DE2141711B1 - Device for light signal transmission - Google Patents
Device for light signal transmissionInfo
- Publication number
- DE2141711B1 DE2141711B1 DE2141711A DE2141711DA DE2141711B1 DE 2141711 B1 DE2141711 B1 DE 2141711B1 DE 2141711 A DE2141711 A DE 2141711A DE 2141711D A DE2141711D A DE 2141711DA DE 2141711 B1 DE2141711 B1 DE 2141711B1
- Authority
- DE
- Germany
- Prior art keywords
- photodiodes
- light
- rolling
- light guide
- converging lens
- 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.)
- Granted
Links
- 230000008054 signal transmission Effects 0.000 title claims 2
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 4
- 238000007664 blowing Methods 0.000 claims 3
- 239000000428 dust Substances 0.000 claims 3
- 230000004888 barrier function Effects 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 2
- 238000009825 accumulation Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000498 cooling water Substances 0.000 claims 1
- 230000036039 immunity Effects 0.000 claims 1
- 230000001771 impaired effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 230000007257 malfunction Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 230000011514 reflex Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/0205—Mechanical elements; Supports for optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
- G01J5/041—Mountings in enclosures or in a particular environment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
- G01J5/041—Mountings in enclosures or in a particular environment
- G01J5/042—High-temperature environment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
- G01J5/048—Protective parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
- G01J5/051—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path using a gas purge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0801—Means for wavelength selection or discrimination
- G01J5/0802—Optical filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0806—Focusing or collimating elements, e.g. lenses or concave mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0818—Waveguides
- G01J5/0821—Optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/241—Light guide terminations
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
- G02B6/325—Optical coupling means having lens focusing means positioned between opposed fibre ends comprising a transparent member, e.g. window, protective plate
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4245—Mounting of the opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Control Of Metal Rolling (AREA)
Description
Um die erfindungsgemäße Anordnung betriebsfähig zu halten, ist es lediglich erforderlich, das vor der Sammellinse angeordnete Schutzglas sauber zu halten bzw. zu ersetzen, wenn es Wärmerisse aufweisen sollte. Ausrichtschwierigkeiten gibt es nicht. Die Kosten der Vorrichtung nach der Erfindung liegen darüber hinaus nicht höher als die eines gebräuchlichen Fotoauges, wenn von den Einbaukosten am Rollgang abgesehen wird. To keep the inventive arrangement operational, it is all that is necessary is to cleanly close the protective glass arranged in front of the converging lens keep or replace if it should show heat cracks. Alignment difficulties there is not any. the Cost of the device according to the invention are in addition, no higher than that of a common photo eye, if of the Installation costs on the roller table are disregarded.
Nachstehend ist ein bevorzugtes Ausführungsbeispiel der Erfindung mit Bezug auf die schematische Zeichnung näher beschrieben. Es zeigt Fig. 1 eine schematische Skizze des Aufbaus der Vorrichtung Fig. 2 und 3 je einen Ausschnitt aus Fig. 1 in vergrößertem Maßstab. Below is a preferred embodiment of the invention described in more detail with reference to the schematic drawing. 1 shows a schematic sketch of the structure of the device FIGS. 2 and 3 each have a section from Fig. 1 on an enlarged scale.
Unterhalb eines Rollganges in einem Warmwalzwerk ist, wie F i g. 1 zeigt, ein Stahlrohr 1 von etwa 50 bis 60 mm Innendurchmesser unter einem Winkel von etwa 20 bis 30° zwischen zwei Rollgangsrollen 3 in einer Haltevorrichtung 2 montiert. In dem Stahlrohrl, das auch als flexibler Schlauch ausgebildet werden kann, sitzt etwa 30 bis 70 cm vom Walzgut 4 entfernt die aus einer Sammellinse 5 gebildete Optik (Fig. 2) mit dem Infrarotfilter 6, welche durch ein Schutzglas 7 gegen das Walzgut 4 hin geschützt sind. Below a roller table in a hot rolling mill, as shown in FIG. 1 shows a steel pipe 1 of about 50 to 60 mm inside diameter at an angle from about 20 to 30 ° between two roller table rollers 3 in a holding device 2 assembled. In the steel tube, which can also be designed as a flexible hose can, sits about 30 to 70 cm away from the rolling stock 4 from a converging lens 5 formed optics (Fig. 2) with the infrared filter 6, which through a protective glass 7 are protected against the rolling stock 4 out.
