36
vd84-201113
Adjustment on Zero Pressure
For adjustment on zero pressure the actual pressure inside the
sensor has to be less than 1 x10
-4
mbar!
The pressure reading must be less than 4x10
-2
mbar, other-
wise adjustment is denied and the error message "Err" dis-
played.
Switch the unit to Configuration Mode like described above and press Mode-Key
several times, until "CAL" is displayed.
After 5 more seconds the display shows:
After 5 more seconds the display shows:
Press Mode-Key for adjustment. During the
adjustment procedure the display shows
"CALI".
When the adjustment procedure is finished, the unit switches to Auto-Off Mode.
5.3 Pressure Units
To set the displayed pressure unit, switch the VD84 into Configuration Mode. For
this the instrument must be switched-off. Hold the Mode-Key pressed then, until
the display shows "rAtE".
Then press Mode-Key several times, until the display shows "unit":
After 5 more seconds the current unit setting is displayed:
Using the Mode-Key you can now select
"mbar", "Torr" or "hPa".
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