A&D Weighing FX-300i-PT - Manual (Page 28)

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11. TROUBLESHOOTING
z
Displayed values are unstable.
The AD-4212B-PT / AD-4212A-PT has a minimum weighing value of 0.01 mg / 0.1 mg and is
influenced by the measurement environment.
Measures to take
ß Use the accessory breeze break.
ß Referring to “3. PRECAUTIONS BEFORE USE”, check the measurement environment for
sources of drafts, vibration and static electricity.
ß The AD-4212B-PT with a minimum weighing value of 0.01 mg is prone to low-frequency vibration
such as shaking buildings. Particularly, earthquake, wind and changes in the barometric
pressure influence measurement. To avoid vibration, install the balance on the first floor, in the
corners of rooms (close to pillars or walls) far from a passage way.
ß Use the AD-1685 anti-vibration table.
ß Use the optional AD-1683 DC static eliminator or use the optional AD-1684 electrostatic field
meter if the cause of the unstable values may be due to static charges.
z Repeatability of the measurement values is low. The measurement values are not correct.
Measures to take
ß Referring to “3. PRECAUTIONS BEFORE USE”, check the measurement environment. Using
the accessory calibration weight, measure the balance repeatability and check the balance
performance.
ß Referring to “9-3 Example Causes of Measurement Errors”, check the measurement
environment for causes of errors.
z Balance error displays
Refer to the balance instruction manual.