Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1996-06-21
1999-07-13
Achutamurthy, Ponnathapura
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 94, 422 98, 338 34, 436152, G01N 3112, G01N 2716
Patent
active
059222875
ABSTRACT:
A combustible gas sensor having a pair of temperature sensor sections is here disclosed. One of the pair of temperature sensor sections is covered with porous oxidizing catalytic layers (23, 24) for oxidizing a combustible gas, and the other is not covered with the oxidizing catalyst layers. In the one temperature sensor section, the combustible gas is burned, and in the other temperature sensor section, the temperature of a gas to be measured is compensated. The temperature sensor sections each comprises temperature sensitive portions (13, 14) made of a dense ceramic material, resistors (21, 22) buried therein and having a positive resistance temperature coefficient, current leads (31, 32, 41, 42) and voltage leads (33, 34, 43, 44). A method for measuring the concentration of the combustible gas by the use of this combustible gas sensor is also disclosed. A method for detecting the deterioration of a catalyst which intends to eliminate the combustible gas, by the use of this combustible gas sensor is further disclosed. When a difference between temperatures of the pair of resistors or a difference between powers fed to the pair of resistors is in excess of a predetermined value, it is judged that the catalyst has been deteriorated.
REFERENCES:
patent: 5265417 (1993-11-01), Visser et al.
patent: 5549871 (1996-08-01), Kocache et al.
Ikoma Nobukazu
Kato Nobuhide
Miyashita Takeya
Nishikawa Satoshi
Achutamurthy Ponnathapura
NGK Insulators Ltd.
Ponnaluri P.
LandOfFree
Combustible gas sensor and method for detecting deterioration of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combustible gas sensor and method for detecting deterioration of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combustible gas sensor and method for detecting deterioration of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2273192