Thermo Orion Star - Conductivity Events;Errors; DO Events;Errors

XIII-5
Orion Star Series Meter
Thermo Electron Corporation
Care and Maintenance
Conductivity Events/Errors
Error
Code
Description
Press
to Clear
Cause Trouble Shooting
705 Conductivity
Auto-Standard
Failure
Yes Auto-standard
not recognized,
will only happen
in remote control
• Check that electrode is in correct
standard.
• Recalibrate using fresh standards
• Check that the appropriate cell constant
is entered in the method setup.
• Clean electrode
• Replatinize conductivity cell (if
applicable)
707 Conductivity
Calibration
Standard Error
Yes The conductance
being measured
is the same for
two different
standards.
• Check that the two different standards
are being used and that the electrode is
in the correct standard.
• Make fresh standards and repeat the
calibration.
709 Conductivity
Cell Constant
Yes The cell constant
is not in the
range of 0.001 to
199.0
• Repeat calibration using fresh
standards
• Clean electrodes
• Replatinize conductivity cell (if
applicable
DO Events/Errors
Error
Code
Description
Press
to Clear
Cause Trouble Shooting
809 Bad DO Slope Yes The DO slope is
not in the range
of 3.92 to 19.7
nano-amps /
%saturation
• Repeat calibration
• On Air calibration make sure sponge in
calibration sleeve is damp.
• On water calibration make sure water
is saturated with air by bubbling but
stirred to prevent keep bubbles off the
membrane surface.
• Polish the cathode and replace the
membrane cap and fill solution.