The Program Menu; The Intensity Menu; The External Control Menu; The Analog Out Menu - Knauer Smartlibe UV Detector 2500 Handbuch

14

The PROGRAM menu

The INTENSITY menu

The EXTERNAL CONTROL menu

The ANALOG OUT menu

The LAMP menu

PROGRAM 000.00-190 nm
♦ go 000.00- * * * nm
The Prog menu serves to enter a time based program for changing the
wavelength's. The way how a program is entered and executed will be
described in the section Entering a Program on page 20. Including start
and end line a program can consists of maximum 11 lines.
INTENSITY signal:0.3836
♦ 1/8 reference:0.2264
The values signal and reference show the light intensities of the signal
and reference channel respectively. The signal and reference values are
in the range between 0 and 1. They depend on the selected wavelength,
the solvent in use, the flow cell as well as on the age of the lamp. The
ratio of both values should be between 1:1.5 and 1:1.8 (not for detectors
with fiber optics). Significant deviations are an indicator for instance for a
dirty lens or a to strong absorption of the solvent at the selected
wavelength.
The value behind the rhombus in the second line (for example 1/8) is a
measure for the integration time and it is only of interest in case of
servicing.
EXTERNAL CONTROL
♦ keyboard
This menu enables you to select the control mode: either from other
instruments (external control = analog) or in a stand-alone mode
(external control = keyboard).
If the detector is controlled by chromatography software (via RS-232)
external control is also set to keyboard.
ANALOG OUT
♦ full scale:1e-0 au
The ANALOG OUT menu is used for calibration of the analog output
signals. Generally the maximum output signal is 1 V. In accordance with
your current conditions you can determine how many AU correspond to
this maximum signal or full scale deflection. The values of 1e-4, 2e-4, 5e-
4, 1e-3, 2e-3, 5e-3, 1e-2, 2e-2, 5e-2, 1e-1, 2e-1, 5e-1, 1e-0, 2e-0, 5e-0 or
1e+1 AU (corresponding to 0.0001, 0.0002, 0.0005, 0.001, 0.002, 0.005,
0.01, 0.02, 0.05, 0.1, 0.2, 0.5 1, 2, 5 and 10 AU respectively) are
selectable.
LAMP
♦ Deuterium
This menu is for entering the type of lamp used to adapt the software.
The options Deuterium and Halogen are possible.
Operating the UV-Detector 2500