A&D A & D Analytical Balance GH-120/GH-200/GH-300/GH-202/GH-252 - Manual (Page 30)

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8.7.
Correcting the Internal Mass Value
The balance can correct the internal mass value within the range shown below. This function
corrects the internal mass value to conform to an external weight. The corrected mass value
is maintained in non-volatile memory even if the AC adapter is removed. The internal mass
value is corrected as follows:
Model Target Range
GH-120 100.000 g
GH-200
GH-300
GH-202
GH-252
200.000 g
±1.5 mg
1 Calibrate the balance using the internal mass. (one-touch calibration)
Example: 200.0000 g is corrected to +0.6 mg (200.0006 g). When correcting a 100 g
external weight by +0.6 mg, the weight changed into 200 g, the correction value is +1.2 mg.
2 Press
the ON:OFF key to turn off the display.
3 While pressing and holding the
PRINT key and the RANGE key,
press the ON:OFF key. The balance displays p5 .
4 Press the
PRINT key. Then the balance displays the function
switches. Set the function table switch and internal mass correction
switch to "
1 " as shown above using the following keys.
RANGE key........ The key to select blinking figure.
RE-ZERO key..... The key to change the value of the blinking figure..
PRINT key ......... The key to store it and return to weighing mode.
CAL key............. The key to cancel current operation.
5 Press and hold the
RANGE key to enter the function
table and release the key when ba5fnc is displayed.
6 Press
the RANGE key several times until C5 in is displayed,
then release the key.
7
Press PRINT key. Correct the internal mass value using the
following keys.
RE-ZERO (+)key .. The key to select the value.
MODE (-)key........ The key to select the value.
PRINT key ......... The key to store the new value and display the
next menu item of the function table.
CAL key............. The key to cancel this correction and display
the next menu item of the function table.
8 Press
the CAL key to return the weighing mode.
9 Press
the CAL key to calibrate the balance using the internal mass.
10 Check the correction that has been performed properly with the
external weight. If the value is incorrect, repeat the correction.
Correct the internal
mass by +0.6mg.
Calibrate with this
internal mass.
The same mass
200.0000 g 200.0006g
Corrected external weight
200g 200g
Function table switch
Correction switch of internal mass
Press and hold
Press and hold Press
Weighing mode