Chapter 6 Customer Services; Meter Error Codes - Thermo Scientific Orion Star A111 Reference Manual

Chapter 6 Customer Services

Meter Error Codes

Display Reason
No buffer found
during automatic
buffer calibration
The same buffer
is calibrated
twice
Calibration
slope error
Memory is full
Thermo Scientific Orion Star A111 Benchtop and Star A121 Portable pH Meters
Solution
The buffer is not recognized or a recognized value for the automatic buffer calibration. Verify that
the buffers you are using are the fresh and recognized values (see Appendix for the listing). Remove
the electrode (and ATC probe if separate) from the solution, rinse and press
buffer standards or press
The millivolts measured during calibration are the same for two buffers.
Review the calibration procedure and verify that the electrode was placed in the correct buffers at
the appropriate time. Clean the electrode according to the electrode user guide. Re-calibrate the
electrode with fresh buffers.
Clean the electrode according to the electrode user guide. Re-calibrate the electrode with
new buffers.
The meter will automatically change to the submenu to clear the datalog ("CLR" on the top line,
"NO" on the second).
If the existing memory's data is still needed:
1. Press to return to the measurement mode and
2. In measurement mode, press
3. Press . Press
4. Press to save the change and delete the data accordingly.
If the existing memory's data can be deleted:
1. Press change to "YES".
2. Press to clear the datalog.
to escape without saving and return to the measurement mode.
and then 4 times. ("5.0" appears on the top line.)
to delete the last reading or press
to re-scan for the
. Record the memory's data.
to delete all readings.
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