WO2004008117A3 - Method and apparatus for monitoring particles flowing in a stack - Google Patents

Method and apparatus for monitoring particles flowing in a stack Download PDF

Info

Publication number
WO2004008117A3
WO2004008117A3 PCT/GB2003/003073 GB0303073W WO2004008117A3 WO 2004008117 A3 WO2004008117 A3 WO 2004008117A3 GB 0303073 W GB0303073 W GB 0303073W WO 2004008117 A3 WO2004008117 A3 WO 2004008117A3
Authority
WO
WIPO (PCT)
Prior art keywords
measurement beam
particle flow
stack
particles flowing
scattered
Prior art date
Application number
PCT/GB2003/003073
Other languages
French (fr)
Other versions
WO2004008117A2 (en
Inventor
Michael Rigby
Michael Wakefield
John Michael Blackwell
Victor Frederick Thomas
Original Assignee
Pcme Ltd
Michael Rigby
Michael Wakefield
John Michael Blackwell
Victor Frederick Thomas
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 Pcme Ltd, Michael Rigby, Michael Wakefield, John Michael Blackwell, Victor Frederick Thomas filed Critical Pcme Ltd
Priority to AU2003251334A priority Critical patent/AU2003251334A1/en
Priority to EP03764014A priority patent/EP1535049A2/en
Publication of WO2004008117A2 publication Critical patent/WO2004008117A2/en
Publication of WO2004008117A3 publication Critical patent/WO2004008117A3/en

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
    • G01N21/532—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke with measurement of scattering and transmission
    • 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
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
    • G01N2021/536—Measurement device mounted at stack
    • 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)
  • 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

A particle monitor for monitoring particles flowing in a stack comprises: (i) a light source (90) for generating a measurement beam (60) on a first side of the particle flow (70); (ii) an optical system and a tube connected thereto for directing the measurement beam (60) through said tube towards a second side of the particle flow (70) without the measurement beam (60) scattering from the particles, (iii) a reflector (210) arranged to reflect the measurement beam (60) back towards the first side of the particle flow (70), (iv) an optical system for directing the measurement beam (60) into the particle flow (70) such that light from the measurement beam (60) is scattered by the particles (70); and (v) a scattered-light detector (80) for detecting, on the first side of the particle flow (70), the scattered light.
PCT/GB2003/003073 2002-07-15 2003-07-15 Method and apparatus for monitoring particles flowing in a stack WO2004008117A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003251334A AU2003251334A1 (en) 2002-07-15 2003-07-15 Method and apparatus for monitoring particles flowing in a stack
EP03764014A EP1535049A2 (en) 2002-07-15 2003-07-15 Method and apparatus for monitoring particles flowing in a stack

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0216381.4 2002-07-15
GB0216381A GB2390893A (en) 2002-07-15 2002-07-15 Method and apparatus for monitoring particles in a stack

Publications (2)

Publication Number Publication Date
WO2004008117A2 WO2004008117A2 (en) 2004-01-22
WO2004008117A3 true WO2004008117A3 (en) 2004-03-18

Family

ID=9940461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/003073 WO2004008117A2 (en) 2002-07-15 2003-07-15 Method and apparatus for monitoring particles flowing in a stack

Country Status (4)

Country Link
EP (1) EP1535049A2 (en)
AU (1) AU2003251334A1 (en)
GB (1) GB2390893A (en)
WO (1) WO2004008117A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2422897A (en) 2005-02-02 2006-08-09 Pcme Ltd A monitor for monitoring particles flowing in a stack
GB2436871A (en) * 2006-04-04 2007-10-10 Pcme Ltd Optical beam dump for particle monitoring system
GB2444952A (en) * 2006-12-19 2008-06-25 Pcme Ltd Improvements in methods and apparatus for monitoring particles flowing in a stack
GB2552680B (en) 2016-08-02 2018-09-19 Pcme Ltd Apparatus and method for monitoring particle flow in a stack
CN109253702B (en) * 2018-11-08 2023-07-28 东莞职业技术学院 PCB drilling quick overhaul method and equipment
CN112014280B (en) * 2020-08-27 2023-11-24 苏州亿利安机电科技有限公司 On-line detection method of direct-reading dust concentration measuring instrument

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004098A1 (en) * 1982-05-10 1983-11-24 United Technologies Corporation Forward scattering laser particulate sensor
EP0848243A2 (en) * 1996-12-06 1998-06-17 United Sciences, Inc. Method and apparatus for monitoring particulates using beam-steered solid-state light source

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU873041A1 (en) * 1978-01-24 1981-10-15 Предприятие П/Я А-7555 Photoelectric transducer
US4249244A (en) * 1978-05-03 1981-02-03 Ppm, Inc. Electro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devices
US4361403A (en) * 1978-06-26 1982-11-30 Loos Hendricus G Multiple wavelength instrument for measurement of particle size distributions
US4247205A (en) * 1979-02-02 1981-01-27 Measurex Corporation Gas measuring apparatus with standardization means, and method therefor
DE3764783D1 (en) * 1986-12-08 1990-10-11 Mitsubishi Electric Corp LASER APPARATUS.
JPS63311144A (en) * 1987-06-13 1988-12-19 Horiba Ltd Apparatus for measuring fine grain in liquid
EP0361770A3 (en) * 1988-09-30 1991-03-20 Kowa Company Ltd. Particle measuring method and apparatus
US5028790A (en) * 1990-05-07 1991-07-02 Lear Siegler Measurement Controls Corporation Apparatus for full-system zero check and window soiling measurement and correction for transmissometers
US5269937A (en) * 1990-10-23 1993-12-14 Cetus Corporation HPLC light scattering detector for biopolymers
US5305073A (en) * 1992-02-12 1994-04-19 Precision Detectors, Inc. Methods and apparatus for molecular characterization
US5418615A (en) * 1994-02-25 1995-05-23 Axiom Analytical, Inc. Probe for liquid sample analysis by light transmission
US6137108A (en) * 1998-06-17 2000-10-24 Foss Nirsystems Incorporated Instrument and method for spectroscopic analysis by reflectance and transmittance

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004098A1 (en) * 1982-05-10 1983-11-24 United Technologies Corporation Forward scattering laser particulate sensor
EP0848243A2 (en) * 1996-12-06 1998-06-17 United Sciences, Inc. Method and apparatus for monitoring particulates using beam-steered solid-state light source

Also Published As

Publication number Publication date
GB0216381D0 (en) 2002-08-21
EP1535049A2 (en) 2005-06-01
AU2003251334A1 (en) 2004-02-02
WO2004008117A2 (en) 2004-01-22
AU2003251334A8 (en) 2004-02-02
GB2390893A (en) 2004-01-21

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