to 1.5 g/cm
(SGU))
max. +0.19 in to -0.14 in
Influence of medium pressure ECTFE and PFA:
max. 0 mm to –2.0 mm (0 bar to 40 bar)
max. 0 in to -0.08 in (0 psi to 580 psi)
Enamel:
max. 0 mm to –1.0 mm (0 bar to 25 bar)
max. 0 in to -0.04 in (0 psi to 363 psi)
Switching delay • When fork is covered: 0.5 s
Ambient temperature: 23 °C (73 °F)
Medium temperature: 23 °C (73 °F)
Medium density (water): 1 g/cm
(SGU)
Medium viscosity: 1 mm
/s (cSt)
Medium pressure p
e
: 0 bar (0 psi)
Sensor mounting: vertical from above
Density switch: to > 0.7 g/cm³ (SGU)
L00-FTL5xxxx-06-05-xx-xx-031
* Switch point under reference operating conditions
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