GB1471335A - Apparatus for use in monitoring a stream of gases - Google Patents
Apparatus for use in monitoring a stream of gasesInfo
- Publication number
- GB1471335A GB1471335A GB1566674A GB1566674A GB1471335A GB 1471335 A GB1471335 A GB 1471335A GB 1566674 A GB1566674 A GB 1566674A GB 1566674 A GB1566674 A GB 1566674A GB 1471335 A GB1471335 A GB 1471335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- measured
- flow
- slotted
- discs
- 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
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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
Abstract
1471335 Analyzing flue gases photo-electrically BAILEY METER CO 9 April 1974 [9 April 1973] 15666/74 Heading G1A In an apparatus for analyzing a flowing gas in a duct, a slotted pipe 6, Fig. 1, extends across the duct between a radiation source 18 and a detector 20; the gas passes through the slotted pipe, and the radiation absorbed by the gas is measured. A purging gas, e.g. air, is blown into each end of the slotted tube via inlets 21, 22 and apertured discs 24, 26, this gas serving to define a flow of the gas being measured and also to keep the optical elements of the measuring system clean. The slotted tube 6 is typically 4" diameter, and may have internal reinforcements, Figs. 2, 4 (not shown). The apertured discs have holes 2" or less and the minimum air flow-rate for consistent measurements is about 2.5 s.c.f.m. per inch of aperture diameter. The discs may have their upper regions angled away from the flow of gas to be measured, Fig. 3 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00348876A US3847487A (en) | 1973-04-09 | 1973-04-09 | Constant effective slot length light pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1471335A true GB1471335A (en) | 1977-04-21 |
Family
ID=23369947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1566674A Expired GB1471335A (en) | 1973-04-09 | 1974-04-09 | Apparatus for use in monitoring a stream of gases |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3847487A (en) |
| JP (1) | JPS5236025B2 (en) |
| CA (1) | CA989642A (en) |
| FR (1) | FR2224754A1 (en) |
| GB (1) | GB1471335A (en) |
| IT (1) | IT1010912B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4206630A (en) * | 1979-03-12 | 1980-06-10 | Econics Corporation | Sample chamber for gas analyzer |
| US4205550A (en) * | 1979-03-12 | 1980-06-03 | Econics Corporation | Sample chamber for gas analyzer |
| US4277131A (en) * | 1980-01-29 | 1981-07-07 | The United States Of America As Represented By The Administrator Of The United States Environmental Protection Agency | Antifouling window assembly |
| GB2148487B (en) * | 1983-10-13 | 1987-01-14 | Perkins Engines Group | Apparatus for measuring smoke density |
| US4572663A (en) * | 1983-12-22 | 1986-02-25 | Elliott Turbomachinery Co., Inc. | Method and apparatus for selectively illuminating a particular blade in a turbomachine |
| US4687327A (en) * | 1985-02-25 | 1987-08-18 | The Dow Chemical Company | Oil mist monitor |
| EP0463166A4 (en) * | 1989-12-29 | 1993-03-03 | Sredneaziatsky Nauchno-Issledovatelsky I Proektny Institut Tsvetnoi Mettallurgii | Device for measuring gas optical density |
| US6565352B2 (en) * | 2001-04-09 | 2003-05-20 | Ken E. Nielsen | Smoke density monitor |
| US7319524B2 (en) * | 2005-03-28 | 2008-01-15 | Honeywell International, Inc. | Air purged optical densitometer |
| US20100188659A1 (en) * | 2009-01-29 | 2010-07-29 | Valery Shver | In-situ devices, systems, and methods for gas species measurement |
| US9797397B2 (en) * | 2015-09-04 | 2017-10-24 | Hamilton Sundstrand Corporation | Pump sleeve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1901570A (en) * | 1928-11-09 | 1933-03-14 | Westinghouse Electric & Mfg Co | Smoke indicator |
| US2624012A (en) * | 1949-04-02 | 1952-12-30 | Bailey Meter Co | Radiant energy measuring system |
| GB1135146A (en) * | 1967-07-11 | 1968-11-27 | Central Electr Generat Board | Optical devices for examination of smoke or dust laden gas |
| US3628028A (en) * | 1968-03-01 | 1971-12-14 | Honeywell Inc | Window cleaning apparatus for photometric instruments |
-
1973
- 1973-04-09 US US00348876A patent/US3847487A/en not_active Expired - Lifetime
-
1974
- 1974-03-11 CA CA194,562A patent/CA989642A/en not_active Expired
- 1974-03-27 FR FR7410441A patent/FR2224754A1/fr not_active Withdrawn
- 1974-04-03 JP JP49037050A patent/JPS5236025B2/ja not_active Expired
- 1974-04-04 IT IT42648/74A patent/IT1010912B/en active
- 1974-04-09 GB GB1566674A patent/GB1471335A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2416672B2 (en) | 1977-03-31 |
| US3847487A (en) | 1974-11-12 |
| DE2416672A1 (en) | 1974-10-24 |
| JPS49131491A (en) | 1974-12-17 |
| FR2224754A1 (en) | 1974-10-31 |
| JPS5236025B2 (en) | 1977-09-13 |
| CA989642A (en) | 1976-05-25 |
| IT1010912B (en) | 1977-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |