Liquiphant S FTL70, FTL71
12
Electronic insert FEL57 (PFM)
Power supply
Supply voltage: 9.5 to 12.5 V DC
Current consumption: 10 to 13 mA
Power consumption: < 150 mW
Reverse polarity protection
Electrical connection
Two-wire connection for separate switching unit
For connecting to Nivotester switching units:
FTL320, FTL325P, FTL370, FTL372, FTL375P
(also with cyclical checking), from
Hauser.
Output signal jump of the 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 (German
Water Resources Act).
The following can be switched at the electronic insert:
–
Standard
(STD):
Corrosion of the fork unlikely;
simulation approx. 8 s
tuning fork exposed – covered – exposed.
This setting tests level reporting in the Nivotester
during cyclical checking.
–
Extended (EXT)
:
Corrosion of the fork possible;
Simulation approx. 41 s: tuning fork exposed –
covered – corroded – exposed.
This setting tests level reporting and alarm
notification in the Nivotester during cyclical
checking.
L00-FTL5xxxx-04-05-xx-en-003
–
+
7
8
33
34
37
38
d4
d2
z6
d6
z4
z2
PFM
50 /
150 Hz
EX
EX
1 2
FEL57
EEx ia
Nivotester
FTL320
FTL325P 1CH
FTL325P 3CH
FTL370/372
FTL375P 1CH
Input 1
FTL372
FTL375P 2CH
Input 2
FTL375P 3CH
Input 3
