Gas Flow Theory of Operation
1 - 22 046-001141-00 A5/A3™ Service Manual
After passing through the pneumatic resistance (59), O2 and N2O enter the electronic flow sensor
(26). Air enters the electronic flow sensor (26) after passing through the needle valve (58) and the
electronic flow meter monitors, and displays the gas flow.
FIGURE 1-9 Flow Sensor Tubing
The converged gas goes from the total flow meter (50) to the anesthetic agent delivery device
(vaporizer), forming fresh gas after mixed with the anesthetic agent. The fresh gas then goes from the
check valve (28) through the CGO (29) assembly to the breathing system. The flushing O2 also enters
the breathing system through the CGO (29) assembly.
FIGURE 1-10 Outlet/Inlet of Anesthetic Agent Delivery Device
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