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8. CALIBRATION
Calibration
Calibration using the calibration weight
Calibration test
To check the weighing accuracy, using the calibration weight, and output the result.
(Calibration test does not perform calibration.)
Caution
Calibration adjusts the balance for accurate weighing.
Besides periodic calibration and before each use, perform calibration when:
• the balance is installed for the first time.
• the balance has been moved.
• the ambient conditions have changed.
Do not allow vibration or drafts to affect the balance during calibration.
To output the data for GLP using the RS-232C interface, set “GLP output ( info )” of “Data
output ( dout )”. For details, refer to “10. FUNCTION TABLE”. Time and date are added to the
GLP report. If the time or date is not correct, adjust them. For details, refer to “10-9 Clock and
Calendar Function”.
Calibration test is available only when “GLP output ( info )” of “Data output ( dout )” is set to
“1” or “2”,
The calibration and calibration test data can be stored in memory. To store them, set “Data
memory ( data )” to “3”. For details, refer to “14. DATA MEMORY”.
Caution on using an external calibration weight
The accuracy of the weight can influence the accuracy of weighing. Select an appropriate
weight as listed below. A calibration weight (conforming to OIML, Class E2 or equivalent) is
provided with the balance as a standard accessory.
Model Usable calibration weight Adjustable range
Calibration
weight provided
AD-4212A-100 20 g,
50 g
, 100 g -15.0 mg to +15.9 mg 50 g
AD-4212A-200 20 g, 50 g,
100 g
, 200 g 100 g
AD-4212A-600 20 g, 50 g, 100 g,
200 g
, 300 g, 400 g
500 g, 600 g
AD-4212A-1000 20 g, 50 g, 100 g,
200 g
, 300 g, 400 g
500 g, 600 g, 700 g, 800 g, 900 g, 1000 g
-15 mg to +15 mg
200 g
AD-4212B-101
AD-4212B-102
10 g, 20 g,
50 g
, 100 g -15.00 mg to +15.99 mg 50 g
AD-4212B-201 10 g, 20 g, 50 g,
100 g
, 200 g
AD-4212B-301 10 g, 20 g, 50 g,
100 g
, 200 g, 300 g
-15.0 mg to +15.9 mg 100 g
The calibration weight in bold type: factory setting
The calibration weight value can be adjusted within the range above.
Display
This indicator means “the balance is measuring calibration
data”. Do not allow vibration or drafts to affect the balance
while this indicator is displayed.