GB1512424A - Smoke density measuring apparatus - Google Patents
Smoke density measuring apparatusInfo
- Publication number
- GB1512424A GB1512424A GB21656/75A GB2165675A GB1512424A GB 1512424 A GB1512424 A GB 1512424A GB 21656/75 A GB21656/75 A GB 21656/75A GB 2165675 A GB2165675 A GB 2165675A GB 1512424 A GB1512424 A GB 1512424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- elements
- filter paper
- paper
- gas
- 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
- 239000000779 smoke Substances 0.000 title abstract 2
- 238000001739 density measurement Methods 0.000 abstract 1
- 238000005259 measurement 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)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1512424 Moving band filter SNAMPROGETTI SpA 20 May 1975 [21 May 1974] 21656/75 Heading BIT [Also in Division G1] A filter holder for use in smoke density measurements comprises casing 10, fixed part 11 closing one end of the casing, a mobile part comprising concentric elements 12, 13, a magnetic field producing system comprising fixed part 16, mobile part 17 and electromagnet coil 8, movement of part 17 towards elements 12, 13 temporarily clamping a filter paper 20 which is intermittently moved across aligned gas passages 11a, 12a between part 17 and the elements, and a three way electromagnetically operated valve constructed to prevent return of the gas to the filter paper, the measurement device in use including a piston pump for drawing gas to be tested through the filter holder and a controlling programming device, the piston stroke and stop time being adjustable to compensate for temperature and pressure variations, for example to ensure that the pressure drop caused by the filter paper has reached zero when readings of the blackening of the paper are taken using a scanning device (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23012/74A IT1012689B (en) | 1974-05-21 | 1974-05-21 | AUTOMATIC EQUIPMENT FOR DETERMINING THE FU MOSITA INDEX |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1512424A true GB1512424A (en) | 1978-06-01 |
Family
ID=11202863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21656/75A Expired GB1512424A (en) | 1974-05-21 | 1975-05-20 | Smoke density measuring apparatus |
Country Status (13)
| Country | Link |
|---|---|
| AT (1) | AT376802B (en) |
| BE (1) | BE829302A (en) |
| CA (1) | CA1047793A (en) |
| CH (1) | CH592874A5 (en) |
| CS (1) | CS207561B2 (en) |
| DD (1) | DD118172A5 (en) |
| DE (1) | DE2522256C3 (en) |
| FR (1) | FR2272388B1 (en) |
| GB (1) | GB1512424A (en) |
| IT (1) | IT1012689B (en) |
| NL (1) | NL7505837A (en) |
| YU (1) | YU40118B (en) |
| ZA (1) | ZA753291B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2612704A (en) * | 2021-11-03 | 2023-05-10 | Chinese Acad Meteorological Sciences | Electric valve type sampler |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE411147B (en) * | 1978-04-24 | 1979-12-03 | Linder Ernst Carl A G | AIR Sampler ASPIRATOR |
| DE2948812A1 (en) * | 1978-04-24 | 1980-12-11 | E Linder | ASPIRATOR FOR AIR SAMPLING |
| DE3402747A1 (en) * | 1984-01-27 | 1985-08-08 | Robert Bosch Gmbh, 7000 Stuttgart | DIESEL SMOKE MEASURING DEVICE |
| CN106370572A (en) * | 2016-09-08 | 2017-02-01 | 中国航空动力机械研究所 | Filter paper clamp head |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD74370B (en) * | ||||
| FR1408903A (en) * | 1964-07-09 | 1965-08-20 | Inst Nat Rech Chimique | Dust concentration measuring device |
-
1974
- 1974-05-21 IT IT23012/74A patent/IT1012689B/en active
-
1975
- 1975-05-16 YU YU1265/75A patent/YU40118B/en unknown
- 1975-05-16 NL NL7505837A patent/NL7505837A/en active Search and Examination
- 1975-05-20 CA CA227,320A patent/CA1047793A/en not_active Expired
- 1975-05-20 CS CS753517A patent/CS207561B2/en unknown
- 1975-05-20 DE DE2522256A patent/DE2522256C3/en not_active Expired
- 1975-05-20 GB GB21656/75A patent/GB1512424A/en not_active Expired
- 1975-05-20 AT AT0381475A patent/AT376802B/en not_active IP Right Cessation
- 1975-05-20 FR FR7515721A patent/FR2272388B1/fr not_active Expired
- 1975-05-21 CH CH649475A patent/CH592874A5/xx not_active IP Right Cessation
- 1975-05-21 ZA ZA00753291A patent/ZA753291B/en unknown
- 1975-05-21 DD DD186156A patent/DD118172A5/xx unknown
- 1975-05-21 BE BE156544A patent/BE829302A/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2612704A (en) * | 2021-11-03 | 2023-05-10 | Chinese Acad Meteorological Sciences | Electric valve type sampler |
| GB2612704B (en) * | 2021-11-03 | 2024-01-03 | Chinese Acad Meteorological Sciences | Electric valve type sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2522256C3 (en) | 1979-10-25 |
| ATA381475A (en) | 1984-05-15 |
| YU40118B (en) | 1985-08-31 |
| NL7505837A (en) | 1975-11-25 |
| CH592874A5 (en) | 1977-11-15 |
| CS207561B2 (en) | 1981-08-31 |
| ZA753291B (en) | 1976-05-26 |
| DE2522256A1 (en) | 1975-11-27 |
| AT376802B (en) | 1985-01-10 |
| FR2272388B1 (en) | 1977-04-15 |
| YU126575A (en) | 1982-05-31 |
| CA1047793A (en) | 1979-02-06 |
| BE829302A (en) | 1975-09-15 |
| DD118172A5 (en) | 1976-02-12 |
| FR2272388A1 (en) | 1975-12-19 |
| IT1012689B (en) | 1977-03-10 |
| DE2522256B2 (en) | 1979-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |