5.1
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14
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Optrode
Problem Cause Remedy
No signal. The mea-
sured value is con-
stant at approxi-
mately 0 mV.
The solution is too dark. ￭ Use less indicator.
￭ Dilute the solution.
The Optrode is dirty. Clean the sensor, particularly the smooth sur-
faces in the measuring gap (see Chapter 4.2,
page 12).
Signal is too high.
Constant measured
value at approxi-
mately 900 mV.
The solution is too bright. Use more indicator.
Too much ambient light
present (e.g. direct sun-
light).
Protect the measuring equipment from light.
Optrode is not rec-
ognized automati-
cally in tiamo (ver-
sion 2.5 and higher).
The Optrode firmware is
outdated.
Have the firmware updated by a service engi-
neer.
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