Gas sensors and methods of manufacturing the same

Details Gas sensors and methods of manufacturing the same Gas sensors and methods of manufacturing the same

1997-12-15

2000-07-11

Gellner, Michael L.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

338 35, H01C 700

Patent

active

060879246

ABSTRACT:
In a gas sensor which uses CuO as a p-type semiconductor, by adding Na.sub.2 CO.sub.3 in excess of 1 wt % relative to CuO, sensitivity to gases such as H.sub.2, NO, NO.sub.2 and SO.sub.2 is suppressed, whereby selectivity for CO is increased. Sensitivity to CO.sub.2 can also be obtained. In addition, by adding a sodium salt of tungstic acid or molybdic acid, CO.sub.2 sensitivity can be made lower than the CO sensitivity, and CO gas in the exhaust gases discharged from gas-fired water heaters or other combustion equipment can be selectively detected. It is therefore possible to detect incomplete combustion.

REFERENCES:
patent: 4313338 (1982-02-01), Abe et al.
patent: 4352286 (1982-10-01), Nakatani et al.
Dictionary of Physics and Chemistry, 4th Edition (see Appln. p. 4), p. 761.
English Translation of JP-06258270 published Sep. 16, 1994.

Affiliated with

Also associated with

Rating

Gas sensors and methods of manufacturing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas sensors and methods of manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas sensors and methods of manufacturing the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-546185