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Troubleshooting
Check the instrument
Out of measuring range
No response
Is the sample
flowing
smoothly?
YES
Is it too high or
too low sample
temperature?
NO
Is the wiring to the
transmitter
disconnected?
NO
Is the KCI tank filled
with solution?
YES
Does it respond to
pH7, pH9 or pH4?
YES
Contact us
Fluctuation of reading
Give adequate flow rate without bubbling.
NO
Reduce sampling flow rate so that the liquid
impedance becomes low.
YES
Keep the sample temperature within the mea-
suring condition.
YES
Confirm the electrode wirings to the transmitter
and repair the defect.
NO
Replenish the tank if empty.
Is the pH electrode cracking?
Replace a pH electrode.
NO
Is the insulation of pH tip failed?
Replace or clean the pH tip.
Is junction clogging?
Replace the junction or KCI solution.
Troubleshooting
Drift of reading
11
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