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* Only available with refillable electrodes.
ELECTRODE CONDITIONING
ELECTRODE CONDITIONING
ELECTRODE CONDITIONING
ELECTRODE CONDITIONING
ELECTRODE CONDITIONING
AND MAINTENANCE
AND MAINTENANCE
AND MAINTENANCE
AND MAINTENANCE
AND MAINTENANCE
PREPARATION
Remove the protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT.
This is normal with electrodes and they will disappear when rinsed
with water.
During transport tiny bubbles of air may have formed inside the glass
bulb. The electrode cannot function properly under these conditions.
These bubbles can be removed by "shaking down" the electrode as
you would do with a glass thermometer.
SYMPTOMS
PROBLEM
SOLUTION
For HI 8424 only
Display shows "E5"
For HI 9622 only
Display shows "pH----"
Display shows "°C"
blinking
Display shows "mV----"
Display shows "Er-7"
Display shows "Er-4"
Display shows "Er-10"
Ec
Eb
Er
Erroneous buffer so-
lution used for slope
calibration
An out of order pH
electrode
Out of range- pH
scale
No temperature
probe attached
Out of range- mV
scale
Erroneous pH 7 buffer
solution used for off-
set calibration
An out of order pH
electrode
Erroneous pH 4 buffer
solution used for
slope calibration
An out of order pH
electrode
Erroneous pH 10
buffer solution used
for slope calibration
An out of order pH
electrode
Wrong buffer
Unfit electrode
Low battery
Over-Range
Dry electrode
Use fresh buffer solution
Replace the electrode
a) Check the calibration
b) Ensure that the pH value
is between 0 and 14
c) Check the level of electrolyte
and the state of the electrode
itself
Make sure the temperature
probe is attached properly
Make sure the mV value is
within ±1999
Use fresh pH 7 buffer solution
Replace the electrode
Use fresh pH 4 buffer solution
Replace the electrode
Use fresh pH 10 buffer solu-
tion
Replace the electrode
Change the buffer solution.
Clean, condition and if neces-
sary change the electrode.
Replace the battery.
Repeat conditioning.
For HI 9214 & HI 931000 only
