Error Messages And What To Do - Lovibond TB 350 Guide De Démarrage Rapide

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6 Troubleshooting
6 Troubleshooting

6.1 Error messages and what to do

Symptom
Overrange
EN
Under range
Instrument does not
turn on
"Save" button for a
function does not
appear, so a log
cannot be created.
Instrument will not
take a measurement
Low battery
notification
Instrument settings
cannot be accessed
by user
Calibration Error
20
Possible Cause
The turbidity of the sample is
beyond the measuring range
of the instrument.
The turbidity of the sample is
below the detection limit of
the instrument
Batteries are defective
Batteries are not inserted
correctly
Required information is
missing
Lid is not closed
Battery is below 20%
Instrument security protocol
is in place
Sample vials were not
cleaned prior to calibration
Solution
• Dilute the sample
• Verify calibration using a
high-range standard.
• Repeat the stray light
measurement (zero
adjustment) as instructed
ensuring the sample lid is
closed.
• Repeat the calibration
after the stray light was
determined.
• Replace batteries with a
complete new set.
Ensure that the user initials
and all other required fields
are properly addressed.
Close the lid.
Replace or recharge batteries
Enter the password to unlock
settings and calibration
functions
• Re-wash sample vials
using the procedure in
the manual. Store vials as
prescribed in the manual.
• Check expiration date of
standard
EN   TB 350

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