1-2. Cautions and instructions on use
• Causes of failure
(1) Do not push the display panel or operation keys with your fingernail or a pointed object.
(2) When you carry or move this instrument, be sure to hold the bottom of the instrument with both
hands.
(3) Do not apply any excessive impact or vibration.
(4) Do not drop anything on the instrument, jump on it, or drop it.
(5) Do not wipe the instrument using thinner, benzene, or other solvents.
(6) Do not disassemble or modify the instrument. Otherwise, you may get injured—for example, suffer
a wound on your hand from internal parts.
(7) Do not expose the instrument to water or install it in a humid place.
• Causes of inaccurate measurement
(1) Do not use the instrument near a heat source or steam, or in a place exposed to direct sunlight or
air-blow from an air conditioner.
(2) Do not use the instrument in a place exposed to excessive shock or vibration, or near any devices
that emit strong electromagnetic waves (e.g. microwave ovens).
(3) Use the instrument on a level, stable place which is rigid enough to sustain the load.
(4) Use the instrument in the specified operating conditions. (Operating conditions: –10°C to +40°C,
30% RH to 85% RH)
Note that, even in the specified operating range, measurement results may become inaccurate
under the following conditions where condensations occur.
1) When the instrument has been used or stored in a humid environment for a long time.
2) When the instrument has been exposed to sudden temperature change even if the humidity is
low (e.g. cold water has been splashed onto the instrument).
3) When the instrument has been used in an atmosphere exposed to cold air (from a refrigerator
etc.), steam, or water vapor.
(5) Do not spray alcohol or chemicals, such as sodium hypochlorite, directly over the load cell.
• Batteries
(1) Do not use an alkaline battery together with a manganese battery. If those batteries are used
together, the batteries may leak or rupture.
(2) Replace the batteries as soon as the dead battery sign appears. Replace all four batteries to new
ones at a time. A mixture of an old battery may cause a battery leak or significantly reduce the life of
the batteries.
(3) Upon replacement, set the batteries in place according to the specified polarities (+, -). Otherwise,
the instrument may break down.
(4) If you do not use the instrument for a long period (about 1 month or more), remove the batteries
from the instrument. Otherwise, a battery leak may occur, thus resulting in the corrosion inside the
instrument.
(5) When using the AC adaptor, be sure to remove the batteries from the instrument. Never use the AC
adaptor and batteries at the same time.
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