GB1388212A - Measurement of fine dust concentrations - Google Patents

Measurement of fine dust concentrations

Info

Publication number
GB1388212A
GB1388212A GB207873A GB207873A GB1388212A GB 1388212 A GB1388212 A GB 1388212A GB 207873 A GB207873 A GB 207873A GB 207873 A GB207873 A GB 207873A GB 1388212 A GB1388212 A GB 1388212A
Authority
GB
United Kingdom
Prior art keywords
dec
fed
dust concentrations
measurement
addition
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.)
Expired
Application number
GB207873A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband GmbH
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
Priority claimed from DE19722260150 external-priority patent/DE2260150C3/en
Priority claimed from DE19722260313 external-priority patent/DE2260313C2/en
Application filed by Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of GB1388212A publication Critical patent/GB1388212A/en
Expired 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke

Landscapes

  • Physics & Mathematics (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)

Abstract

1388212 Direct measurement of fire dust concentrations BERGWERKSVERBAND GmbH 15 Jan 1973 [8 Dec 1972 9 Dec 1972] 2078/73 Addition to 1328075 Heading G1A The application is a Patent of Addition to Patent No. 1328,075 with the improvements being the extension of the wavelength range to 2,000 nm and/or measuring the scattered radiation directly (that is, without a comparison beam etc.). In an apparatus, Fig. 1, comprising an open ended tube 4, through which the atmosphere to be tested may pass, light (800 nm-2,000 nm) from a gallium arsenide diode 1 fed by an oscillator (15), Fig.2 (not shown), that has been scattered through an angle of approximately 70 degrees is received by silicon photo-diode 8 as shown. The photodiodes output is amplified, demodulated and fed to an adjustable amplifier for calibrating the apparatus.
GB207873A 1972-12-08 1973-01-15 Measurement of fine dust concentrations Expired GB1388212A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722260150 DE2260150C3 (en) 1972-12-08 1972-12-08 Method and device for the determination of fine dust concentrations
DE19722260313 DE2260313C2 (en) 1972-12-09 1972-12-09 Method and device for the determination of fine dust concentrations

Publications (1)

Publication Number Publication Date
GB1388212A true GB1388212A (en) 1975-03-26

Family

ID=25764209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB207873A Expired GB1388212A (en) 1972-12-08 1973-01-15 Measurement of fine dust concentrations

Country Status (3)

Country Link
JP (1) JPS4990984A (en)
FR (1) FR2210290A6 (en)
GB (1) GB1388212A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107576601A (en) * 2017-09-20 2018-01-12 张家港朗亿机电设备有限公司 Suitable for the particulate matter on-line checking and analysis meter in urban track traffic place
CN109752301A (en) * 2019-03-05 2019-05-14 北京英视睿达科技有限公司 The measuring device and check and correction factor determination method of total suspended particles concentration

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960342A (en) * 1982-09-30 1984-04-06 Toyota Motor Corp System for measuring dust concentration
JPS6076645A (en) * 1983-10-03 1985-05-01 Hajime Kano Dust-concentration measuring apparatus
JP3015634B2 (en) * 1993-09-07 2000-03-06 ホーチキ株式会社 Scattered light smoke detector
JP3015633B2 (en) * 1993-09-07 2000-03-06 ホーチキ株式会社 Scattered light smoke detector
JP6437732B2 (en) * 2014-03-28 2018-12-12 能美防災株式会社 smoke detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107576601A (en) * 2017-09-20 2018-01-12 张家港朗亿机电设备有限公司 Suitable for the particulate matter on-line checking and analysis meter in urban track traffic place
CN107576601B (en) * 2017-09-20 2023-11-17 张家港朗亿机电设备有限公司 Particle on-line detection and analysis instrument suitable for urban rail transit places
CN109752301A (en) * 2019-03-05 2019-05-14 北京英视睿达科技有限公司 The measuring device and check and correction factor determination method of total suspended particles concentration

Also Published As

Publication number Publication date
JPS4990984A (en) 1974-08-30
FR2210290A6 (en) 1974-07-05

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Legal Events

Date Code Title Description
PS Patent sealed