10
Autocalibration – To Calibrate the Balance to a Motorized Internal
Weight:
This procedure is only for balances with the suffix IW after the model number which means a motorized inter-
nal calibration weight is installed.
Note: Dual range models must be placed in HI range before starting the calibration procedure.
Note: For correct calibration weight refer to specification charts in the back of the manual.
Note: The balance should be warmed up for at least one (1) hour prior to calibration and leveled ac-
cording to the Unpacking and Setup section.
User Action Balance Response
1 Remove any containers or weighing samples so
that nothing is on the stainless steel pan. Then
press the ZERO button.
Zeros are displayed.
2 Press the FUNCTION button (or MODE and
RANGE buttons simultaneously for dual range
models).
Display cycles repeatedly through PCS, HI-OK-
LO, CAL1, CAL2, , and %.
3 Press the MODE button when CAL1 appears. CAL1 and a flashing 0 are displayed.
4 Wait 10 seconds. Then press the MODE button. The display shows a flashing CAL. This means
that the automatic calibration procedure using the
internal weight has begun. IntLOAd will appear in
the display. The procedure will take about 30 to 90
seconds. When the procedure is complete, the dis-
play will blank and then return to its normal
weighing mode. This means that your balance is
now calibrated. If the calibration cannot be com-
pleted due to air currents, an unstable environment
(vibration), an incorrect weight, or any other rea-
son; a brief “ERR” message will appear on the
display and the balance will return to Step 3.
Autocalibration – To Calibrate the Balance and its Motorized Internal
Calibration Weight to an External Weight:
This procedure is only for balances with the suffix IW after the model number, which means a motorized inter-
nal calibration weight is installed. This procedure first calibrates the balance to an external calibration weight
then recalibrates the internal calibration weight to the external weight. This procedure can also be used to only
calibrate the balance to the external weight without recalibrating the internal calibration weight.
Note: Dual range models must be placed in HI range before starting the calibration procedure.
Note: For correct calibration weight refer to specification charts in the back of the manual.
Note: The balance should be warmed up for at least one (1) hour prior to calibration and leveled ac-
cording to the Unpacking and Setup section.
Note: Perform autocalibration every time you move your balance.
Calibrate the balance using a recently certified external calibration weight. Metrology handbooks state that the
calibration weight utilized to calibrate a balance should have a tolerance no larger than the readability of the
balance divided by 3. Therefore, SA models need a ±0.033mg tolerance weight or better.
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