JPS55155241A - Gas detector - Google Patents

Gas detector

Info

Publication number
JPS55155241A
JPS55155241A JP6367879A JP6367879A JPS55155241A JP S55155241 A JPS55155241 A JP S55155241A JP 6367879 A JP6367879 A JP 6367879A JP 6367879 A JP6367879 A JP 6367879A JP S55155241 A JPS55155241 A JP S55155241A
Authority
JP
Japan
Prior art keywords
resistance
temperature
gas
detection
compensation
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
JP6367879A
Other languages
Japanese (ja)
Inventor
Yoshihiko Nakatani
Seiichi Nakatani
Masayuki Sakai
Michio Matsuoka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6367879A priority Critical patent/JPS55155241A/en
Publication of JPS55155241A publication Critical patent/JPS55155241A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

PURPOSE: To eliminate the initial malfunctioning in gas detection by means of a compensation resistor indicating positive resistance temperature characteristic at low temperature connected in series to the gas sensitive body.
CONSTITUTION: A compensation resistance element 4 employing α-Fe2O3 or the like indicating the positive resistance temperature characteristic at the temperature lower than the normal working temperature (250W450°C) is connected in series with the gas detector 3 emplaying α-Fe2O3 or the like. When a switch 1 is closed to apply the voltage to heaters 2 and 2' at a level equipvalent to the normal temperature, the detection element 3 and the compensation element 4 indicated changes in the resistance value respectively, and settle for a resistance level equivalent to the normal temperature. The detection of gas by the composite resistance eliminates the cause of the initial malfunctioning.
COPYRIGHT: (C)1980,JPO&Japio
JP6367879A 1979-05-23 1979-05-23 Gas detector Pending JPS55155241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6367879A JPS55155241A (en) 1979-05-23 1979-05-23 Gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6367879A JPS55155241A (en) 1979-05-23 1979-05-23 Gas detector

Publications (1)

Publication Number Publication Date
JPS55155241A true JPS55155241A (en) 1980-12-03

Family

ID=13236253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6367879A Pending JPS55155241A (en) 1979-05-23 1979-05-23 Gas detector

Country Status (1)

Country Link
JP (1) JPS55155241A (en)

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