300 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Limas11 IR, Limas21 UV: Safety cell cleaning
Description of the safety cell
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 de-
tector).
The beam guide tubes are screwed into the sample cell and press the cell
window against the clamped 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 of < 1 x 10
−6
mbar l/s.
To Next Page
Loading...
