Care, maintenance, lamp change
SPECORD
®
Changing lamps
2. Loosen the two clamping screws (2).
3. Pull the defective halogen lamp (5) out of its holder (3).
4. Remove the new halogen lamp from its packaging, but keep the protective sheath
attached.
5. Insert the new halogen lamp taking care to ensure that the notch at its base
encloses the pin in the bottom part of the holder.
6. Reattach the protective cover of the halogen lamp and refasten it.
Fine alignment of halogen lamp
Check the alignment of the halogen lamp.
1. For this purpose, switch the SPECORD
®
on and initialize it. To this end, start
WinASPECT
®
and activate the following menu command:
Measurement / Initialize
Device
.
2. Exit WinASPECT® to run the Service Check routine and activate the Service Check
routine as follows:
Click on the
[Start]
button of the Windows taskbar. In the Programs folder, click on
the
WinASPECT
folder. There, click on the
Service xxx
command. This will bring
up the
SPECORD xxx - Service Check
dialog box.
3. Click on the
[Zeroth Order]
button and choose the halogen lamp (
HL – Lamp
).
4. View the image of the sample beam in the sample compartment by holding a white
sheet of paper in the plane where normally the cell is placed.
There, a 7 – 8 mm high and 1 – 2 mm wide light spot should be visible that is evenly
illuminated from top to bottom.
5. If you find that the light spot on the sheet of paper is badly uneven, verify that the
halogen lamp is correctly seated.
6. Perform wavelength correction and check the zeroth order and automatic
adjustment of gain stages.
7. If you are not satisfied with the alignment of the halogen lamp, loosen the fastening
screws (Fig. 8-1, 3) and move the lamp sensitively while running an energy
measurement as described above for the fine alignment of the deuterium lamp on
the SPECORD
®
200/205/210. For that, the ideal wavelength is 500 nm.
Note
Please note that the halogen lamp needs a warm-up of about one hour after switch on
to reach full thermal stability.
Page 38
SPECORD
®
200/205/210/250 User's Manual – Edition 04/2005
Analytik Jena AG
