remove any items from the weighing platform and
press the
TARE
key again to re-zero the scale.
VII. Calibration
Calibration and adjustment are performed at the factory.
However, the weighing range can shift slightly during
shipping. Also, due to changes in local acceleration of gravity
around the world, adjustment is recommended when moving
the scale from one location to another. To check calibration:
1. Place the required calibration weight on the scale
and note the displayed value.
2. If the displayed value is not within acceptable
tolerance (see chart below), adjustment is required.
Model
Acceptable
Tolerance (±)
Calibration
Weight
Recommended
Accuracy Class
ZX-650
0.2g
500g
OIML M2
VIII. Adjustment
1. Press and hold the
MODE
key until the display
shows “CAL”.
2. Press the
MODE
key again. The display will flash
“CAL” followed by the calibration weight value (see
chart).
3. Place the calibration weight on the center of the
weighing platform. Make sure you are using the
correct weight for your specific model.
4. Once the weight is accepted, the display will show
“PASS” then return to normal operation.
