Troubleshooting 31
AZURA® Conductivity Monitor CM 2.1S Instructions, V6710
Has this been successful?
7.
Make sure that the IP port of the device matches the port in the
chromatog raphy software.
7.2 Possible problems and solutions
Problem
Solution
The desired conductivity
measuring value is not
reached
Flush the device according to chapter 8.3.
The system pressure is
increased
Flush the device according to chapter 8.3.
Conductivity values are
inaccurate
Are you working far above 100 mS /cm?
Carry out an adjustment with standards
at higher conductivity values (see chap.
5.6).
Is the instrument polluted? Flush the
CM flow cell according to chap. 8.3.
Has the room temperature changed?
Carry out a temperature correction.
The zero value (with
water) deviates strongly
Correct the zero value via the offset
value setting.
Flush the CM flow cell several times
according to chapter 8.3.
The value deviates
strongly from 86.6 mS/cm
with 1 M NaCl
Flush the device according to chapter
If there is no improvement: Repeat the
procedure.
In case of a deviation < +/- 12 %:
Carry out an adjustment according to
chap. 5.6.
Replace the CM flow cell if necessary.
The capillaries of the
CM flow cell are clogged
Flush the CM flow cell several times
according to chapter 8.3.
Replace the CM flow cell if necessary.
Noisy or unstable
readings
If necessary, remove air bubble on the
membrane of the pH flow cell.
Drift Solution temperatu-
re is changing
Allow all solutions to come to thermal
equilibrium.
Leakage around pH
probe
Tighten pH electrode nut.
Replace o-rings.
Leakage around fittings
Tighten fitting.
Replace fitting.
Conductivity
pH value
