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Chapter 2 Preparations before use
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2-2. How to charge the battery (for the models with the rechargeable battery )
Turn the battery cover knob on the back side of the instrument, and then remove the battery cover.
Securely insert the plug of the AC adapter into the jack. Then the charging starts.
The instrument is not waterproof during charging.
Charge the battery at a temperature of 5°C to 35°C. Otherwise, charging may not be properly performed.
The battery sign blinks during charging. When charging is complete, the blinking stops.
2-3.
How to set and replace dry batteries (for the models with dry batteries)
Turn the battery cover knob on the back of the instrument, and then remove the battery cover.
Set the batteries in the correct directions according to the battery polarity (+, -) signs indicated inside the
battery box. If you set a battery in the wrong direction, the instrument may break down.
Close the battery cover, and securely close the battery cover knob.
Even when you need to replace one battery, replace both with new batteries.
Do not mix different types and brands of batteries (e.g. manganese battery and alkaline battery).
2-4.
Place of installation
Be sure to place the instrument on a level surface.
Otherwise, the measurement results will become inaccurate.
Placing the instrument on a wobbly surface also results in
inaccurate measurement.
[Note] Do not place the instrument on a slanted floor
(if the slant is too large to be adjusted).
On the underside of the instrument, there are leveling legs for
adjusting its levelness. Place the instrument on as flat a
surface as possible, and turn the leveling legs so that the
bubble in the spirit level is located at the center of the
reference circle. On adjustment, ensure that all the leveling
legs are in firm contact with the floor (the instrument goes
down when a leveling leg is turned clockwise, and it goes up
when a leg is turned counterclockwise).
+ -
- +
Open
Open
Reference circle
Air bubble
(Level)
(Front side is
low)
(Front side is
high)
(Right side is
high)