Title: Infrared optoacoustic gas analyzer having an improved gas inlet system

Abstract: The optoacoustic detector cell of an infrared laser optoacoustic spectrometer is interfaced to a source of gas under analysis, such as the atmosphere, by means of a relatively large area membrane separator. Gas to be analyzed is passed through the membrane separator, compressed by a compressor and then fed at a pressure of between 10 and 1000 torr into the optoacoustic detector cell of the infrared spectrometer for analysis therein. A method of tracing is disclosed wherein deuterium is incorporated into a system to be traced. The deuterium diffuses out of the body in extremely minute quantities which are then inducted into the optoacoustic detector cell of an infrared laser optoacoustic spectrometer via a palladium membrane separator and reactor, whereby an extremely sensitive detection or tracing system is obtained. Also a method of petroleum exploration is disclosed wherein trace quantities of hydrocarbon gases escaping from underground petroleum deposits are detected as a function of position over the area to be explored.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Aine, Harry E. (Mountain View, CA, US)

Application Number: 643179
Filing Date: 1975-12-22
Publication_date: 1977-09-27
Assignee:
Primary Class(es): 250/343 73/24.02, 96/9, 250/255, 356/51, 436/29, 436/178
Other Classes:
US Patent Ref:

2165214	Jul, 1939	Blau et al.	23/230.
3429105	Feb, 1969	Llewellyn et al.	55/158.
3734489	May, 1973	Milly	23/230.
3751880	Aug, 1973	Holm	55/158.
3811319	May, 1974	Arnold	55/158.
3862576	Jan, 1975	Pogorski	23/230.
3893771	Jul, 1975	Bell	250/345.
3911276	Oct, 1975	Bell	250/343.
3926561	Dec, 1975	Lucero	55/158.

Other Refs:
Primary Examiner: Smith, Alfred E.
Assistant Examiner: Grigsby, T. N.
Attorney: Lowhurst & Aine