Conductivity
Problems with conductivity can be caused by:
Solution
Problem
Make sure the conductivity sensor's connector cable is
properly connected to the system cabinet (see
).
Poor connection.
Check that the wash liquid is connected to inlet 6 and the
test liquid to inlet 5.
Wrong inlets used.
Make sure that the liquids used are fresh and correctly
prepared (see
Wrong composition of
wash liquid and/or test
solution.
Conductivity is temperature compensated and thus de-
pendent on correct temperature readings. The tempera-
ture window is located on the back of the flow meter cell
(see
Mount the main part tubing, on page 91
). Possible
problems with temperature measurement are:
Errors in temperature
readings.
•
Loose flow meter cell. Check that the flow meter cell
is properly snapped onto its mounting knobs (see
Mount the main part tubing, on page 91
). A gap be-
tween the temperature window and the sensor may
cause incorrect measurements.
•
Dirty or damp temperature window. Wipe clean with
soft tissue.
•
System temperature not stable with respect to sur-
roundings. If room temperature changes or if the
system is moved from one room to another, it must
be given time to adjust to current room temperature.
•
Make sure the temperature of the process liquid not
differs more than 10°C from ambient temperature.
ÄKTA ready Operating Instructions 28960345 AD
119
8 Component test
8.3 Troubleshooting a failed component test
