Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1985-01-29
1987-03-10
Richman, Barry S.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
128719, 250343, 436132, 436900, G01J 2135
Patent
active
046490272
ABSTRACT:
A battery-operated portable breath tester is disclosed. The breath tester includes a housing which defines a sleeve for receiving a wand. The wand defines an internal sample chamber, with a lamp at one end for providing infrared energy and a detector at an opposite end for receiving the infrared energy after it has passed through the sample to be tested. The wand defines opening extending from the internal sample chamber to the outside of the wand. The wand has an external shape providing a snug fit within the sleeve. As the wand is moved within the sleeve, gas is purged from the wand. The wand is connected to the housing by means of an electrical coil. The housing encloses a digital voltmeter including a digital display for providing a test readout. The digital voltmeter includes an oscillator which is coupled through a frequency divider and a transistor switch to the lamp. The lamp is switched on and off in accordance with the frequency output of the frequency divider to modulate the infrared energy emitted from the lamp at a selected frequency. A voltage regulator is connected to the lamp, and the lamp and voltage regulator are located in heat-exchange relationship with the sample chamber. This aids in raising the temperature of the sample chamber during testing in order to alleviate condensation.
REFERENCES:
patent: 3792272 (1974-02-01), Harte et al.
patent: 3860818 (1975-01-01), Stalder et al.
patent: 3861809 (1975-01-01), Hall
patent: 4008614 (1977-02-01), Turner et al.
patent: 4323777 (1982-04-01), Baskins et al.
Drager: Alcotest 7010, publication 1981.
CMI, Inc.
Gzybowski Michael S.
Pigott, Jr. Charles F.
Richman Barry S.
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