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EN-12 EC Series
6. CALIBRATION
For best results, calibrate the scale at regular intervals. Temperature changes,
geographic gravity variations, altitude changes and abuse are few reasons why a
scale may need recalibration.
When the scale is ideally positioned for operation, enter calibration and proceed as
follows:
Long-press Zero to initiate calibra-
tion (do not release key-press until
“CAL” is displayed).
The required calibration weight is
displayed (ex. 3000g for a 3kg
model). At this time, a different
calibration weight value can be
entered via the numeric keypad.
Place the corresponding calibration
weight on the pan. The display
flashes until the actual weight is reg-
istered and the calibration process
ends (the scale momentarily beeps
before exiting to normal weighing
mode).
NOTE: Press Zero at any time to abort during the calibration process.
3000.0.
Weight g
0..
3000.03000.0
3000.03000.0
3000.0 .
Piece Weight g/pc
3000.0.
CAL
Count pcs
CAL
Required calibration
value
3000.0. 3000.0. CAL
ProcedureActual calibration
weight
3000.0. 0.. 0..
7. TROUBLESHOOTING
The following table lists common problems, possible causes and remedies. If the
problem persists, contact Ohaus or your authorized Ohaus dealer.
Symptom
Scale will not turn on.
Battery fails to charge fully.
Weight reading does
not stabilize.
Scale does not display
accurately.
E1, E2, E3 displayed
--OL-- displayed
Possible Causes
AC power not connected.
Battery discharged.
Battery is defective or past its
useful life.
Unstable environment.
Interference under pan.
Improper calibration.
The pan is placed incorrectly.
Zero limit exceeded during
power up.
Load exceeds scale capacity.
Remedy
Connect scale to power.
Connect scale to power and
charge battery.
Have the battery replaced by an
authorized Ohaus service dealer.
Ensure a stable environment.
Ensure that the weighing pan is
unobstructed and free to move.
Calibrate the scale using proper
calibration weights.
Reposition the pan correctly.
Ensure the pan is empty before
switching the scale on.
Reduce the load on the pan.
3 EC-textEN.pmd 8/9/2005, 1:41 PM12