LW Measurements MRB 2500 - Manual (Page 17)

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5.1.2 Clearing previous tare value
- Remove the weight from the platter then press the TARE key so that
the TARE indicator will turn off and the WEIGHT display returns to
Zero.
5.2 Weighing procedures
Whenever possible, before weighing, please allow the weighing machine to
warm up for at least 10 minutes after turning it on. This will help to ensure
optimal functioning and operation.

Press the ON/OFF key to turn on the weighing machine. The display
will show all segments for a few seconds and then the “0” will appear.

Press the UNIT key to select the desired weighing unit
– “kg”, “g”, “lb”,
“oz”, “lb:oz”.

To begin weighing, place the objects to be weighed in a weighing
container or directly on the platter.

The stable indicator will display when the reading becomes stable.
6 Calibration
Note:
Calibration is done in the factory. Don’t re-calibrate the machine unless
it is not accurate. The weighing machine should be allowed to warm up for at
least 10 minutes before calibration.

Before entering calibration mode, press the ON/OFF key to turn the
power on for 1 minute.

Next press the ON/OFF key again to turn the power off.

Press and hold the UNIT key and then press the ON/OFF key. The
display will show “CALu=”.

Press the UNIT key to select the calibration weight units ( g, lb, etc).
Press the ZERO key to select the calibration weight. The display will
show xxxxx. The X will be flashing. Press the UNIT key to move the
flashing digit to the right. Press the TARE key to increase the flashing
digit.