TR-I serial wireless crane scale user’s manual
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SECTION 6 OPERATION
NOTE: In order to save energy of the battery to work for longer time, please turn off
the power switch in the crane scale only if you do not use the scale. When the battery
uses up, please charge it immediately.
Method: Open the crane scale, you will find a power switch beside the battery. Please
turn on/off it when you want/do not want to use the scale. When you want charge the
battery, please insert the adaptor into the charge hole on the crane scale.
6.1 Zeroing the Display
You can press the ZERO key at any time to set the zero point from which all other
weighing and counting is measured, within 10% of power up zero. This will usually
only be necessary when the platform is empty. When the zero point is obtained the
display will show the indicator for zero.
The scale has an automatic rezeroing function to account for minor drifting or
accumulation of material on the platform. However you may need to press the ZERO
key to rezero the scale if small amounts of weight are shown when the platform is
empty.
6.2 Taring
Zero the scale by pressing the ZERO key if necessary. The zero indicator will be on.
Place a container on the platform, a value for its weight will be displayed.
Press the ZERO key to tare the scale (only when the weight is large than 10%
capacity). The weight that was displayed is stored as the tare value and that value is
subtracted from the display, leaving zero on the display. The "TARE" indicator will be
on. As product is added only the weight of the product will be shown. The scale could
be tared a second time if another type of product was to be added to the first one.
Again only the weight that is added after taring will be displayed.
When the container is removed a negative value will be shown. If the scale was tared
just before removing the container this value is the gross weight of the container plus
all product that was removed. The zero indicator will also be on because the platform
is back to the same condition it was when the ZERO key was last pressed.
NOTE: When the weight is less than 10% capacity, this key function is zero, When
the weight is large than 10% capacity, this key function is tare.
6.3 Weighing a sample
To determine the weight of a sample first tare the empty container then place the
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