EUTECH INSTRUMENTS CON 700 - REV 2 Manual de instrucciones Pagina 26

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Calibration error.
Buffer value does not
match displayed value or
electrode is disconnected
or failing.
Use fresh buffer solutions.
Check electrode connection.
Clean & recondition electrode.
Replace electrode.
Broken or worn electrode Replace electrode Unstable pH
reading
External ‘noises’ or
induction (electrical ‘noise’
caused by a nearby motor)
Remove or switch off interfering
device
Slow
response
Dirty electrode. Clean & rehydrate the electrode
CAL
during pH
CAL mode
Calibration was attempted
using only 1-point that was
not pH 7 (USA) or pH 6.86
(NIST).
Recalibrate using 2 or more pH
points or use pH 7 (USA)
or use pH 6.86 (NIST).
21
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