Calibration - A&D GX-M Series Instruction Manual

9.Calibration

Since the balance's resolution is high, weighing values may change due to gravity and daily
environmental changes. It is necessary to perform calibration (sensitivity adjustment) with the
weight in order to keep the weighing values from changing even if gravity or the environment
changes.
It is recommended that you calibrate if the balance is installed for the first time or relocated, or
when the weighing values change significantly in daily inspection, etc.
Adjustment means to adjust the weighing value of the balance using the reference weight or
internal mass. Calibration is to weigh with the reference weight and compare how much the result
deviates from the reference value. (Adjustment is not performed in calibration.)
Calibration (Sensitivity adjustment)
Auto calibration ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ Automatically adjust the balance using the internal
Calibration using the internal mass ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ Using the internal mass, adjust the balance with a
Calibration using an external weight ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ Using an external mass, adjust the balance with an
Calibration test（ Sensitivity calibration ）
Calibration test with an external weight ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ Output the result of checking the accuracy of
Caution
□ Do not allow vibration or drafts to affect the balance during calibration.
□ To output the data for GLP/GMP using the RS-232C interface, set "GLP/GMP output (info)" of
"Data output (dout)". Refer to "11. Function Table". The time and date can be added to the
GLP/GMP report. If the time or date is not correct, adjust them. Refer to "11-7 Clock and Calendar
Function".
□ The calibration and calibration test data can be stored in memory. To store them, set "Data memory
(data)" .
Caution when using your external weight
□ The accuracy of the weight used in calibration affects the accuracy of the balance after calibration.
□ Select the mass to be used for calibration and calibration tests from the table below.
mass depending on the temperature change of the
operating environment or the set time and interval
time.（GX-M series）
single touch.
external mass.
weighing using your own weight.
* No adjustment is made.
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