Thermo Scientific Orion 2117HL User Manual page 93

Troubleshooting
High Slope
Thermo Scientific Orion 2117HL High Level Chloride Analyzer User Guide
Slope greater than -62 mV/decade
• Improper calibration technique – refer to Chapter IV, Performing a
DKA Calibration.
• Calibration standards contaminated – repeat the calibration using
fresh standards.
• Electronics failure – reset the analyzer. Refer to Chapter VI, Resetting
the Analyzer.
• Improper pipet technique – refer to the Appendix, Pipet Operation
and Technique section.
• Background concentration too high for the standards used.
• Cables interchanged – verify wiring of cable connections to terminal
strip. Refer to Chapter II, Wiring the Analyzer.
• Check the connection of the cable markers for the corresponding
electrode. Cable markers are the white tape at the cap connector on
the cable.
• "Ref " for the reference electrode
• "Sensing" for the chloride electrode
• Sensing electrode coated – clean or replace the sensing electrode.
VI-10