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Elektronic insert FEC 22
Switch point optimisation is switched on or off using the operating elements on
the FEC 22.
Procedure
• Turn the rotary switch to
Position 2.
• When first delivered or
after a reset the extreme
left LED in the chain
lights up: switch point
optimisation
de-activated.
• Press the right key.
• The extreme right LED in
the chain lights up:
switch point optimisation
activated.
Switch point optimisation can be de-activated (Procedure see Fig. 6.2).
The FEC 22 then operates with the capacitance stored in its memory (capacitance
when empty C
or capacitance when probe covered C
L
point capacitance C
. The latter is no longer changed.
S
Procedure
• Turn the rotary switch to
Position 1.
• The current switch point
difference ∆C can be
read off on the LED
chain (Assigning values
see Fig. 6.3).
Note!
The current switch point difference ∆C (rotary switch in Position 1) can only be
displayed if:
• both calibrations (probe uncovered and probe covered) have been carried out
• a calibration when probe uncovered has been carried out and switch point
optimisation activated
• a calibration when probe covered has been carried out and switch point
optimisation activated
Endress+Hauser
All manuals and user guides at all-guides.com
2x
OFF
1x
OFF
OFF
0x
) and the calculated switch
H
>32
∆C
∆C
<4
4-8
8-16
16-32
=
pF
pF
pF
pF
pF
∆C = 0.5 x (C
- C
)
H
L
∆C = C
- C
S
L
∆C = C
- C
H
S
ON
ON
ON
1
7
3
∆
∆
1
c
c
7
3
1
7
3
1
7
3
∆
∆
c
c
6 Additional Settings
Activating switchpoint
optimisation
Fig. 6.2
Activating switch point
optimisation
Deactivating switch
point optimisation
Current switch point
difference ∆C
Fig. 6.3
Display of current switch point
difference ∆ C
Note!
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