JPS6360954U - - Google Patents
Info
- Publication number
- JPS6360954U JPS6360954U JP15470986U JP15470986U JPS6360954U JP S6360954 U JPS6360954 U JP S6360954U JP 15470986 U JP15470986 U JP 15470986U JP 15470986 U JP15470986 U JP 15470986U JP S6360954 U JPS6360954 U JP S6360954U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electrodes
- combustible gas
- electrode
- limiting current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000000354 decomposition reaction Methods 0.000 claims 2
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims 2
- 230000003197 catalytic effect Effects 0.000 claims 1
- 239000007772 electrode material Substances 0.000 claims 1
- 239000007784 solid electrolyte Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図は２段プラトー領域を有する本考案の原
理的プラトー特性線図、第２図は本考案が実施さ
れたジルコニア酸素センサの原理図、第３図は本
考案の一実施例の概略構成図、第４図は第３図の
演算回路機能説明図、第５図は第４図における出
力電流と可燃性ガス濃度との関係線図である。
２：電極、３：蓋、４：微小拡散孔、１０：演
算回路、１２：センサ部、１３：電子回路部、１
００：酸素センサ。
Fig. 1 is a principle plateau characteristic diagram of the present invention having a two-stage plateau region, Fig. 2 is a principle diagram of a zirconia oxygen sensor in which the present invention is implemented, and Fig. 3 is a schematic configuration of an embodiment of the present invention. 4 is a functional explanatory diagram of the arithmetic circuit shown in FIG. 3, and FIG. 5 is a diagram showing the relationship between the output current and the combustible gas concentration in FIG. 4. 2: Electrode, 3: Lid, 4: Micro diffusion hole, 10: Arithmetic circuit, 12: Sensor section, 13: Electronic circuit section, 1
00: Oxygen sensor.
Claims (1)
安定化ジルコニアと、この安定化ジルコニアの両
面に設けられた２個の電極と、前記電極のいずれ
か一方を覆い、かつ微小拡散孔が設けられた蓋と
を有し、前記電極に印加される電圧の所定の領域
で生じる限界電流が前記電極周辺の酸素濃度に比
例し、前記電極の高温と電極材料の触媒作用とに
より可燃性ガスを燃焼させる限界電流形酸素セン
サにおいて、前記限界電流が燃焼後の残存酸素に
のみ依存するような水の理論分解電圧より小さい
電圧を第１電圧とし、前記残存酸素と可燃性ガス
が燃焼することにより発生する水蒸気とに依存す
るような水の理論分解電圧より大きい電圧を第２
電圧として前記第１電圧と第２電圧とを交互に切
替えて前記電極間に印加し、前記第１および第２
電圧による前記電極からのそれぞれの入力を保持
し可燃性ガスを検出する演算回路を備えたことを
特徴とする可燃性ガス測定器。 Stabilized zirconia is a solid electrolyte with good oxygen ion conductivity, two electrodes are provided on both sides of the stabilized zirconia, and one of the electrodes is covered with a fine diffusion hole. a lid, the limiting current generated in a predetermined region of the voltage applied to the electrode is proportional to the oxygen concentration around the electrode, and the combustible gas is burned by the high temperature of the electrode and the catalytic action of the electrode material. In the limiting current type oxygen sensor, the first voltage is a voltage smaller than the theoretical decomposition voltage of water such that the limiting current depends only on the residual oxygen after combustion, and the voltage generated by the combustion of the residual oxygen and combustible gas is set as the first voltage. A voltage higher than the theoretical decomposition voltage of water, which depends on water vapor, is applied to the second
The first voltage and the second voltage are alternately switched and applied between the electrodes as a voltage, and the first voltage and the second voltage are applied between the electrodes.
A combustible gas measuring device characterized by comprising an arithmetic circuit that holds each voltage input from the electrodes and detects combustible gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15470986U JPS6360954U (en) | 1986-10-08 | 1986-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15470986U JPS6360954U (en) | 1986-10-08 | 1986-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6360954U true JPS6360954U (en) | 1988-04-22 |
Family
ID=31074752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15470986U Pending JPS6360954U (en) | 1986-10-08 | 1986-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6360954U (en) |
-
1986
- 1986-10-08 JP JP15470986U patent/JPS6360954U/ja active Pending
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