Commissioning
Liquicap M FTI51, FTI52
62
Hauser
6.2.7
Setting the switch point adjustment
!
Note!
• If only one calibration (empty or full) was carried out, and if buildup forms on the rod probe while
the probe is in operation, the device may no longer respond to changes in level. A switch point
adjustment (e.g. 4, 8, 16, 32 pF) compensates for this condition and ensures that you obtain a
constant switch point again.
• For media that do not have a tendency to build up, we recommend a setting of 2 pF, as the probe
is most sensitive to changes in level at this setting.
• For media with heavy buildup (e.g. plaster), we recommend using probes with active buildup
compensation.
• A switch point adjustment can be carried out only if a full
or
empty calibration has been carried
out first.
• A switch point adjustment is not possible if an empty
and
a full calibration have been carried out.
• The switch point adjustment is disabled if you switch on the two-point control (as described on
Page 63).
To adjust the switch point, proceed as follows:
1.
Turn the function switch to position 3.
The green LED 1 lights up (factory setting).
2.
Press the "+" key for at least two seconds to switch to the next higher value. If you press and
hold down the "+" or "–" key, the value changes to the next one every two seconds. The active
value is indicated by an LED (1 to 5).
After you have carried out the switch point adjustment, turn the function switch 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)
3
Switch point adjustment
Press for <
Press for >
On *
(2 pF)
Off
(4 pF)
Off
(8 pF)
Off
(16 pF)
Off
(32 pF)
**
*
These settings are factory settings.
** 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
_
+
D
c
