Orion Benchtop pH/ISE Meter Instruction Manual
Troubleshooting
71
Error
Code Problem Probable Remedy
E-22 Calibration The millivolts being measured are
Std Error the same for two different standards.
Check that two different standards
or buffers are being used and that
the correct one is being measured.
1. Make fresh standards or buffers
and repeat the last calibration
point or the entire calibration.
E-23 Bad Slope pH electrode slope not in the range
of 80% to 120%.
1. Press any key to acknowledge
and repeat calibration using
fresh buffers.
2. Clean electrode(s) and refill
reference electrode(s).
3. Refer to electrode instruction
manual for instructions on how
to check electrode operation.
E-26 Datalog Full The datalogger is full and cannot
store any more points. A maximum
of 25 points may be stored.
1. Transfer data to a printer
or computer.
2. Clear data from memory
. For Orion 710Aplus:
a. Go to 6-3 in the setup menu and
transfer data to the printer or
computer by pressing
then yes.
b. Go to 6-4 in the setup menu and
press then yes. Once the
data has been cleared additional
points may be logged.
c. For Orion 520Aplus, 525Aplus,
720Aplus, and 920Aplus: Press
2nd then options to access the
options menu. Follow the
prompts to transfer and clear the
datalogger.
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