The Signal Menu; The Scan Menu - Knauer Smartlibe UV Detector 2500 Handbuch

Operating the UV-Detector 2500
Fig. 11

The SIGNAL menu

The SCAN menu

0.1 s 0.0000 au
♦ ON
SCAN 620-740
♦ go AZ speed:0 Hz
PROGRAM 000.00-190 nm
♦ go 000.00- * * * nm
INTENSITY signal:0.3836
♦ 1/8 reference:0.2264
EXTERNAL CONTROL
♦ keyboard
Menu sequence of UV-Detector 2500
0.1 s 0.0000 au
♦ ON
The SIGNAL or main menu contains the data signal intensity signal:,
wavelength λ:, time constant t: and the lamp status.
The current measured signal value is shown in a fixed point manner with
four digits. The measurement wavelength λ: can be selected within the
range from 190 to 740 nm in 1 nm steps.
Using the time constant t: you can achieve a signal smoothing. It's value
can be set to 0.1, 0.2, 0.5, 1, 2, 5 or 10 seconds. The larger this value is
set the more the signal will be smoothed. A time constant of 1 s fits most
of analytical purposes best.
If the instrument is controlled by chromatography software a time
constant of 0.1 s is suggested.
At last you can switch ON/OFF the lamp in this menu, indicated by ON
and OFF respectively.
SCAN 620-740
♦ go AZ
You can scan a spectrum in a stopped flow mode. There are four scan
speeds available (0, 1, 3, 6 Hz), the scan range can be set, an Autozero
can be performed before, and a cutoff filter can be activated (+filter) or
deactivated (-filter). How to run a scan will be described in
page 22.
254 nm
GLP
♦ lamp:01
+filter
ANALOG IN
♦
λ-RANGE
♦ λ?
LAMP
♦
ANALOG OUT
♦
254 nm
+filter
speed:0
13
S/N:00073379
00562.0h 011
set-zero
actual: 000 nm
190-740 nm
filter>380 nm
Deuterium
full scale:1e-0 au
SOP 4
on