JPS641930A - Dust measuring apparatus - Google Patents

Dust measuring apparatus

Info

Publication number
JPS641930A
JPS641930A JP15661087A JP15661087A JPS641930A JP S641930 A JPS641930 A JP S641930A JP 15661087 A JP15661087 A JP 15661087A JP 15661087 A JP15661087 A JP 15661087A JP S641930 A JPS641930 A JP S641930A
Authority
JP
Japan
Prior art keywords
dust
air
filter
amount
trapping
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
JP15661087A
Other languages
Japanese (ja)
Other versions
JPH011930A (en
Inventor
Kazuo Amaya
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP15661087A priority Critical patent/JPS641930A/en
Publication of JPH011930A publication Critical patent/JPH011930A/en
Publication of JPS641930A publication Critical patent/JPS641930A/en
Pending legal-status Critical Current

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  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE: To measure the amount of dust in air accurately, by determining a ratio of reflection or transmission of a light between a part having dust trapped with a filter for trapping dust and a white part with no dust trapped.
CONSTITUTION: An air passage hole 9' is made in an inner lid 7 and a fixed amount of atmospheric air is sucked through the air passage hole 9'. Air sucked is introduced to a pump through a dust trapping filter 4, when dust in the air is trapped to the circumference of the filter except for a lower part of a rubber body 8 for preventing passage of air. Thus, the center of the filter 4 looks white while the circumferential part thereof is colored according to the amount of dust. After the trapping of dust, the lid 7 is removed to let light irradiate a central white part 5 of the filter 4 and the dust attached part in the perimeter thereof. A ratio of transmission light or reflected light between both the parts is determined to measure the amount of dust in the air from the ratio.
COPYRIGHT: (C)1989,JPO&Japio
JP15661087A 1987-06-25 1987-06-25 Dust measuring apparatus Pending JPS641930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15661087A JPS641930A (en) 1987-06-25 1987-06-25 Dust measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15661087A JPS641930A (en) 1987-06-25 1987-06-25 Dust measuring apparatus

Publications (2)

Publication Number Publication Date
JPH011930A JPH011930A (en) 1989-01-06
JPS641930A true JPS641930A (en) 1989-01-06

Family

ID=15631499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15661087A Pending JPS641930A (en) 1987-06-25 1987-06-25 Dust measuring apparatus

Country Status (1)

Country Link
JP (1) JPS641930A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141309A (en) * 1990-05-05 1992-08-25 Firma Fedag Apparatus for indicating how dirty an air filter is in a vacuum-cleaning apparatus, in a room filter, etc.
JP2013241939A (en) * 2013-07-11 2013-12-05 Advantest Corp Collection amount measuring device, measuring method, program and recording medium
JP2013253981A (en) * 2013-07-05 2013-12-19 Advantest Corp Adhesion quantity measuring apparatus, measuring method, program, and recording medium
US8969807B2 (en) 2009-10-28 2015-03-03 Advantest Corporation Carrier and adhesion amount measuring apparatus, and measuring method, program, and recording medium of the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9370571B2 (en) 2011-05-19 2016-06-21 Mitsubishi Rayon Co., Ltd. Aqueous acrylamide solution, stabilizer for aqueous acrylamide solution, and stabilization method for aqueous acrylamide solution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141309A (en) * 1990-05-05 1992-08-25 Firma Fedag Apparatus for indicating how dirty an air filter is in a vacuum-cleaning apparatus, in a room filter, etc.
US8969807B2 (en) 2009-10-28 2015-03-03 Advantest Corporation Carrier and adhesion amount measuring apparatus, and measuring method, program, and recording medium of the same
JP2013253981A (en) * 2013-07-05 2013-12-19 Advantest Corp Adhesion quantity measuring apparatus, measuring method, program, and recording medium
JP2013241939A (en) * 2013-07-11 2013-12-05 Advantest Corp Collection amount measuring device, measuring method, program and recording medium

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