JPH0445964U - - Google Patents
Info
- Publication number
- JPH0445964U JPH0445964U JP8724590U JP8724590U JPH0445964U JP H0445964 U JPH0445964 U JP H0445964U JP 8724590 U JP8724590 U JP 8724590U JP 8724590 U JP8724590 U JP 8724590U JP H0445964 U JPH0445964 U JP H0445964U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electrode
- solid electrolyte
- gas
- water vapor
- 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.)
- Granted
Links
- 239000007784 solid electrolyte Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 3
- 239000001301 oxygen Substances 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図〜第４図は本考案の第１実施例を示す。
第１図は湿度センサの原理説明図、第２図はその
要部断面図、第３図はそのセンサの印加電圧と電
流との関係を示すグラフ、第４図は電流値比と水
蒸気圧のグラフである。第５図〜第７図は本考案
の作用効果を説明するための、印加電圧と電流と
の関係を示すグラフである。第８図、第９図は本
考案の第２、第３実施例における湿度センサの断
面図である。
図中、１……安定化ジルコニア板（固体電解質
）、２……カソード（第１電極）、３……アノー
ド（第２電極）、４……ガス供給制限手段、５…
…電圧印加手段、６……演算器、２１，３１……
端面。
1 to 4 show a first embodiment of the present invention.
Figure 1 is a diagram explaining the principle of a humidity sensor, Figure 2 is a sectional view of its main parts, Figure 3 is a graph showing the relationship between the applied voltage and current of the sensor, and Figure 4 is a graph showing the relationship between the current value ratio and water vapor pressure. It is a graph. 5 to 7 are graphs showing the relationship between applied voltage and current for explaining the effects of the present invention. 8 and 9 are cross-sectional views of humidity sensors in second and third embodiments of the present invention. In the figure, 1... stabilized zirconia plate (solid electrolyte), 2... cathode (first electrode), 3... anode (second electrode), 4... gas supply limiting means, 5...
...Voltage application means, 6... Arithmetic unit, 21, 31...
End face.
Claims (1)
第１電極および第２電極と、 前記第１電極に対し、水蒸気および酸素を含む
被測定ガスの拡散を制限するガス供給制限手段と
、 水の電気分解が始まる分解開始電圧未満の第１
電圧と、分解開始電圧以上の第２電圧とを交互に
上記電極間に印加する電圧印加手段と、 上記第１電圧印加時に流れる第１限界電流値と
、上記第２電圧印加時に流れる第２限界電流値と
の比を求め、該比に基づいて被測定ガス中に含ま
れる水蒸気の割合を演算する演算器と を備えてなる湿度センサ。[Claims for Utility Model Registration] A solid electrolyte having good oxygen ion conductivity, and a solid electrolyte disposed with each end face in close contact with the solid electrolyte,
a first electrode and a second electrode; a gas supply limiting means for limiting the diffusion of a gas to be measured containing water vapor and oxygen to the first electrode;
Voltage applying means for alternately applying a voltage and a second voltage equal to or higher than the decomposition start voltage between the electrodes, a first limit current value that flows when the first voltage is applied, and a second limit current that flows when the second voltage is applied. A humidity sensor comprising: a calculator that calculates a ratio with a current value and calculates a proportion of water vapor contained in a gas to be measured based on the ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724590U JPH079085Y2 (en) | 1990-08-20 | 1990-08-20 | Humidity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8724590U JPH079085Y2 (en) | 1990-08-20 | 1990-08-20 | Humidity sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0445964U true JPH0445964U (en) | 1992-04-20 |
| JPH079085Y2 JPH079085Y2 (en) | 1995-03-06 |
Family
ID=31819438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8724590U Expired - Fee Related JPH079085Y2 (en) | 1990-08-20 | 1990-08-20 | Humidity sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079085Y2 (en) |
-
1990
- 1990-08-20 JP JP8724590U patent/JPH079085Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079085Y2 (en) | 1995-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |