OHAUS EB3, Service Manual

Page: 28 / 52

3-14
CHAPTER 3 SCALE TESTING AND CALIBRATION
3.8 CALIBRATION
Calibration – The EB Series’ calibration can be calibrated using full scale capacity as the best method
for the most accurate results, this is referred to as span calibration.
Calibration Weights – Before beginning calibration, make sure that the required calibration weights are
available. The model-specific calibration points are listed in the Table 3-5.
3.8.1 Calibration Points
NOTES : 1. Calibration Units kg or lb are selected in the (Setup mode) sub-menu.
2. ASTM Class 4 or OIML Class F2 weights are required for calibration.
3.8.2 Span Calibration
1. Enter calibration by a long press of the ZERO and COUNT at the same time to initiate calibration.
2. The required calibration weight is displayed (ex. 3000g for a 3kg model). At this time, a different
calibration weight value can be entered by pressing .
3. Place the corresponding calibration weight on the Platform. the display flashes until the actual
weight is registered and the calibration process ends (the scale restarts) then remove the weight.
NOTE : 1. Different values of calibration masses can be used on the EB scale, however, it is recommended
that the calibration mass used is close to or matches the maximum capacity of the scale for
best accuracy.
2. The calibration procedure can be canceled at any time by turning the scale off.
3. If needed, the factory default calibration value can be recovered. As the scale is turned on, press
TARE and COUNT at the same time during power-on sequence. The power-on sequence will
re-cycle and the scale will re-initiate with the default calibration.
Model
Calibration Unit Span Calibration
EB3
EB6
EB15
EB30
kg
lb
Kg
lb
kg
lb
3 kg
6 lb
6 kg
15 lb
15 kg
30 lb
30 kg
60 lb
Kg
lb
TABLE 3-5. CALIBRATION POINTS.