A&D A & D Analytical Balance GH-120/GH-200/GH-300/GH-202/GH-252 - Manual (Page 28)

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8.5.
Calibration Using an External Weight
This function calibrates the balance using an external weight.
1 Connect the AC adapter and warm up the balance for at
least one hour with nothing on the weighing pan.
2 Press and hold the
CAL key until Calout is
displayed, then release the key.
3 The balance displays
Cal 0 .
If you want to change the calibration mass, press
the RANGE key and proceed to step 4.
If you use the calibration mass value stored in the
balance, proceed to step 5.
4 Specify the calibration mass value as follows:
RANGE key........ The key to switch blinking figures.
RE-ZERO (+)key ... The keys to select the calibration mass or
adjust the mass value. Refer to page 23.
PRINT key.......... The key to store the new mass value. Even
if the AC adapter is removed, the data is
maintained in non-volatile memory.
CAL key............. The key to cancel the operation and return
to Cal 0 .
5 Confirm that there is nothing on the pan and press the
PRINT key. The balance measures the zero point.
Do not allow vibration or drafts to affect the balance.
The balance displays the calibration mass value.
6 Place the displayed calibration weight on the pan and press
the PRINT key. The balance measures the calibration
mass. Do not allow vibration or drafts to affect the balance.
7 The balance displays
end . Remove the weight from the pan.
8 If the "GLP output (
info )" the function table is set, the
balance displays glp and outputs or stores "Calibration
Report". Refer to "11.2. GLP Report" for details.
9 The balance will automatically return to the weighing mode.
10 Place the calibration weight on the pan and confirm that the
value displayed is correct. If it is not within the range, check
the ambient conditions such as breeze and vibration also
check the weighing pan. Then, repeat steps 1 to 10.
Release
Select
Example:
New weight
100.0012 g
Place weight
Remove
GLP output
Press
and
hold
Specify
MODE (-)key