Knauer K-2600 Handbuch Seite 6

6 General Description
General Description
The WellChrom K–2600 UV detector is a new, programmable and fast
scanning detector. It is capable of measuring up to four wavelengths
simultaneously. In stand alone mode two wavelengths can be used
simultaneously and four spectra can be stored in the detector. The scan
function provides you with spectral information of your substances over
the whole wavelength range without stopping the eluent flow of your
HPLC system.
Up to 20 time programs with 99 program lines can be stored and are
permanent available, up to nine links between programs can be
defined. The instrument is ideally suited for use as a stand alone
instrument as well as for use in a complete system under control of the
KNAUER HPLC software EuroChrom for Windows.
Wavelengths between 190 and 740 nm are selected using a moveable
grating monochromator with an accuracy of ± 1 nm in 1 nm steps. The
bandwidth is 8 nm or better. Additionally, a cut-off filter can be activated.
This filter suppresses secondary grating orders when measuring with a
deuterium lamp at wavelengths > 380 nm and thus ensures the
selectivity of the measurement. A halogen lamp for the visible
wavelength range can easily be installed by the user.
Data acquisition and control of the K–2600 UV detector are performed
digitally and such allow trouble free operation of the instrument. Two
adjustable analog outputs and the option for external analog control are
also available. Additional features offered by the K–2600 UV detector
are the control of other instruments via event outputs, the control of a
fraction collector by time window and/or level sensing and the possibility
to give out ratio plots, e.g. for peak purity control, via the analog
outputs.
An integrated self-test and self-calibration performed after switching on
ensures reliable and reproducible operation. The highly sensitive
–5
detector features a extremely low noise level (≤ 1 x 10 AU) and
–5
baseline drift (≤ 10 x 10 AU/h). The autozero function is available
across the entire measuring range. The K–2600 UV detector satisfies
all GLP requirements of a regulated laboratory.
A rich palette of flow cells available for the KNAUER photometers,
ranging from cells for Nano-HPLC with flow rates < 10 0 nl/min to
preparative cells for up to 10 l/min, make the photometer K–2600 highly
flexible in the full range of LC applications.
Moreover, a version of the K–2600 UV detector equipped with fiber
optical connectors of the cell is available. This enables the spatial
separation of detector and flow cell and thus the use of these
instruments in hazardous locations.