A&D A & D Analytical Balance GH-120/GH-200/GH-300/GH-202/GH-252 - Manual (Page 27)

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8.4.
Calibration Test Using the Internal Mass
This function tests the balance accuracy using the internal mass. (Balance is not calibrated)
When the GLP output is set, the calibration test report is output or stored.
1 Connect the AC adapter and warm up the
balance at least one hour.
2 Press and hold the
CAL key until is CC in
displayed, then release the key.
3 The balance measures the zero point.
Prevent vibration and drafts to affect the balance.
4 The measured zero point data is displayed.
5 The balance measures the full scale data.
Prevent vibration and drafts to affect the balance.
7 The full scale data is displayed. The tolerance
of the full scale data is ±0.2mg.
Model Full scale data
GH-120 100.000 g
GH-200, GH-300,
GH-202, GH-252
200.000 g
8 When the GLP output is set, the calibration
test report is output or stored.
Refer to "GLP output ( info )" and "Data
memory ( data )" of the function table.
The zero point data and full scale data is
displayed (or output) in unit of 0.0001g.
8 The balance automatically returns to the weighing mode.
Press and hold
Release
GLP output