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AL400T-WL_2a 07/2011
3.5 Trouble-shooting
3.5.1 Operating messages in the display / error display
Display
All icons that can appear on the display are shown in the
picture. The display is used for reporting the turbidity levels
and to provide user guidance in the calibration routine. In
addition, the display also has other icons that are used to
indicate when the instrument is in calibration mode & to
indicate error conditions and battery warnings.
System Warning Messages
Automatic warning messages are generated to provide
specific diagnostic information about the instrument. These
messages are for the operator’s use and do not indicate a
reduction in the performance of the instrument or a failure
of any component in the instrument.
Battery Low Indicator
There are two battery warning levels. A flashing battery
icon on the display indicates that the batteries need to be
replaced, but the readings are still accurate. This is a warning
that the batteries are low.
A steady battery icon on the display indicates that power
level is too low and the readings may be out of specification.
Under this condition, the batteries should be replaced as
soon as possible to ensure that the instrument will continue
to function properly. If the batteries get too low for opera-
tion, the instrument will turn off & the instrument may not
turn on until the batteries have been replaced. See chapter
2.1.2. Replacement of batteries.
System Error Messages
If an error is identified the instrument will turn on the error icon (ERR).
Error
Trouble shooting
ERR
Icon on
Internal Error – contact your local distributor
ERR
Icon on
Display reads
CAL
Bad standards or standards in wrong order
(see chapter 2.3.2.3)
0.0.0.0
NTU
FNU
CAL
ERR
0.24
NTU
FNU
0.24
NTU
FNU
Содержание AL400T-WL
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