Die Sammellinse 5 und das Infrarotfllter 6 sind in einem Drehkörper 8 (Fig. 2) angeordnet, der einerseits mit dem Schutzglas 7 und andererseits durch einen fest angeordneten Anschlußstutzen 9 abgeschlossen ist. In den Anschlußstutzen9 ist das eine Ende des LichtleiterslO in einer Büchsell eingeführt, die durch die Feststellschraube 12 gehalten wird. Das andere Ende des Lichtleiters 10 ist an das rohrförmige Bauelement 13 (F i g. 3) mit Fotodioden 14, 15 und Widerständen 16, 17 angeschlossen. The converging lens 5 and the infrared filter 6 are in a rotating body 8 (Fig. 2) arranged, on the one hand with the protective glass 7 and on the other hand through a fixed connection piece 9 is completed. In the connecting piece 9 one end of the light guide 10 is inserted into a bushing through which Locking screw 12 is held. The other end of the light guide 10 is to the tubular component 13 (FIG. 3) with photodiodes 14, 15 and resistors 16, 17 connected.
Die Foto dioden 14, 15 und die Widerstände 16, 17 sind in Brückenschaltung geschaltet, wobei die Fotodiodel4 mit dem LichtleiterlO gekoppelt ist. Die Diode 15 ist blind. Die Dioden 14, 15 und die Wider- stände 16, 17 sind in je einen Metallkörper 18, 19, z. B aus Messing, eingesetzt. Die Zwischenräume zwischen den Metallkörpern 18, 19 und dem Kabelklemmstück 20 sind zum Schutz der elektrischen Anschlüsse mit einer elastischen Isoliermasse ausgefüllt. The photo diodes 14, 15 and the resistors 16, 17 are in a bridge circuit switched, wherein the photodiode 4 is coupled to the light guide 10. The diode 15 is blind. The diodes 14, 15 and the resistors stands 16, 17 are each in a metal body 18, 19, e.g. B made of brass, inserted. The spaces between the metal bodies 18, 19 and the cable clamping piece 20 are to protect the electrical connections filled with an elastic insulating compound.
Zur Kühlung des Drehkörpers 8 mit Linse 5 und Filter 6 des Lichtleiters 10 und des Bauelementes 13 sowie zum Freihalten des Schutzglases 7 wird am unteren Ende des Stahlrohres 1 über einen Luftanschlußstutzen 21 Kühlluft eingeblasen (F i g. 1). For cooling the rotating body 8 with lens 5 and filter 6 of the light guide 10 and the component 13 and to keep the protective glass 7 free is at the bottom At the end of the steel pipe 1, cooling air is blown in via an air connection piece 21 (F i g. 1).
Durch diese Maßnahme kann das Walzgut auch kurze Zeit über der Vorrichtung liegenbleiben, bis es weiterbefördert bzw. bearbeitet wird, ohne die Vorrichtung in ihrer Funktionsweise zu beeinträchtigen.As a result of this measure, the rolling stock can also pass over the device for a short time remain in place until it is transported or processed without the device to impair their functioning.
Die Länge des LichtleiterslO ist mit Vorteil in einem verhältnismäßig großen Bereich frei wählbar, so daß das Bauelement 13 mit den Fotodioden 14, 15 auf jeden Fall außerhalb des Rollganges montiert werden kann und gut zugänglich ist. The length of the light guide 10 is advantageous in a relative manner large area freely selectable, so that the component 13 with the photodiodes 14, 15 In any case, it can be mounted outside the roller table and is easily accessible is.
