AVL DiGas 4000 User Manual

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Opacity Measuring Chamber Type A AVL 4000

6-4 Service Manual

6.3 General Configuration

The opacity measuring chamber basically consists of the following main components:

− Detector (Selenium Board)

− Lamp module

− Half-shell 1

− Half-shell 2

− Cover 1

− Cover 2

− Changeover valve with geared motor

− 2 fans

− Heating blocks (2 in measuring chamber)

− Orifice plates (in measuring chamber)

− 3 gaskets

− Ports for connection cables to evaluation unit (control cable and heating cable)

− Sample gas inlet

− Sample gas and purging air outlet

− Rubber pads

− Rating plate

− Probe holder (passenger car)

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