LW Measurements HRB 303 300g x 0.001g - Manual (Page 10)

FEATURES
 Auto zero tracking

Low battery indication
 Large bright backlit LCD
 Large stainless steel pan

Stability indication
 Auto calibration
 Selectable auto back light

Selectable beeper
 Unit switching: g, oz, lb, dwt ... ...
 1.3 million internal resolution

200,000 display resolution
 24 bit A/D processor
 Less than 1s display setting time
 Highest quality sensor used
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3.6 Leveling the weighing machine
To function properly, the balance must be precisely horizontal. The balance is
fitted with one bubble level. and adjustable feet for level-control, with the aid of
which it is possible to compensate for small height differences and / or any
unevenness in the surface on which the balance is positioned.
The screw feet must be adjusted so that the air bubble is precisely in the center
of the sight glass of the bubble level (see Fig. 1)
Place the scale horizontally and keep the bubble inside the bubble level aligned
with the red circle (See Fig.1). In order to get exact measurements, the balance
must again be carefully leveled after each relocation.
Fig. 1 Correct leveling with the aid of the bubble level
3.7 Calibration of the weighing machine
Since the Earth’s gravity is not the same everywhere, each balance must be
adjusted to compensate for the gravity differences at each location in
accordance with the underlying physical weighing principles. This adjustment
process, known as calibration and must be carried out on initial installation and
after each subsequent relocation.
In order to ensure exact measurements, it is recommended that the balance
should be calibrated regularly using a known external calibration weight (see
Section 5 below).
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Figure 2.2 Details of your weighing machine
Weighing pan
Battery
compartment cover
Bright
back-lit display
Battery
compartment
(batteries not
included)
Bubble level
Mains power connection
Leveling feet
RS232 connection