GB1271454A - Method for detecting and measuring the concentration of substances in air or other fluid - Google Patents
Method for detecting and measuring the concentration of substances in air or other fluidInfo
- Publication number
- GB1271454A GB1271454A GB3442369A GB3442369A GB1271454A GB 1271454 A GB1271454 A GB 1271454A GB 3442369 A GB3442369 A GB 3442369A GB 3442369 A GB3442369 A GB 3442369A GB 1271454 A GB1271454 A GB 1271454A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- concentration
- fluid
- substance
- filter medium
- 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
Links
- 239000000126 substance Substances 0.000 title abstract 7
- 239000012530 fluid Substances 0.000 title abstract 5
- 239000002245 particle Substances 0.000 abstract 4
- 239000000470 constituent Substances 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000004040 coloring Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000000704 physical effect Effects 0.000 abstract 1
- 238000002310 reflectometry Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
- G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth 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)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
1,271,454. Detecting particle concentration in gas. L. GRANDJACQUET. 8 July, 1969 [8 July, 1968], No. 34423/69. Heading B1T. [Also in Divisions Gl and G4] In the measurement of the concentration of a particular substance carried by, or contained in, air or other fluids, by passing the fluid through or over a filter medium to cause a change in a physical property of the filter medium or of a substance carried thereby, which change is proportional to the amount of the substance intercepted, the change is sensed photoelectrically (e.g. by monitoring the reflectivity or transmisivity of the filter medium) and every time a predetermined level of optical density is attained, either the filter medium is replaced by a fresh filter or a fresh portion of the same filter strip is introduced. In this way, the concentration of the substance in the fluid may be determined in terms of the number of times the predetermined level is attained (i.e. the number of fresh filters or filter strip portions used) for a predetermined quantity of fluid or a predetermined time. Typical applications are: detection of solid (carbon &c) particles in the atmosphere by deposition on (and resultant blackening of) a white filter; detection of concentration of constituent of a gas by reaction of constituent with chemical carried by filter; measurement of solid particles in air by colouring deposited particles with chemical contained in filter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT3826568 | 1968-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1271454A true GB1271454A (en) | 1972-04-19 |
Family
ID=11246013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3442369A Expired GB1271454A (en) | 1968-07-08 | 1969-07-08 | Method for detecting and measuring the concentration of substances in air or other fluid |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA925321A (en) |
| DE (1) | DE1930206A1 (en) |
| FR (1) | FR2014533A1 (en) |
| GB (1) | GB1271454A (en) |
| NL (1) | NL6910420A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2938919A1 (en) * | 2008-11-21 | 2010-05-28 | Peugeot Citroen Automobiles Sa | Solid particles i.e. soot particles, quantity evaluating method for diesel engine of motor vehicle, involves evaluating number and mass of emitted particles from comparison result of brightness measurement with calibration data |
| FR2938920A1 (en) * | 2008-11-21 | 2010-05-28 | Peugeot Citroen Automobiles Sa | Particles i.e. soot particles, emission controlling method for diesel engine of e.g. passenger car, involves calculating average of local values of optical property, and determining quantity of particles from average and correlation curves |
| CN104422641A (en) * | 2013-09-02 | 2015-03-18 | 张卿 | Gas particulate matter measurement instrument |
| CN106018227A (en) * | 2016-07-27 | 2016-10-12 | 广东美的制冷设备有限公司 | Method and system for detecting concentration of indoor air dust particles and household appliance |
| CN106226209A (en) * | 2016-07-27 | 2016-12-14 | 广东美的制冷设备有限公司 | A kind of room air dust particle concentration detection method, system and household electrical appliance |
-
1969
- 1969-06-13 DE DE19691930206 patent/DE1930206A1/en active Pending
- 1969-06-23 CA CA055114A patent/CA925321A/en not_active Expired
- 1969-07-07 NL NL6910420A patent/NL6910420A/xx unknown
- 1969-07-07 FR FR6922959A patent/FR2014533A1/fr not_active Withdrawn
- 1969-07-08 GB GB3442369A patent/GB1271454A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2938919A1 (en) * | 2008-11-21 | 2010-05-28 | Peugeot Citroen Automobiles Sa | Solid particles i.e. soot particles, quantity evaluating method for diesel engine of motor vehicle, involves evaluating number and mass of emitted particles from comparison result of brightness measurement with calibration data |
| FR2938920A1 (en) * | 2008-11-21 | 2010-05-28 | Peugeot Citroen Automobiles Sa | Particles i.e. soot particles, emission controlling method for diesel engine of e.g. passenger car, involves calculating average of local values of optical property, and determining quantity of particles from average and correlation curves |
| CN104422641A (en) * | 2013-09-02 | 2015-03-18 | 张卿 | Gas particulate matter measurement instrument |
| CN106018227A (en) * | 2016-07-27 | 2016-10-12 | 广东美的制冷设备有限公司 | Method and system for detecting concentration of indoor air dust particles and household appliance |
| CN106226209A (en) * | 2016-07-27 | 2016-12-14 | 广东美的制冷设备有限公司 | A kind of room air dust particle concentration detection method, system and household electrical appliance |
| CN106226209B (en) * | 2016-07-27 | 2019-05-31 | 广东美的制冷设备有限公司 | A kind of room air dust particle concentration detection method, system and household electrical appliance |
| CN106018227B (en) * | 2016-07-27 | 2019-06-07 | 广东美的制冷设备有限公司 | A kind of room air dust particle concentration detection method, system and household electrical appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1930206A1 (en) | 1970-02-05 |
| CA925321A (en) | 1973-05-01 |
| NL6910420A (en) | 1970-01-12 |
| FR2014533A1 (en) | 1970-04-17 |
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