Chapter 2 Hardware features
Page 2-8 MAN 0386
Air in connector
The compressed air line is connected to this. The compressed air is used to disperse
the sample. The input range is from 6-8 bar.
Caution!
The dispersion unit may be permanently damaged if the compressed air
line is not clean, dry and free from oil (see the Site Requirements for
details).
Vacuum monitor connector
The vacuum monitor connector is connected to the rear of the air cell and used to
detect whether the vacuum unit is working. This is a safety device - it ensures that
the sample will not be fed into the system until the vacuum unit is capable of safely
taking it away. Do not apply a pressure greater than +0.3 bar g to this input.
Air cell
Caution!
The air cell is an optical device. Treat it carefully as you would an expen-
sive camera. Scratches to the surfaces of the cell may affect performance.
The cell passes the sample through the analyser beam of the optical bench so that it
can be measured. The cell windows are part of the optical path of the system and
should be kept clean and free from scratches at all times. Refer to Chapter 4 for
details of cleaning/maintaining the cell.
The cell is encoded so the system detects and identifies it when it is loaded into the
optical bench. This diagram shows the features of the cell:
MAN0386-1.0 Scirocco 2000.book Page 8 Friday, March 16, 2007 4:15 PM
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