OHAUS DISCOVERY BALANCE, Руководство по обслуживанию

Страница: 91 / 99

APPENDIX B SERVICE CALIBRATION
B.4 Service Span Calibration
Span calibration from the service menu allows you to set a new zero and maximum setting.
This is distinct from user level span calibration, which allows a user to adjust the zero and
maximum setting within the range established by the service menu span setting.
NOTE:
The balance should be perfectly level before attempting a span calibration.
Use the balance’s leveling feet (at the rear of the balance), together with the
leveling bubble which is just inside the left Door Side Draft Shield.
When the balance determines that the Pan is empty,
the
Span Busy message appears. In a few seconds,
the Add Weight message appears, with the number
corresponding to the required weight.
Span
BUSY
Add the amount of weight indicated.
100
ADD WEIGHT
A Busy message will appear, together with a number
corresponding to the indicated weight.
100
BUSY
When the span calibration is completed, the Span
Clear Pan message appears.
Span
Clear Pan
When the balance determines the Pan is empty,
the
0 busy message appears.
---0---
BUSY
If calibration was successful, the Span Done message
appears.
Span
DONE
If calibration was unsuccessful, the Span Abort
message appears, and the menu returns to Service
Ramp . If Span calibration fails, refer to Chapter 3, and
check the InCal Weight Mechanism, and the Load Cell
assembly. Clean and/or repair as necessary.
Span
ABOrt
Discovery Balance Service Manual B-3 Ohaus Corporation www.ohaus.com