JPS52152273A - Action checking method of light dimming type smoke sensor - Google Patents

Action checking method of light dimming type smoke sensor

Info

Publication number
JPS52152273A
JPS52152273A JP6887676A JP6887676A JPS52152273A JP S52152273 A JPS52152273 A JP S52152273A JP 6887676 A JP6887676 A JP 6887676A JP 6887676 A JP6887676 A JP 6887676A JP S52152273 A JPS52152273 A JP S52152273A
Authority
JP
Japan
Prior art keywords
smoke sensor
checking method
type smoke
light dimming
dimming type
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
JP6887676A
Other languages
Japanese (ja)
Inventor
Kuniharu Katazuki
Toru Kahara
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP6887676A priority Critical patent/JPS52152273A/en
Publication of JPS52152273A publication Critical patent/JPS52152273A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To enable to simply check the action, by regulating the luminous driving circuit, supplying electric current to the luminous element, with switch, without using real smoke.
JP6887676A 1976-06-11 1976-06-11 Action checking method of light dimming type smoke sensor Pending JPS52152273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6887676A JPS52152273A (en) 1976-06-11 1976-06-11 Action checking method of light dimming type smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6887676A JPS52152273A (en) 1976-06-11 1976-06-11 Action checking method of light dimming type smoke sensor

Publications (1)

Publication Number Publication Date
JPS52152273A true JPS52152273A (en) 1977-12-17

Family

ID=13386288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6887676A Pending JPS52152273A (en) 1976-06-11 1976-06-11 Action checking method of light dimming type smoke sensor

Country Status (1)

Country Link
JP (1) JPS52152273A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582657U (en) * 1981-06-30 1983-01-08 ニッタン株式会社 Separate dimming type smoke detector
JPS5956153A (en) * 1982-09-25 1984-03-31 Horiba Ltd Discriminating device of abnormal operation in cross-flow infrared gas analyzer
JPS63128454U (en) * 1987-02-17 1988-08-23
JPH02138396U (en) * 1989-04-17 1990-11-19

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582657U (en) * 1981-06-30 1983-01-08 ニッタン株式会社 Separate dimming type smoke detector
JPS5956153A (en) * 1982-09-25 1984-03-31 Horiba Ltd Discriminating device of abnormal operation in cross-flow infrared gas analyzer
JPH0222333B2 (en) * 1982-09-25 1990-05-18 Horiba Seisakusho Kk
JPS63128454U (en) * 1987-02-17 1988-08-23
JPH0524205Y2 (en) * 1987-02-17 1993-06-21
JPH02138396U (en) * 1989-04-17 1990-11-19

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