Troubleshooting – Ionode IJ pH V5.1 User Manual
Page 27
Ionode IJ Instruction Manual
27
4.6. Troubleshooting
A fault may develop in either the meter or
electrode. If a number of electrodes and/or
meters are available, interchange to isolate the
fault.
Table 4: Problem Indication
Symptom
Possible
Causes
Remedy
Drift
Junction
Blocked
Remove sleeve.
Clean glass stem
and sleeve. See
4.4.1
Cleaning
Membrane
not Clean
Remove sleeve.
Clean glass
membrane. See
4.4.1
Cleaning
Membrane
Aged or
Damaged
(e.g. by
Abrasion)
Allow longer
measuring time or
replace.
Electrode
Polarised
Replace electrode
Noisy
Bubble in
Membrane
Flick electrode
downward.
Poor
Connection to
Meter
Check connection
Junction not
Immersed
properly
Lower electrode into
solution below level
of junction (see
Figure 6
).
Insufficient
Electrolyte
See 3.
Preparation