Commissioning
Liquicap M FTI51, FTI52
60
Hauser
6.2.5
Carrying out empty and full calibration
!
Note!
• An empty and full calibration provides the greatest possible operational security. This is
particularly recommended for critical applications.
• The empty and full calibration measures the capacitance values of the probes when the tank is full
and when it is empty. If, for example, the measured capacitance value of the empty calibration is
50 pF and that of the full calibration is 100 pF, the average capacitance value, 75 pF, is stored as
the switch point.
To carry out an
empty calibration
, proceed as follows:
1.
Check to make sure that the probe is not covered with product.
2.
Turn the function switch to position 2.
3.
Press the "–" key for at least two seconds.
4.
Release the "–" key when the green LED 1 starts to flash.
The process of saving the empty calibration is finished when the green LED 1 lights up continuously.
You can turn the function switch back to position 1 to return to operation.
To carry out a
full calibration
, proceed as follows:
1.
Make sure that the probe is covered by the medium up to the desired switch point.
2.
Turn the function switch to position 2.
3.
Press the "+" key for at least two seconds.
4.
Release the "+" key when the green LED 5 starts to flash.
The process of saving the full calibration is complete when the green LED 5 lights up continuously.
You can turn the function switch back to position 1 to return to operation.
Function switch
position
Function
– key
+ key
Light emitting diodes (LED signals)
A
B
C
1 (green)
2 (green)
3 (red)
4 (green)
5 (green)
6 (yellow)
2
Empty calibration
Press
On
(present)
**
2
Full calibration
Press
On
(present)
**
** Switch status signaling (on/off/flashing) depends on the mounting location selected and the failsafe mode (MIN/MAX) set.
The LED flashes if a calibration has not yet been carried out.
1
7
3
5
_
+
