Calibration; Calibration Group - A&D GP-61KS Instruction Manual

7-1 Calibration Group

The GP series balance has the following modes as a calibration group.

Calibration

Calibration test
Correction of the internal mass value
Terms
The following terms are defined as follows:
Internal mass
External weight
Calibration weight =
Target weight
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 environment has 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 "9. 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 "9-9 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 "11. DATA MEMORY".
Caution on using an external weight
The accuracy of an external weight will influence the accuracy of weighing. Select an
appropriate weight as listed below:
Model
GP-12K
GP-20K
GP-30K/GP-30KS
GP-32K/ GP-32KS
GP-40K
GP-60K/ GP-60KS
GP-61K/ GP-61KS
GP-100K/GP-100KS
GP-102K
The calibration weight in bold type: factory setting
The calibration weight value can be adjusted within the range above.
7. CALIBRATION
Automatic self calibration (calibration due to changes in temperature)
Calibration using the internal mass (one-touch calibration)
Calibration using an external weight
Calibration test using an external weight (Calibration test does not
perform calibration.)
= Built-in calibration weight
= A weight that you have. Referred to as a calibration weight when used for calibration.
A weight used for calibration
= An external weight used for calibration test
Usable calibration weight
5 kg, 10 kg
10 kg, 20 kg
20 kg, 30 kg
20 kg, 30 kg
20 kg, 30 kg, 40 kg
30 kg, 40 kg, 50 kg, 60 kg
30 kg, 40 kg, 50 kg, 60 kg
60 kg, 80 kg, 100 kg
60 kg, 80 kg, 100 kg
25
Adjustable range
-1.5 g to +1.5 g
-15 g to +15 g
-1.5 g to +1.5 g
-15 g to +15 g