LW Measurements MRB 2500 - Manual (Page 16)

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4.1.1 Selecting the auto backlight mode

Press the UNIT key, the display will show L_ON, L_OFF, or L_Au.
Press the ZERO key to select. L_ON means the auto backlight
function is active. L_OFF means the auto backlight function is
inactive, and L_Au means the auto backlight function is on Auto.
4.1.2 Selecting the auto shut off mode

Press the UNIT key again, the display will show A_ON or A_OFF.
Press the ZERO key to select. A_ON means the auto shut off function
is active. A_OFF means the auto shut off function is inactive.
4.1.3 Key Functions
- ON/OFF KEY is used to turn the Scale On or Off.
- ZERO KEY sets or re-adjusts the machine into the correct zero position.

Zero Range: 0-10% of full capacity
- TARE KEY subtracts the gross weight on the platter (box or container,
etc) to the tare weight.

Tare Range: 10-100% of full capacity. Multiple TARE allowed
within capacity.
- UNIT KEY is used to toggle between different weighing units.
5 Operation
5.1 Tare
5.1.1 Clearing tare weight
-
Place an empty container on the platter. Press the TARE key. The
WEIGHT display shows 0.000.
- When the container is removed from the platter, the WEIGHT display will
show a minus (-) value which is the weight of the container.