JPS5236080A - Weak flame detector - Google Patents

Weak flame detector

Info

Publication number
JPS5236080A
JPS5236080A JP11176975A JP11176975A JPS5236080A JP S5236080 A JPS5236080 A JP S5236080A JP 11176975 A JP11176975 A JP 11176975A JP 11176975 A JP11176975 A JP 11176975A JP S5236080 A JPS5236080 A JP S5236080A
Authority
JP
Japan
Prior art keywords
flame
flame detector
weak flame
weak
stimulus
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
JP11176975A
Other languages
Japanese (ja)
Inventor
Takenobu Yabe
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.)
TOHO SEISAKUSHIYO KK
TOHO SEISAKUSHO KK
TOUHOU SEISAKUSHIYO KK
Original Assignee
TOHO SEISAKUSHIYO KK
TOHO SEISAKUSHO KK
TOUHOU SEISAKUSHIYO KK
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 TOHO SEISAKUSHIYO KK, TOHO SEISAKUSHO KK, TOUHOU SEISAKUSHIYO KK filed Critical TOHO SEISAKUSHIYO KK
Priority to JP11176975A priority Critical patent/JPS5236080A/en
Publication of JPS5236080A publication Critical patent/JPS5236080A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Abstract

PURPOSE:To operate a waveform shaping circuit so that a flame detector responds only with stimulus by flame ultraviolet rays contained in a relatively long flame without responding to short pulse signals such as cosmic rays, thereby accurately detecting any weak flame without false operation.
JP11176975A 1975-09-17 1975-09-17 Weak flame detector Pending JPS5236080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11176975A JPS5236080A (en) 1975-09-17 1975-09-17 Weak flame detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11176975A JPS5236080A (en) 1975-09-17 1975-09-17 Weak flame detector

Publications (1)

Publication Number Publication Date
JPS5236080A true JPS5236080A (en) 1977-03-19

Family

ID=14569697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11176975A Pending JPS5236080A (en) 1975-09-17 1975-09-17 Weak flame detector

Country Status (1)

Country Link
JP (1) JPS5236080A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190790U (en) * 1982-06-14 1983-12-19 ダイキン工業株式会社 Automatic fire extinguishing system control circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015559A (en) * 1973-06-08 1975-02-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015559A (en) * 1973-06-08 1975-02-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190790U (en) * 1982-06-14 1983-12-19 ダイキン工業株式会社 Automatic fire extinguishing system control circuit

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