OHAUS DISCOVERY BALANCE, Руководство по обслуживанию

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APPENDIX A STANDARD CALIBRATION
A.4 Calibration Adjustment (Cal Adj)
Calibration Adjust may be used to adjust the result of the internal calibration by ± 100 counts.
Note: Before making a calibration adjustment, perform an internal calibration. To verify whether
an adjustment is needed, place a test mass on the Pan and note the difference (in counts)
between the nominal mass value and the actual reading. Refer to Table 1-1, Masses Used To
Test Discovery Balances, and use the highest value from the Span Calibration Points column as
the test mass.
If the difference is within ± XX count, calibration adjustment is not required. If the difference
exceeds ± XX count, calibration adjustment is recommended. [INFO TO COME…]
Following a calibration adjustment, repeat the internal calibration and verification procedures.
With the balance on, press and hold Cal Menu until Menu Calibrate is displayed with
CALIBRATE blinking, then release the button. Press Yes to enter calibration.
CAL AUTOCAL is displayed. Press No . CAL SPAN is displayed. Press No .
CAL TEST is displayed. Press No .
Press
Yes to enter the CAL ADJ sub-menu and view
the current setting.
There will be a number value with “d” in the sub-menu.
If the actual reading is less than the nominal mass
value, a positive adjustment is required.
Press No to increase the d value. Press it until the
setting matches the desired d value.
Press Back to decrease the d value until the setting
matches the desired d value.
Press
Yes to accept and store the setting.
TABLE A-1. CALIBRATION MASSES FOR DISCOVERY BALANCE MODELS
Model Span Calibration Points (1) Weight Class
DV114C 100g ASTM Class 1 OIML E1
DV214C 200g ASTM Class 1 OIML E1
DV314C 300g ASTM Class 1 OIML E1
DV215CD 200g ASTM Class 1 OIML E1
Discovery Balance Service Manual A-5 Ohaus Corporation www.ohaus.com