Precisa 490 IB Series, Operating Instructions Manual, Page: 41 / 46

14 Service ■
39
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14.3.2 External calibration with freely selectable weight
For external calibration with user-definable weight, „SET CALIBRATION MODE EXT. -DEF.“ must be selected
in the Configuration menu (see chapter 8.3.5 "Calibration functions").
Then, the effective value of the calibration weight (DEF. n.nnn g) must be entered with up to tenfold preci-
sion compared with the balance.
Then proceed as follows:
14.3.3 Internal calibration
For internal calibration with the built-in calibration weight „SET CALIBRATION MODE INTERNAL“ must be
selected in the Configuration menu (see chapter 8.3.5 "Calibration functions").
Then proceed as follows:
• Switch to „WEIGHING“ with the Change key
• Press «
T » until „CALIBRATION“ is shown.
• Calibration is finished after a certain period of time
14.3.4 Automatic calibration
For automatic calibration with the built-in calibration weight „SET CALIBRATION MODE AUTO“ must be se-
lected in the Configuration menu (see chapter 8.3.5 "Calibration functions").
The balance now calibrates itself automatically every 24 hours and/or after each temperature change of 3
degrees Celsius, depending on the definition in the Configuration menu „SET CALIBRATION MODE AUTO“.
The time of the automatic calibration is as determined in the Configuration menu under „SET CALIBRATION
- - 100
9
After the zero measurement the display flashes with the rec-
ommended calibration weight.
- - 100
9
Place the calibration weight on the weighing pan.
The display continous to flash.
+100,0000
9
Calibration is complete when the display stops flashing
NOTE
If calibration is carried out with the free weight, then only this weight may be used.
Display Key Step
+0,0000
9
The balance is in Weighing mode.
+0,0000
9
« T »
Press until „CALIBRATION“ apears.
CALIBRATION
- - 0000
9
The balance carries out a Zero measurement „0000 g“ is
shown flashing).
- - 112
9
After the zero measurement the display flashes with the pre-
viously entered calibration weight.
- - 112
9
Place the calibration weight.
The display continous to flash.
+112,0025
9
Calibration is complete when the display stops flashing
Display Key Step