pHotoFlex
®
Turb
What to do if...
85
ba75976e07
09/2021
Obviously incor-
rect measured val-
ues
Sensor symbol
flashes
6.4
Turbidity
Error message
Measured values
obviously
incorrect
Measured value
display
< 0.01 FNU
Cause
Remedy
pH electrode:
– not connected
– Connect electrode
– Cable broken
– Exchange the cable or electrode
– pH electrode unsuitable
– Use suitable electrode
– Temperature difference
between buffer and test
sample too great
– Adjust temperature of buffer or
sample solutions
– Measurement procedure not
suitable
– Follow special procedure
Cause
Remedy
– Calibration interval expired
– Recalibrate the measuring system
Cause
Remedy
– Cell not correctly inserted
– Lock the cell into place
– Cell contaminated
– Clean the cell
– Calibration too old
– Carry out calibration
Cause
Remedy
– Measured value outside the
measuring range
– Not possible
