GE AKTAprocess User Manual

Conductivity
The table below describes error symptoms that may occur with conductivity measure-
ments, together with possible corrective actions.
Corrective actionPossible causeError symptom
Tighten the clamps. If necessary, re-
place the clamps.
Leaking tube connectionsBaseline drift or noisy signal
See separate manualBad pump
Clean the conductivity cell, refer to
Clean the UV and conductivity cell, on
page 136
Dirty conductivity cell
Calibrate the conductivity cell, see
separate manual
Bad calibrationAbsolute conductivity value is
wrong
Recalibrate using a new calibration
solution
Calibration solution not cor-
rectly prepared
Check the pump and the valvesBad pump or valve actionIncorrect or unstable reading
Check the temperature compensation,
see separate manual
Temperature compensation
not properly set
pH curve
The table below describes error symptoms that may occur with pH measurements,
together with possible corrective actions.
Corrective actionPossible causeError symptom
Check the cable connectionThe cable to the electrode not
properly connected
No response to pH changes
Replace the electrodeThe electrode membrane
might be cracked
Clean the electrode, see manufactur-
ers's manual
The electrode membrane
might be contaminated
Small or slow response to pH
changes
Calibrate the pH sensor as described
in Section 6.5 Calibration of pH probe,
on page 148
pH sensor not properly cali-
brated
pH reading appears to be in-
correct
162 ÄKTAprocess Operating Instructions 29-0252-49 AA
7 Troubleshooting

GE AKTAprocess Specifications

General

Brand	GE
Model	AKTAprocess
Category	Laboratory Equipment
Language	English