Error Messages And Their Reasons; Other Problems And Possible Causes - Knauer Smartlibe UV Detector 2500 Handbuch

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Error messages and their reasons

Other problems and possible causes

Error message
Deuterium lamp Lamp defect
don't start
Halogen lamp installed
with lamp menu setting
Deuterium
ERROR Zero position can not be
zero position! found
Deuterium lamp installed
with lamp menu setting
Halogen
Intensity Light intensity to high,
overflow e.g. during exchanging
the flow cell
If only ERROR is displayed press any key to continue. If there occur
repeated problems starting the lamp or with calibrations please contact
our service department.
The message ERROR interrupts a running program of the UV-Detector
2500 as long as you have not pressed any key or an external start signal
executes the program newly. The message signal overflow do not
cause a program interruption.
Problem
Low signal- and
reference-values in
INTENSITY menu
Low signal value in
INTENSITY menu
‚Calibration' does not
disappear
Spikes in the
baseline
High drift
Wrong wavelength
with analog control
Error messages and their reasons
probable cause
possible causes
Old deuterium lamp
Dirty cell
Eluent absorption to
high
Not enough light
bubbles
Cell is leaking
Heavy temperature
changes
Wrong ANALOG IN
Offset
solution
Exchange lamp
Change the setting in
lamp menu
To perform a calibra-
tion switch the instru-
ment OFF and ON
Change the setting in
lamp menu
Push any key after
proper installing the
flow cell
solution
Replace lamp
clean cell
Change eluent,
change wavelength
Replace lamp
Use degasser,
Purge the cell at high
flow rate,
Check with dummy-
cell
Remove leak
Constant temperature
Set correct offset
(ANALOG IN Menü)