ADOS S.R.L. Buccinasco (MI)
492-MTU10006
Rev. 4
Page 46 of 49
6.4.2
Span calibration
The weighing system must be set with a KNOWN weight that is greater than 12.5% of the Span.
The precision of the Span calibration is greater the closer the known weight is to the full scale value.
The system is set to perform the calibration with a known weight corresponding to the value of the weight
currently on the balance.
The operator can modify this setting by changing the value of the known weight directly (using the numeric
keys) and by using the
F
key to increase the value on the display. The increase is performed in steps of
one division or, by continuing to press the
F
key, in larger and larger steps up to a maximum of 128
graduation.
After pressing the
E
key, the instrument prepares to receive the confirmation command and flashes the
following writing on the display:
C A L
F S
1 2 3 4 5
Press the
E
key again and the instrument starts the zero calibration procedure. The display shows the
waiting time:
W A I T
5
During the waiting time the load cell signal is integrated and it must stay stable.
When the wait time expires instrument performs the zero calibration and displays the following message for
2 seconds:
D O N E
and returns automatically to the calibration menu.
If the value of the known weight set is lower than 12.5% of FS, the instrument displays the following signal
for two seconds:
E R R O R 1
and returns automatically to the calibration menu.
If the load cell signal available is too low, the instrument displays the following signal for two seconds:
E R R O R 2
and returns automatically to the calibration menu.