Carbon monoxide sensor

Details Carbon monoxide sensor Carbon monoxide sensor

1995-03-03

1997-03-04

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas of combustion

73 232, 73 3003, 73 3106, 422 83, 422 94, G01N 2712, G01M 1500, G08B 1710

Patent

active

056081545

ABSTRACT:
A carbon monoxide sensor (40) has a substrate arranged with other adjacent or overlaid layers attached thereon (41) defining a first space (43a) into which a unknown gas or gas mixture is introduced into and a second space (43b) communicating with the first space. A carbon monoxide adsorbent (61) is disposed in the second space, and an electrode (56) detects a partial pressure of oxygen in the carbon monoxide adsorbent. A pump cell includes the cell part (42), made of a solid electrolyte conducting oxygen ion, and a pair of electrodes (51, 52). The pump cell substantially removes oxygen from a gas in the first space (43a) while carbon monoxide in the gas is adsorbed onto the carbon monoxide adsorbent (61). Then, the pump cell introduces oxygen into the first space (43a), and a time is measured that the oxygen diffuses from the first space (43a) to the first detecting electrode (56) through the adsorbent (61). Only after an initial flow of the oxygen reacts with the carbon monoxide on the adsorbent (61), the oxygen reaches the first detecting electrode (56). Therefore, the time of transit across the adsorbent relates to an amount of the carbon monoxide in the gas. The carbon monoxide sensor is not affected by the concentration of oxygen in the gas, thereby improving accuracy in measuring the carbon monoxide concentration.

REFERENCES:
patent: 4277323 (1981-07-01), Muller et al.
patent: 4574627 (1986-03-01), Sakurai et al.
patent: 4718999 (1988-01-01), Suzuki et al.
patent: 4820386 (1989-04-01), Laconti et al.
patent: 4944273 (1990-07-01), Baresel et al.
patent: 5057436 (1991-10-01), Ball
patent: 5168068 (1992-12-01), Yanagisawa et al.
patent: 5252949 (1993-10-01), Kirby et al.
patent: 5265458 (1993-11-01), Usami et al.
patent: 5334350 (1994-08-01), Friese et al.
patent: 5397442 (1995-03-01), Wachsman
patent: 5476001 (1995-12-01), Hoetzel et al.
patent: 5493896 (1996-02-01), Riegel
Lukacs et al., Solid State Ionics 68(1994) 93-98, "Electrochemical investigations of a carbon monoxide-oxygen sensor."5
Kubovcik; Ronald J.

Affiliated with

Also associated with

Rating

Carbon monoxide sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Carbon monoxide sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon monoxide sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2147545