Airway adapter for non-dispersive infrared gas analyzer
First Claim
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1. An airway adapter for a non-dispersive infrared gas analyzer comprising:
- a flow tube for passing gas therethrough;
aperture portions respectively formed by openings provided at opposite positions of a side wall of said flow tube and for passing an infrared ray therethrough, and a transparent film hermetically attached to said aperture portions, said transparent film including;
an anti-fogging layer disposed at an inner side of said flow tube;
a first film for forming an anti-fogging layer on the surface thereof; and
a second film layered on said first film and having transmittance characteristic for transmitting the infrared ray.
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Abstract
A transparent sheet 11 for transmitting an infrared ray therethrough is formed by laminating a PET sheet 5 on which a anti-fogging layer 4 can be formed easily and a PP sheet 12 with good infrared ray transmission property, thereby to make the thickness of the transparent window larger.
20 Citations
4 Claims
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1. An airway adapter for a non-dispersive infrared gas analyzer comprising:
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a flow tube for passing gas therethrough;
aperture portions respectively formed by openings provided at opposite positions of a side wall of said flow tube and for passing an infrared ray therethrough, and a transparent film hermetically attached to said aperture portions, said transparent film including;
an anti-fogging layer disposed at an inner side of said flow tube;
a first film for forming an anti-fogging layer on the surface thereof; and
a second film layered on said first film and having transmittance characteristic for transmitting the infrared ray. - View Dependent Claims (2, 3, 4)
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Specification
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Current AssigneeNihon Kohden Corporation
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Original AssigneeNihon Kohden Corporation
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InventorsYamamori, Shinji, Todokoro, Noriaki, Dainobu, Hidetoshi
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Primary Examiner(s)Winakur, Eric F.
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Assistant Examiner(s)Natnithithadha, Navin
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Application NumberUS09/397,118Time in Patent Office663 DaysField of Search600/529, 600/532, 600/538, 73/232, 73/233, 73/233.7, 250/343, 250/339.13, 356/437, 422/84US Class Current600/529CPC Class CodesA61B 5/0836 Measuring rate of CO2 produ...A61B 5/097 Devices for facilitating co...G01N 21/3504 for analysing gases, e.g. m...
