Liquiphant M FTL50(H), FTL51(H)
16 Endress+Hauser
Electronic insert FEL57 (PFM)
Power supply Supply voltage: 9,5...12,5 V DC
Current consumption: 10...13 mA
Power consumption: < 150 mW
Reverse polarity protection
Electrical connection Two-wire connection for separate switching unit
For connecting to switching units
Nivotester FTL320, FTL325P,
FTL370, FTL372, FTL375P
(also with cyclical checking)
Commutec SIF101, SIN111
from Endress+Hauser.
Output signal jump of PFM signal
from high to low frequency
when sensor is covered.
Switching between minimum/maximum
safety in the Nivotester.
Additional function "cyclical checking":
After interruption of the power supply,
a test cycle is activated which checks
the sensor and electronics without any
change in level.
Approved for overfill protection acc. to WHG,
Germany.
The following can be switched at the
electronic insert:
– Standard (STD):
for low corrosive liquids;
simulation approx. 8 s
tuning fork exposed – covered – exposed.
– Extended (EXT):
for highly corrosive liquids;
simulation approx. 41 s
tuning fork exposed – covered – corroded –
exposed.
The check is activated and monitored at the
switching unit.
L00-FTL5xxxx-04-05-xx-en-003
–+
78
33 34
37 38
d4 d2
z6 d6
z4 z2
21
PFM
50 /
150 Hz
E
X
E
X
12
FEL57
EEx ia
Nivotester
FTL320
FTL325P 1CH
FTL325P 3CH
FTL370/372
FTL375P 1CH
Input 1
FTL372
FTL375P 2CH
Input 2
FTL375P 3CH
Input 3
Commutec S
SIF101, SIF111
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