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Limas11: Safety Cell Cleaning
Description of the
Safety Cell
Fig. 9-9
Safety Cell
in the Limas11
Analyzer Module
Fig. 9-10
Safety Cell
42/24-10 EN Rev. 9
The safety cell comprises three components:
• Sample cell of stainless steel 1.4571,
• Beam guide tube 1 of brass (on the side pointing to the beam splitter),
• Beam guide tube 2 of brass (on the side pointing to the measuring detector).
The beam guide tubes are screwed into the sample cell and press the cell windows
against the chambered 22.1x1.6 FFKM70 O-ring seals. In this manner, the sample
gas side of the cell is sealed so that it is gas-tight. One 28x2-FKM80 O-ring seal is
located on the periphery of each of the beam guide tubes. The purge gas chamber
is sealed so that it is gas-tight to the outside by means of this seal.
The tightness of the sample cell has been tested in the factory for a leakage rate
–6
of < 1 x 10
mbar l/s.
1
2
3 4
2
3
4
1 Couplings of the
Purge Gas Lines
2 Plugs
3 Retaining Board
Chapter 9: Inspection and Maintenance
5
6
7
10
7
4 Screw
5 Screws
6 Mounting Bracket
7 Purge Gas Hose
8
9
6
5
9
8 Fixing Device
9 Sample Cell
10 Beam Guide Tube
11 Beam Guide Tube
Continued on next page
11
9-15
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