Detector settings – Metrohm IC Net 2.3 User Manual
Page 271
6.28 844 UV/VIS Compact IC
IC Net 2.3
261
Detector settings
On the tab
Detector settings
measuring settings are defined.
Detector settings
Settings for UV/VIS detector.
VIS lamp
Display of the voltage of the VIS lamp.
T int, ms
Integration
time.
Entry range:
10
...
254 ms
T out, s
Measuring time per data point.
Entry range:
0.05
...
2.00 s
Data rate
Effective measuring time per data point.
The
Data rate
is the particular whole number
multiple of the value
T int
that is closest to
the value
T out
.
The
measurement
of a data point is explained by using an
example
:
Set values
:
T int
= 15 ms,
T out
= 0.1 s
The
calculated
Data rate
is 105 ms (the particular multiple of
T
int
that is closest to the value
T out
; in our example 7 times 15
ms). This means that the integration will be carried out 7 times
(each time for 15 ms) and then averaged to give a data point.
<Optimize>
Optimizes
T int
and adjusts the VIS lamp.
It should be done
•
after exchanging a lamp (UV or VIS)
•
if parts of the intensity spectrum are in the
overload ( > 60'000 , peaks cut )
•
if the maximum of the intensity spectrum of
dist. water is too low (below 33'000)
Before clicking
<Optimize>
, the flow-trough
cell should be rinsed and filled with dist.
water. There must be no air bubbles in the
flow-trough cell when clicking
<Optimize>
.