JPS5598343A - Determining method of gas concentration - Google Patents

Determining method of gas concentration

Info

Publication number
JPS5598343A
JPS5598343A JP642079A JP642079A JPS5598343A JP S5598343 A JPS5598343 A JP S5598343A JP 642079 A JP642079 A JP 642079A JP 642079 A JP642079 A JP 642079A JP S5598343 A JPS5598343 A JP S5598343A
Authority
JP
Japan
Prior art keywords
detecting
voltage
gas concentration
terminals
series
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
JP642079A
Other languages
Japanese (ja)
Inventor
Kazuo Kato
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP642079A priority Critical patent/JPS5598343A/en
Publication of JPS5598343A publication Critical patent/JPS5598343A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To carry out the reading of the detection command easily by using a non- detecting zone forming means for preventing the detecting command with respect to level lower than a predetermined gas concentration level.
CONSTITUTION: An element 2 is connected in series with a variable resistor 4 for adjusting a detecting sensitivity of a gas sensor 1 and connected to an operating voltage source 5 through a switch 6. Voltage of the voltage source 5 converts the change of resistance value of the gas sensor 1 into an electric signal as voltage between terminals of the variable resistor 4. Between the terminals of the resistor 4, a voltmeter 6 connected in series with a non-detecting means 7 forming a not detected blind zone is inserted. By this non-detecting means 7, in the case of below predetermined voltage, meter pointer indicates zero.
COPYRIGHT: (C)1980,JPO&Japio
JP642079A 1979-01-22 1979-01-22 Determining method of gas concentration Pending JPS5598343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP642079A JPS5598343A (en) 1979-01-22 1979-01-22 Determining method of gas concentration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP642079A JPS5598343A (en) 1979-01-22 1979-01-22 Determining method of gas concentration

Publications (1)

Publication Number Publication Date
JPS5598343A true JPS5598343A (en) 1980-07-26

Family

ID=11637873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP642079A Pending JPS5598343A (en) 1979-01-22 1979-01-22 Determining method of gas concentration

Country Status (1)

Country Link
JP (1) JPS5598343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982844U (en) * 1982-11-25 1984-06-04 ティーディーケイ株式会社 Humidity detection control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982844U (en) * 1982-11-25 1984-06-04 ティーディーケイ株式会社 Humidity detection control circuit

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