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pH 1100 L
Error message
OFL, UFL
Error message,
ba77068d05
05/2021
7
What to do if...
Cause
pH electrode:
– Measured value outside the
measuring range
– Air bubble in front of the junc-
tion
– Air in the junction
– Cable broken
– Gel electrolyte dried out
Cause
Error
pH electrode:
– The values determined for
zero point and slope of the
electrode are outside the
allowed limits.
– Junction contaminated
– Electrode broken
Buffer solutions:
– Incorrect buffer solutions
– Buffer solutions too old
– Buffer solutions depleted
What to do if...
Remedy
– Use suitable electrode
– Remove air bubble
– Extract air or moisten junc-
tion
– Replace the electrode
– Replace the electrode
Remedy
– Recalibrate
– Clean the junction
– Replace the electrode
– Change calibration proce-
dure
– Use only once.
Note the shelf life
– Change solutions
61
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