Carbon dioxide gas detection element

• US 5,322,612 A
• Filed: 08/13/1992
• Issued: 06/21/1994
• Est. Priority Date: 08/14/1991
• Status: Expired due to Fees

• Current Assignee: Ymatake-Honeywell Co., Ltd.
• Original Assignee: Yamatake-Honeywell Company Limited
• Inventors: Sadaoka, Yoshihiko, Abe, Tooru, Kuroiwa, Takaaki
• Primary Examiner(s): Niebling, John
• Assistant Examiner(s): Bell, Bruce F.
• Application Number:
  US07/930,148
• Time in Patent Office: 677 Days
• Field of Search: 204/419, 204/421, 204/424, 204/425, 204/426, 204/427, 204/428, 204/429, 204/153.18, 204/153.12, 204/416, 501/153, 501/32
• US Class Current: 204/421
• CPC Class Codes: G01N 27/4074 for detection of gases other than oxygen
• CPC Class Codes: G01N 33/004 CO or CO2

Abstract

A carbon dioxide gas detection element includes a solid electrolyte of a sodium ion conductor made of a ceramic/glass composite material.

Claims

1. A carbon dioxide gas detection element comprising a solid electrolyte of a sodium ion conductor made of a composite material of a ceramic and glass materials, said glass material comprising Na₂ O-A1₂ O₃ -4SiO₂.

2. An element according to claim 1, wherein the glass material has the same carrier ions as those of the ceramic material.

3. An element according to claim 1, wherein a weight ratio of the glass material with respect to the ceramic material is set to be not more than 50 wt%.