LW Measurements WPB 33 Water Proof Balance - Manual (Page 4)

WEIGHING
Before weighing
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Error messages
Err-O: Overload
: Low battery
Calibration may be required before weighing.
Read "CALIBRATION" first and if necessary, calibrate your scale/balance for
accurate weighing.
Weighing procedures
1. Press [ON/OFF] to turn on the scale/balance.
When power is turned on, all display segments appear on LCD for a few
seconds and then finally "0" will appear on the display.
2.
Select the weighing unit with [UNIT].
Press [UNIT] to select a weighing unit, eg. "kg"、"g" ……
Once the unit has been selected, the unit arrow will be displayed next to the
weight value.
3.Start weighing
If you do not use a container for weighing
Verify the reading is "0". If not, press [ZERO] to display "0".
Place objects on the weighing platform to weigh.
When the reading becomes stable, the stable indicator is displayed.
If you use a container for weighing
Place an empty container on the platform.
Wait for the stability indicator to be displayed and press [ZERO].
Place the objects to be weighed in the container.
When the reading becomes stable, the stable indicator is displayed.
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CALIBRATION
When to calibrate
Calibration may be required when it is initially installed, if the scale/balance is
moved to a substantial distance.
This is necessary because the weight of a mass in one location is not
necessarily the same in another location. Also, with time and use, mechanical
deviations may occur.
How to calibrate
Before entering calibration mode, There is a switch key on the bottom of the
scale. Turn on the switch key first, then press [ON/OFF] to turn the power on
for 1 minutes.
1. Press [ON/OFF] to turn the power off. Press [ZERO] first, then Press
[ON/OFF], while keep pressing [ZERO], the display will show CALU=, press
[UNIT] key to select full capacity unit kg, g,lb,oz. Press [ZERO] the display
will show XX.XXXX.
2. Press [UNIT] key to move the flash digit to right, press [PCS] key to increase
the flash digit. Ppress [ZERO] key to confirm the selection,.the display will
show "CAL" and then the A/D value ( the calibration weight should be more
than 2/3 of full capacity).
3. Press [UNIT], the display will show "-------" and then the calibration weight .
Place the calibration weight on platform. Press [UNIT] key , the display will
show "-------" and then the A/D value, Now calibration is finished. Remove the
weight from the platform.
4. Press [ON/OFF], turn off the power, press [ON/OFF] to turn on the power
again, place full weight on the platform to make sure whether weighing is
correct, if not, repeat steps 1-4.
5. Return to weighing mode
Press [ON/OFF] to turn the power off. Press [ON/OFF] again to turn on the
power and the scale/balance return to the weighing mode.
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