The Λ-Range / Filter Menu; The Analog In Menu; The Glp Menu; Installation Of The Flow Cell - Knauer Smartlibe UV Detector 2500 Handbuch

Operating the UV-Detector 2500
The λ-RANGE / filter menu

The ANALOG IN menu

The GLP menu

Installation of the Flow Cell

The setting shall only be changed, if really a change of the lamp
type was carried out. If the setting and the installed lamp type are
not identical, the instrument will not work properly.
λ-RANGE 190-740 nm
♦ λ? filter>380 nm
The wavelength range can be limited in a standard setting. Then only
values inside this range are free for selection. Above 380 nm an edge
filter can be added to increase the selectivity. However in this case a
decrease of the sensitivity has to be taken into account.
The filter is not allowed to be used if a tungsten halogen lamp is
installed and also at wavelengths below 380 nm.
An execution of the λ? function calibrates the zero point of the
wavelength scale. It must be carried out in case the error message
ERROR ZERO POSITION appears.
ANALOG IN
♦ actual: 000 nm
The ANALOG IN menu is used to calibrate the analog input for automatic
adjusting the monochromator. Activating the Set-Zero entry function
interprets a voltage signal at the input as 000 nm. If then a signal of for
instance 5 V is applied to the input, the actual field will show 500 nm as
recognized wavelength value, considering a setting of 1 V = 100 nm. To
produce a second calibration point the displayed wavelength can be
changed pressing the ▼ or ▲ keys.
GLP S/N:00073379
♦ lamp:01 00562.0h 011
The GLP menu contains the following information: serial number, total
number of lamps used, total operating hours of the current lamp and
number of lamp starts.
Pressing the ► or ◄ keys you access the lamp counter. Pressing now
one of the ▲ or ▼ keys, the lamp counter will be incremented in both
cases by 1. At the same time the ignition counter as well as the operating
time counter will be set to zero!
This entry is irreversible! Make certain, that this function is used
only after the lamp was really exchanged.
The UV-Detector 2500 comes factory configured without a flow cell. The
device is equipped with a "dummy" test cell which does not have any
optical parts and is for testing the instrument only. Before operating the
detector it is necessary to install an appropriate KNAUER flow cell.
The available flow cells can be found on page 35.
set-zero
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