JPS6438645A - Method for measuring concentration of gas - Google Patents

Method for measuring concentration of gas

Info

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
Application number
JP62194724A
Other languages
Japanese (ja)
Inventor
Akiyoshi Asada
Toshio Usui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Original Assignee
Fujikura Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP62194724A priority Critical patent/JPS6438645A/en
Publication of JPS6438645A publication Critical patent/JPS6438645A/en
Pending legal-status Critical Current

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.
JP62194724A 1987-08-04 1987-08-04 Method for measuring concentration of gas Pending JPS6438645A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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