#CMI INTOXILYZER 300 MANUAL SERIES#

The CEM is a heated flushing accessory for the Alco-Sensor IV that allows the operator to flush the instrument with warm air to drive off residual alcohol in cold weather operations.

A Cell Enhancement Module (CEM) was used in some of the tests. In the evidential mode, the evidential/screening version will not allow the operator to begin an evidential test until an air blank test indicates that the instrument is clear of residual alcohol. The screening version allows the operator to begin a test at any time.

#CMI INTOXILYZER 300 MANUAL SERIES#

A series of tests was performed on two versions of the Alco-Sensor IV: a screening version and an evidential/screening version. The Alco-Sensor IV is designed to automatically capture a small portion of deep lung air as the breath passes through the instrument and deliver it to the fuel-cell sensor for measurement. The Alco-Sensor IV, a widely used hand held breath tester that is unheated and has no flushing pump was used to investigate the possibility of carry over. (In order to extend battery life, many hand held breath testers are unheated.) Carry over is not possible if sufficient time is allowed for condensed alcohol to evaporate, if the breath tester is heated and flushed prior to the second test, or if an air blank test is made prior to the breath test to check for the presence of residual alcohol. It has been pointed out to NHTSA that if this condensation occurs, it is possible for alcohol in one test to carry over to a second test, which would cause a false positive result. If the ambient air is cold enough, and if the hand held breath tester is unheated, it is possible for the moisture in the breath to condense onto the airway surface of the tester, and cause alcohol present to condense with it. As it exits the mouth, the breath is saturated with moisture. Roadside testing at low temperature presents a potential problem not seen with testing done in the protected environments of law enforcement stations or mobile vans. Roadside breath testing by law enforcement using hand-held breath testers is becoming more important in detecting the drinking driver. Alco-Sensor IV at 10вЊ - DOT HS 809 424 - March 2002 Department of Transportation - NHTSA - Special Testing for Possible Alcohol Carry Over Effects Using the Intoximeters, Inc.

Cmi intoxilyzer 300 manual