17
e
11 Operation without matrix
Reset
A reset causes most of the instrument
settings to return to the factory
settings. The following parameters are
not affected by a reset:
• all linearization parameters
• the Tag number (VAH0)
• the m/ft selection (V8H2)
"
Reset
#
Calibration
In order to obtain a steady measured
value, a short time must elapse before
the empty and full calibration.
• 2-wire: approx. 35 s
• 4-wire: approx. 20 s
• Empty calibration 0 %
- fill tank to “empty” point
- simultaneously press - and +
• Full calibration 100 %
- fill tank to “full” point
- simultaneously press V and H
$
Locking
Protects the entries against unwanted
and unauthorized changes
• simultaneously press + and V
%
Unlocking
• simultaneously press - and H
Caution!
If the parameters are locked by
pressing pushbuttons, the
parametration is no longer possible via
the display, handheld etc.
2-wire
4-wire
V
+
H
!
4 ...
4
+
20 mA
5
-
V
+
V
+
H
+
H
➂
Lock parameters
➀
Reset
➁
Full calibration
➁
Empty calibration
➃
Unlock parameters
4 mA
20 mA
green LED
confirms action
on
on
on
on
on
off
off
off
off
off
green LED
BD
Full = 20 mA
Empty = 4 mA
E
F