A&D Weighing BM-20 - Manual (Page 22)

20 BM series
6. Weighing
Precautions for the weighing operation
Press the RE-ZERO key each time, before placing a sample on the weighing pan, to prevent
possible errors.
Place a sample in the center of the weighing pan gently.
Temperature changes during measurement may cause weighing error.
Shorten the operation time as much as possible. (Opening and closing door, putting and removing sample)
Use a pair of tweezers to avoid a temperature change due to having your hand in the weighing
chamber.
Material with an electrostatic charge or that is magnetic may cause a weighing error.
Do not press keys with a sharp instrument (such as a pencil or ball point pen).
Do not drop things on the pan, or place a weight on the pan that is beyond the weighing range.
Calibrate your balance periodically to maintain weighing accuracy. Refer to section "8. Calibration".
Keep the area clean and dry.
Consider section "3. Precautions" for the weighing operation.
For precision weighing, keep the AC adapter connected to the balance.
6.1. Basic Operation
(Gram Mode)
Refer to section "4. Display symbols and Key operation" before operation.
Note When turning on the balance with a tare weight placed on
the pan, the balance automatically displays the zero display.
1 Turn on the balance using the
ON:OFF key.
2 Select a preset unit using the
MODE key, if necessary.
3 Place the tare (container) on the weighing pan, if necessary.
Press
the RE-ZERO key to cancel the tare weight.
Then zero is displayed.
Tare : A vessel placed on the pan, but not
to be included in the weighing data.
Example: Container.
4 Place a sample on the pan or in the container.
Close the door.
5 Wait for the stabilization indicator
to be
displayed, then read the value.
6 Remove the sample and container from the pan.
Tare
(Container)
Weighing pan
Stabilization
indicator
Stabilization
indicator
Glass door is
not closed
Close door
Remove them
Zero display
Press the key
to select a unit,
if necessary.
Information
Sample