And ВМ-22 [12/88] Cautions before use

And ВМ-500 [12/88] Cautions before use
10 BM series
3.2. Cautions Before Use (Environmental Condition And Preparations)
To ensure that you get the most from your balance, please try to
follow these conditions as closely as possible. Consider these
conditions for BM-20 and BM-22 that are sensitive instrument
specially.
The best operating temperature is about 20°C / 68°F at about
50% Relative Humidity.
The weighing room should be free of dust.
The weighing table should be solid and free from vibration,
drafts (such as frequently opening doors or windows) and as
level as possible. We recommend to use the anti-vibration table
(AD-1670) and remote controller (AD-8922A) for BM-20
and BM-22.
Corners of rooms are best as they are less prone to vibration.
Do not install the balance near a heater or air conditioner.
Do not install the balance in direct sunlight.
Do not use the balance near other equipment which produces
magnetic fields.
Adjust the level of the balance using the leveling feet.
Please warm-up the balance for at least one hour. Plug-in the AC
adapter as usual.
Calibrate the balance before using and after moving it to another
location.
Ensure a stable power source when using the AC adapter.
Do not place or use the balance where there is flammable or
corrosive gas present.
3.3. Cautions During Use (For Precision Weighing)
Note the following items to get accurate weighing data.
Discharge static electricity from the weighing material. When
weighing sample (plastics, insulator, etc.) could have a static
charge, the weight value is influenced. Ground the balance, and
Eliminate the static electricity using the built-in static eliminator.
Try to keep the ambient humidity at or above 45%RH in the room.
Use a metal shield case.
Wipe a charged material (plastic sample etc.) with a damp cloth.
This balance uses a strong magnet as part of the balance
assembly, so please use caution when weighing magnetic
materials. If there is a problem, use the underhook (on the
bottom of the balance) to suspend the material away from the
influence of the magnet.
Grounding
Metal case
Charged material
Magne
t
material

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