Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1988-08-19
1991-10-08
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 85, 422 87, 436169, G01N 2125
Patent
active
050552678
ABSTRACT:
A thin film environmental monitor for monitoring a person's exposure to an analyte in an environment, comprising a portable casing for housing the monitor, a pump in the casing for obtaining an air sample, and a sensor in the casing for sensing the concentration of the analyte in the air sample obtained by the pump. The sensor includes an active film portion coated with a dry coating adapted to cause a chemical reaction with the analyte, and a reference film portion for transmitting incident light independently of the concentration of analyte in the air sample. The sensor generates an active signal representing the amount of light transmitted by the active film portion and a reference signal representing the amount of light transmitted by the reference film portion. A control circuit is provided in the casing for providing voltage to the sensor and for processing the active and reference signals from the sensor and producing an output signal representative of the concentration of the analyte in the air sample. Indicators are provided connected to the casing responsive to the control circuit for indicating the amount of analyte sensed based on the representative output signal.
REFERENCES:
patent: 3114610 (1963-12-01), Gafford et al.
patent: 3399273 (1968-09-01), Grosskopf
patent: 3725658 (1973-04-01), Stanley et al.
patent: 3853477 (1974-12-01), Block et al.
patent: 4023930 (1977-05-01), Blunck et al.
patent: 4125372 (1978-11-01), Kawai et al.
patent: 4348358 (1982-09-01), McKee et al.
patent: 4513087 (1985-04-01), Giuliani et al.
patent: 4554133 (1985-11-01), Leichnitz
patent: 4661320 (1987-04-01), Ito et al.
patent: 4849172 (1989-07-01), Yafuso et al.
Burroughs G. Edward
Huebener David J.
Kummert Lynn M.
The United States of America as represented by the Secretary of
Warden Robert J.
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