Metrohm 944 Professional UV/VIS Detector Vario - Manual (Page 29)

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4 Start-up
944 Professional UV/VIS Detector Vario (2.944.0010)
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4 Start-up
The 944 Professional UV/VIS Detector Vario is put into operation together
with the IC instrument.
The following preconditions must be met before initial start-up:
￭ The 944 Professional UV/VIS Detector Vario is installed as outlined in
this manual and connected to the ion chromatograph.
You can find additional information on carrying out initial start-up in the
Start-up chapter in the manual for the IC instrument and the MagIC Net
online help.
We recommend checking the intensity spectrum of the lamps in addition
to performing the initial start-up with the IC system.
Checking the intensity spectrum
Before you can check the intensity of the lamps, the following precondi-
tions must be met:
￭ The lenses and the flow path of the flow-through cell must be clean.
1 Rinsing the flow-through cell with ultrapure water
Rinse the flow-through cell with ultrapure water at a flow rate of
0.5 mL/min.
Ensure that no air bubbles remain in the flow-through cell.
2 Checking the intensity of the lamps
In MagIC Net, adjust the following settings:
￭ Go to the Manual program part.
￭ Click on the icon for the 944 UV/VIS Detector.
￭ On the UV lamp tab, switch on the UV Lamp.
￭ On the VIS lamp tab, switch on the VIS lamp.
￭ On the Detector tab, select the Intensity spectrum.
First click on [Reset baseline] and then click on [View].
The lamp's intensity range is monitored and the spectrum is
recorded.
If the intensity spectrum looks similar to the spectrum in Figure 7, then the
lamp is correctly adjusted.