INSTRUCTIONS FOR USING
THE ALCOHOL BREATH SIMULATOR
:
The Alcohol Breath Simulator
The Alcohol Breath Simulator shown on the previous page is a bottle with the jar portion filled with a
heated solution of water and alcohol that simulates the blood running through the arteries in the
lungs. The upper portion (the head space) is filled with a mixture of air and alcohol that simulates the
air in the lungs which is in contact with the blood across the cell membranes. Air flowing out of the
outlet pipe simulates the expired air of a person who has been drinking.
For the simulator to work properly it is necessary for the temperature of the water/alcohol solution to
be at 93
F (34
C) and for the mixture of alcohol and water to be accurate for the BrAC to be used in
the test (.01 BrAC). Setting up the simulator involves two operations, making up or obtaining the
correct alcohol/water solution and insuring that the simulator has heated the water solution and is
properly attached to the PAS Vr. mouthpiece. These procedures are described on the next page.
Preparing Simulator Tests
1. Remove the glass jar from the Simulator by unscrewing it from the Top
Assembly
.
2.
Place 500ml of the .01 BrAC solution into the Simulator.
2.
3.
Assemble the Simulator by tightly turning the jar back into the Top Assembly.
4.
4.
Add tubing to the inlet and outlet of the Simulator
.
5. Check the seal on the jar by blowing into the inlet while holding outlet closed.
There should be resistance to the airflow.
6. Plug the Simulator in and turn ON the power. Allow the solution to heat to 93°F
(34°C). This requires approximately 15 minutes. The heater lamp lights when
the heating element is heating. The lamp goes off when the Simulator fluid has
reached the proper temperature. However, it will come on to keep the fluid at
93°F (34°C).
7.
After the operating temperature of the Simulator (93°F) is reached, the Simulator
is ready to use. Attach the tube from the Simulator outlet to the PAS Vr.
mouthpiece. The Simulator is now ready for use in checking the sensitivity of
the PAS Vr.
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