5. Taring
.. ·Place an empty container on center of the weighing pan .
.. ·C1ase aír shield doors (if air shield case attached)
.. 'Press the TARE key and allow zero to appeor on the display .
..·Place sample in the container and record a sample weight after "
* "has disappeared.
PRECAUTIONS
1.Do not disconnect the AC adapter cord when in use.
2. Always place a sample in the center of the weighing pan when making measurement. Slight errors
may result if the sample is not near the center of the weighing pan.
3. Place the balance in a controlled environment.
a. Protect the balance from drafts (air currents).
b. Maintain the ambient temperature to ±3 degree C.
c. Maintain the ambient humidity to ± 10%.
d .If greater changes occur in temperature or humidity, recalibrate the balance.
e. The balance table should be level and free from excessíve vibration (Iess than O.3m sec2).
f. Do not expose to direct sunlightor radiated heat (keep away from windows, heaters, hot plates,
flames, etc. l. Allow hot or cold sample or containers to come to ambient temperature before
weighing.
h. Discharge any statically charged sample before weighing.
i. Do not expose the balance to corrosive gases.
4. Magnetized samples cannot be weighed accurately on an electronic balance.
5. Calibration and test weights should have a greater accuracy than the linearity specification of the
balance. For instance, the specification for M}-3000 is lOmg. The weights used to test or calibrate
should be accurate to a minimumof ± 3mg.
6. Make certain the power supply source is free from electrical disturbance.
7. Clean the balance with damp c10th only (no solventsl .
8. Always warm-up the balance before use.
9. Always handle the balance with care during use when moving or storing.
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