6 Maintenance and Troubleshooting
6.2 Troubleshooting
ES-51
81
●
ERR No.03 Electrode stability error
Explanation
The electric potential did not stabilize within three
minutes.
Cause
How to solve problem
This is caused by
the sample
solution (when
the sample
solution is pure
water or another
solution with low
conductivity or the
pH concentration
or temperature
change).
Press the MEAS key again while
“HOLD” is either brinking or steadily
lit in the display, to measure the
sample using instantaneous value
measurement.
The electrode is
dirty.
Wash the electrode.
The electrode is
cracked.
Replace the electrode.
The responsive
glass membrane
of the electrode
has been dry for a
long time.
Soak the membrane (on the
electrode) in pure (de-ionized)
water for 24 hours.
The temperature
of the sample
solution is
fluctuating.
Measure after the sample solution
temperature stabilizes.