An das Bauelement 13 ist der Verstärker 22 über eine Leitung 23 angeschlossen. In der Praxis ist bereits eine Länge der Leitung 23 von bis zu 150 m ohne Schwierigkeiten ausgeführt. Von der Steuerungselektronik mit dem Verstärker 22 und der Triggerstufe 24 werden die Steuerimpulse an einen Prozeßrechner 25 weitergegeben, der dann die entsprechenden Arbeits-, Schalt- und Meßvorgänge steuert, so daß die Produktion vollautomatisch ablaufen kann. The amplifier 22 is connected to the component 13 via a line 23. In practice, a length of the line 23 of up to 150 m is already without difficulty executed. From the control electronics with the amplifier 22 and the trigger stage 24, the control pulses are passed on to a process computer 25, which then the controls corresponding work, switching and measuring processes, so that production can run fully automatically.
An Stelle des Prozeßrechners 24 kann mit Vorteil jedes beliebige Meßinstrument, z. B. Temperatur-, Walzkraft-, Dickenmeßgerät, oder aber auch jede beliebige Steuereinrichtung an die Steuerungselektronik angeschlossen werden. Instead of the process computer 24, any one can advantageously be used Measuring instrument, e.g. B. temperature, rolling force, thickness measuring device, or any Any control device can be connected to the control electronics.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2141711 | 1971-08-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2141711B1 true DE2141711B1 (en) | 1973-03-01 |
DE2141711C2 DE2141711C2 (en) | 1973-09-27 |
Family
ID=5817256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2141711A Expired DE2141711C2 (en) | 1971-08-20 | 1971-08-20 | Device for light signal transmission |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2141711C2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0053227A1 (en) * | 1980-12-03 | 1982-06-09 | Ruhrkohle Aktiengesellschaft | Device for the measurement of the wall temperature of a coke oven |
EP0081219A2 (en) * | 1981-12-07 | 1983-06-15 | Dr. C. Otto & Co. GmbH | Device to measure the wall temperature of coke-oven chambers |
DE3411121A1 (en) * | 1984-03-26 | 1985-10-03 | Schleifring und Apparatebau GmbH, 8080 Fürstenfeldbruck | DEVICE FOR TRANSMITTING LIGHT SIGNALS BETWEEN TWO COMPONENTS |
EP3255398A1 (en) * | 2016-06-08 | 2017-12-13 | General Electric Technology GmbH | System, method and apparatus for adjusting a flame scanner |
-
1971
- 1971-08-20 DE DE2141711A patent/DE2141711C2/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0053227A1 (en) * | 1980-12-03 | 1982-06-09 | Ruhrkohle Aktiengesellschaft | Device for the measurement of the wall temperature of a coke oven |
EP0081219A2 (en) * | 1981-12-07 | 1983-06-15 | Dr. C. Otto & Co. GmbH | Device to measure the wall temperature of coke-oven chambers |
WO1983002156A1 (en) * | 1981-12-07 | 1983-06-23 | Stewen, Wilhelm | Device for measuring the temperature of walls in a coke furnace |
EP0081219A3 (en) * | 1981-12-07 | 1983-07-20 | Dr. C. Otto & Co. GmbH | Device to measure the wall temperature of coke-oven chambers |
DE3411121A1 (en) * | 1984-03-26 | 1985-10-03 | Schleifring und Apparatebau GmbH, 8080 Fürstenfeldbruck | DEVICE FOR TRANSMITTING LIGHT SIGNALS BETWEEN TWO COMPONENTS |
EP3255398A1 (en) * | 2016-06-08 | 2017-12-13 | General Electric Technology GmbH | System, method and apparatus for adjusting a flame scanner |
CN107477609A (en) * | 2016-06-08 | 2017-12-15 | 通用电器技术有限公司 | For adjusting system, the method and apparatus of flame monitor |
US10067292B2 (en) | 2016-06-08 | 2018-09-04 | General Electric Technology Gmbh | System, method and apparatus for adjusting a flame scanner |
Also Published As
Publication number | Publication date |
---|---|
DE2141711C2 (en) | 1973-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
EHJ | Ceased/non-payment of the annual fee |