A&D A & D Analytical Balance GH-120/GH-200/GH-300/GH-202/GH-252 - Manual (Page 18)

16
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 of the balance.
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)
Read section "4. Display symbols and Key operation" before operation.
Note When turning on the balance with a container placed on the
pan, the tare function sets the display to zero automatically.
1 Turn on the balance using the ON:OFF key.
2 Select a preset unit (g or mg) using the MODE key.
3 Place the container on the weighing pan, if necessary.
Press the RE-ZERO key to cancel the weight (tare).
Then zero is displayed.
Container : A vessel placed on the pan, but not to be
included in the weighing data.
4 Place a sample on the pan or in the container.
5 Wait for the stabilization indicator to be displayed,
then read the value.
6 Remove the sample and container from the pan.
Stabilization
indicator
Sample
Container
Weighing pan
Remove them