JPS6438645A - Method for measuring concentration of gas - Google Patents
Method for measuring concentration of gasInfo
- Publication number
- JPS6438645A JPS6438645A JP62194724A JP19472487A JPS6438645A JP S6438645 A JPS6438645 A JP S6438645A JP 62194724 A JP62194724 A JP 62194724A JP 19472487 A JP19472487 A JP 19472487A JP S6438645 A JPS6438645 A JP S6438645A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- oxygen
- gas
- measure
- measured
- 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
Abstract
PURPOSE:To periodically measure the concns. of oxygen and hydrogen in gas to be measured, by periodically applying the first and second voltages by one limit current type oxygen sensor using a solid electrolyte. CONSTITUTION:At first, the first voltage (low voltage) V1 is applied to an oxygen sensor and a stable time stabilizing the operation of the sensor is secured as a prescribed time to measure the limit current value IL1 of the first flat part of a voltage-current characteristics curve. This current value IL1 is stored in a memory and, at the same time, desired operation is performed to calculate the concn. of oxygen and the calculation result is outputted to a display to be displayed thereon. Next, the second voltage (high voltage) V2 is applied after the elapse of a predetermined time to measure the limit current value IL2 of the second flat part of the voltage-current characteristic curve. The difference DELTAIL=IL2-IL1 between the output currents is calculated and the concn. of moisture (humidity) is operated from the difference current DELTAIL and the operation result is outputted to the display to be displayed thereon. By this method, the concns. of oxygen and moisture in gas to be measured can be periodically measured by one limit current type oxygen sensor using a solid electrolyte.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62194724A JPS6438645A (en) | 1987-08-04 | 1987-08-04 | Method for measuring concentration of gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62194724A JPS6438645A (en) | 1987-08-04 | 1987-08-04 | Method for measuring concentration of gas |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6438645A true JPS6438645A (en) | 1989-02-08 |
Family
ID=16329188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62194724A Pending JPS6438645A (en) | 1987-08-04 | 1987-08-04 | Method for measuring concentration of gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6438645A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0596520A (en) * | 1991-10-05 | 1993-04-20 | Isao Matsushita | Method of dry-forming board-like building material such as tile |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6064243A (en) * | 1983-09-19 | 1985-04-12 | Toyota Motor Corp | Method and apparatus for measuring humidity |
JPS61128153A (en) * | 1984-11-27 | 1986-06-16 | Toyota Central Res & Dev Lab Inc | Sensor for detecting plural gases and its preparation and gas component concentration detection apparatus using said sensor and separating plural gases to detect the same |
-
1987
- 1987-08-04 JP JP62194724A patent/JPS6438645A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6064243A (en) * | 1983-09-19 | 1985-04-12 | Toyota Motor Corp | Method and apparatus for measuring humidity |
JPS61128153A (en) * | 1984-11-27 | 1986-06-16 | Toyota Central Res & Dev Lab Inc | Sensor for detecting plural gases and its preparation and gas component concentration detection apparatus using said sensor and separating plural gases to detect the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0596520A (en) * | 1991-10-05 | 1993-04-20 | Isao Matsushita | Method of dry-forming board-like building material such as tile |
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