Download Service Manual Addendum

Anesthetic Agent Sensor
Theory Of Operation
Gas Inlet Gas Outlet
Infrared
Detector
Light
Source
Measurement
Chamber
Host
Interface
Filter Wheel &
Optical FIlters
Signal
Processor
FIGURE 1-12 Optical Path
No radiation is absorbed if the measurement chamber is empty. The output signal from the
detector is at maximum amplitude at a concentration of zero. Lower amplitudes indicate the
presence of gases in the measurement chamber.
To establish the zero reference, the AION™ Multigas Analyzer occasionally switches the zero
valve to direct ambient air through the measurement chamber.
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Gas Module Service Manual Addendum