GB1315357A - Light detector with cleaning and testing means - Google Patents
Light detector with cleaning and testing meansInfo
- Publication number
- GB1315357A GB1315357A GB3960370A GB3960370A GB1315357A GB 1315357 A GB1315357 A GB 1315357A GB 3960370 A GB3960370 A GB 3960370A GB 3960370 A GB3960370 A GB 3960370A GB 1315357 A GB1315357 A GB 1315357A
- Authority
- GB
- United Kingdom
- Prior art keywords
- web
- aug
- cleaning
- flame
- monitor
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
- F23N2229/06—Flame sensors with periodical shutters; Modulation signals
Abstract
1315357 Photo sensor cleaning FORNEY INTERNATIONAL Inc 17 Aug 1970 [15 Aug 1969] 39603/70 Heading G1A In a light detecting apparatus for, for example a flame monitor the sensitive element is kept clean by a web in contact with its surface and arranged periodically to perform a wiping moving, the web having an aperture which in the rest position allows light from the flame to impinge on the element and in being moved to effect the wiping performs a test on the monitor. The web is held in tension by a spring and is piston actuated. A blast of air is directed through the casing to effect cooling and to carry away the wiped dirt.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85060369A | 1969-08-15 | 1969-08-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1315357A true GB1315357A (en) | 1973-05-02 |
Family
ID=25308612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3960370A Expired GB1315357A (en) | 1969-08-15 | 1970-08-17 | Light detector with cleaning and testing means |
Country Status (5)
Country | Link |
---|---|
US (1) | US3609382A (en) |
DE (1) | DE2040587C3 (en) |
FR (1) | FR2058100A5 (en) |
GB (1) | GB1315357A (en) |
NL (1) | NL161870C (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3737663A (en) * | 1972-03-15 | 1973-06-05 | G Quittner | Radiation path termination housing |
US3825913A (en) * | 1972-03-31 | 1974-07-23 | Electronics Corp America | Fuel burner supervisory system |
GB1506043A (en) * | 1974-05-28 | 1978-04-05 | Bosch Gmbh Robert | Gas opacimeters |
IT1017844B (en) * | 1974-08-02 | 1977-08-10 | Sie Soc It Elettronica | OPTICAL SHUTTER FOR VERIFYING THE OPERATION OF FLAME DETECTORS |
US4011448A (en) * | 1975-08-08 | 1977-03-08 | Hordeski Michael F | Linear shaft encoder |
IT1056742B (en) * | 1975-11-27 | 1982-02-20 | S I E | Flame detector with testing shutter - has rotary body with supporting trunnions on each side in plain self-lubricating bearings |
FR2394757A1 (en) * | 1977-06-17 | 1979-01-12 | Forney International | Gas burner flame failure monitor - uses quartz fibre bundle in flexible tube between quartz lens and radiation detector |
FR2666138B1 (en) * | 1990-08-24 | 1992-12-11 | Pillard Chauffage | FLAME DETECTOR OF A BURNER. |
US5495112A (en) * | 1994-12-19 | 1996-02-27 | Elsag International N.V. | Flame detector self diagnostic system employing a modulated optical signal in composite with a flame detection signal |
-
1969
- 1969-08-15 US US850603A patent/US3609382A/en not_active Expired - Lifetime
-
1970
- 1970-08-14 DE DE2040587A patent/DE2040587C3/en not_active Expired
- 1970-08-14 NL NL7012043.A patent/NL161870C/en not_active IP Right Cessation
- 1970-08-14 FR FR7030035A patent/FR2058100A5/fr not_active Expired
- 1970-08-17 GB GB3960370A patent/GB1315357A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2040587A1 (en) | 1971-05-27 |
DE2040587B2 (en) | 1979-08-23 |
NL7012043A (en) | 1971-02-17 |
FR2058100A5 (en) | 1971-05-21 |
NL161870B (en) | 1979-10-15 |
US3609382A (en) | 1971-09-28 |
DE2040587C3 (en) | 1980-04-24 |
NL161870C (en) | 1980-03-17 |
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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 |