A&D Weighing BM-20 - Manual (Page 35)

BM series 33
8.4. Calibration Test Using the Internal Mass
This function tests the balance accuracy using the internal mass.
Calibration test does not perform calibration.
When 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 CC in is 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 internal mass.
Prevent vibration and drafts to affect the balance.
6 The value of the internal mass is displayed.
The normal range of the value is as follows:
Model The internal mass The normal range
BM-20, BM-22 20.00000 g ±0.02 mg
BM-252, BM-200
BM-300, BM-500
200.0000 g ±0.2 mg
7
If GLP output is set, glp is displayed, the calibration test
report is output to the RS-232C interface and is stored in
memory. Refer to "GLP output (
info )" and "Data memory
( data )" of the function table, " 11.2. GLP Report" and "12.
Data Memory".
end is displayed after the calibration.
9 The balance automatically returns to the weighing mode.
Press and hold
Release
GLP output