Preliminary Operations - Nussbaum WA 780 Manuel D'instructions

Calibration programme
This window allows the user to check and/or
perform measuring sensor calibration.
Access the programme and level the meas-
uring sensors as requested. The procedure
required can be selected using the F11
menu.
The following keys are active in this window:
F1 displays the on-line "Help"
function.
F11
displays the menu with the
relative functions.
These are the menu options:
• Start context (Goes back to the starting
screen)
• Mechanical calibration check (displays
the mechanical conditions of the heads)
• Calibration check (checks the electronic
calibration of the heads - values should
be around zero)
• Full scale calibration (carries out com-
plete calibration (zeros + full scale) of
the inclinometers
• Zero calibration (carries out calibration
of the zeros of the inclinometers)
• Help (recalls the Help screen relative to
the current screen).
Only the zero and full scale calibration pro-
cedure is described below, because it in-
corporates the zero calibration procedure.

Preliminary operations

- Place the stand in front of the central unit
so that it is perfectly levelled and stable.
- Place the measuring sensors on the stand,
each in its correct position (fig. 35).
User Manual WA 780 - Cura S 780
Right Front Ref.
Left Front Ref.
- Level the sensors using the special spirit
level and then lock them into position.
- Switch on the measuring sensors and the
central unit.
- Select the calibration programme.
You will be asked to confirm the selection
made.
- Confirm with the F3
(to abort, use F2
Calibration
- Wait for the automatic zero setting of all
transducers and the full scale setting of
the inclinometers
- Place the "high" shim under foot "3"
- Wait for the data acquisition
- Place two "high" shims under feet "1" and
"2"
- Wait for the data acquisition
- Place the "low " shim under foot "3" and
then the "medium" shim under foot "2"
- Wait for the data acquisition
- Place the "low " shim under foot "3" and
then the "medium" shim under foot "1"
- Wait for the data acquisition
- Place the "low" shim under foot "3"
- Place the "medium" shim under foot "1"
Right Rear Ref.
Left Rear Ref.
35
key
).
GB
103