EP0531557B1 - Arrangement for monitoring a lamp, comprising a voltage source for electrical measurement - Google Patents

Arrangement for monitoring a lamp, comprising a voltage source for electrical measurement Download PDF

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Publication number
EP0531557B1
EP0531557B1 EP91115173A EP91115173A EP0531557B1 EP 0531557 B1 EP0531557 B1 EP 0531557B1 EP 91115173 A EP91115173 A EP 91115173A EP 91115173 A EP91115173 A EP 91115173A EP 0531557 B1 EP0531557 B1 EP 0531557B1
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EP
European Patent Office
Prior art keywords
lamp
solar cells
filter glass
burner
monitoring
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Expired - Lifetime
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EP91115173A
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German (de)
French (fr)
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EP0531557A1 (en
Inventor
Dieter Wertz
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Tiede GmbH and Co Risprufanlagen
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Tiede GmbH and Co Risprufanlagen
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection

Definitions

  • the invention relates to a device having an electrical measuring voltage source for monitoring a lamp unit, in particular an ultraviolet lamp used for irradiating test objects in magnetic powder and color penetration testing.
  • a lamp which has a light bulb as a burner, a screen arranged above it and a solar cell, these parts being supported by a lamp housing.
  • the solar cell arranged inside the screen and at a short distance from the light bulb is used to recharge a battery that drives a fan.
  • a dirty filter glass is not between the light bulb and the solar cell.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of simplifying the method for monitoring a lamp unit and ensuring the constant availability of the measuring device in a particularly simple manner.
  • the invention can be designed in such a way that an advantageous simplification results from the fact that the monitoring group, consisting of the solar cells, the sensor and / or the associated electronics, is attached to the lamp housing consisting of sheet metal by means of a holding magnet.
  • One variant of the invention provides that the solar cells and the sensor element are arranged on the outside of the disk-shaped or plate-shaped lamp or filter glass.
  • a further embodiment provides that the associated light, in particular a UV light, is connected in a stationary or displaceable manner to at least one suspension device or a mounting rail.
  • the workpieces to be tested are located below a flat glass filter 12 in the sense of FIG. 1.
  • the lamp is provided with a cooling fan 14 and can have lateral chambers 16 so that cooling air drawn in via lower slots 17 flows upward through these chambers and through upper slots 18 is discharged to the outside again with the aid of the cooling fan 14. This type of cooling is known.
  • a burner 19 for example a halogen burner, which serves as a light source, is located approximately in the middle of the lamp and aligned by a reflector 15, for example a concave mirror made of sheet metal, the light falls through the flat glass filter 12 onto the lower workpieces, not shown here.
  • An insert frame 13 is used for easy replacement of the dirty filter glass.
  • FIGS. 3 and 4 The details of the monitoring device are shown in FIGS. 3 and 4.
  • a sensor element 21 On the outside, ie the side of the flat glass filter 12 facing the workpiece to be tested, there is a sensor element 21 for the predetermined spectral range.
  • the sensor element 21 When using a UV light, the sensor element 21 is particularly sensitive to the wavelength of 365 nanometers. However, the invention is not restricted to this wavelength range.
  • One or more solar cells 20 are electrically connected to the sensor element. These components are, cf. 1, preferably arranged in a corner area of the flat glass filter 12 or the housing 10. They are advantageous or the like on a holding plate. 22 attached, which also contains a holding magnet 23 and the associated electronics unit 24.
  • the electronics unit 24 is connected to the solar cell (s) 20 and can also contain an acoustic or visual display device 25 for monitoring the lights.
  • the associated viewing or display field 25a can be that of a light scale on which LED elements optically graphically or digitally indicate that there is sufficient light intensity of the burner 19 on the outside behind the flat glass filter 12.
  • the display scale can also be shown separately from the electronics on a separate screen with enlarged symbols.
  • This invention is not only suitable for the monitoring of UV lamps, but wherever the decrease in light intensity or a selective light intensity in an optical beam path can be expected, i.e. for monitoring any lamp units par excellence, preferably (but not exclusively) ) in connection with a glass filter or only for monitoring the operational efficiency of an irradiated one Filters.
  • the invention is applicable both for stationary, but in individual cases also for portable or hand-operated lamps.
  • This also includes the various flash lamps, which can be provided with flat glass panes, prisms and / or lenses.

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Photovoltaic Devices (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Description

Die Erfindung betrifft eine, eine elektrische Meß-Spannungsquelle aufweisende Vorrichtung zur Überwachung einer Lampeneinheit, insbesondere einer zur Bestrahlung von Prüfobjekten bei der Magnetpulver- und Farbeindringprüfung eingesetzten Ultraviolett-Leuchte.The invention relates to a device having an electrical measuring voltage source for monitoring a lamp unit, in particular an ultraviolet lamp used for irradiating test objects in magnetic powder and color penetration testing.

Es ist bereits bekannt, bei der zerstörungsfreien Prüfung von aus ferromagnetischem Metall bestehenden Werkstücken, insbesondere bei ihrer Prüfung auf Oberflächenrisse, die stationär gelagerten oder kontinuierlich bewegten Werkstücke mit einer fluoreszierenden Suspension zu besprühen, die magnetisierbare Partikelchen (Eisenpulver) enthält, dann die Werkstücke einem vorbestimmt starken und ggfs. entsprechend ausgerichtetem Magnetfeld auszusetzen und durch eine Ultraviolett-Leuchte (UV-Leuchte) oder eine Lampe mit anderer spektraler Zusammensetzung auszuleuchten. Durch die Ausrichtung des Magnetpulvers in den Rissen wird der jeweilige Verlauf, die Menge oder die Größe der Oberflächenrisse sichtbar gemacht, durch die prüfende Person visuell beobachtet und beurteilt oder die Rißanzeige wird automatisch ausgewertet.It is already known, in the non-destructive testing of workpieces made of ferromagnetic metal, in particular when testing for surface cracks, to spray the stationary or continuously moving workpieces with a fluorescent suspension which contains magnetizable particles (iron powder), then the workpieces are predetermined exposed to a strong and possibly aligned magnetic field and illuminated by an ultraviolet lamp (UV lamp) or a lamp with a different spectral composition. By aligning the magnetic powder in the cracks, the respective course, the amount or the Size of the surface cracks made visible, visually observed and assessed by the test person or the crack indicator is automatically evaluated.

Ebenfalls ist bekannt, bei der Farbeindringprüfung nichtferromagnetischer Werkstoffe eine fluoreszierende Flüssigkeit zu verwenden, die in vorhandene Oberflächenrisse bzw. -poren eindringt, um unter UV-Beleuchtung die Fehlstellen zu beobachten. Die z.B. mit einem Halogenbrenner als Lichtquelle versehene UV-Leuchte ist jedoch im Laufe des Betriebes Intensitätsverlusten ausgesetzt, die hauptsächlich auf dem Leistungsverlust des UV-Brenners oder auf der Verschmutzung des Reflektors bzw. des Filter- oder Lampenglases beruhen. Die Verschmutzung des Filterglases (bzw. des Reflektors) ist eine besonders häufige Ursache für den Intensitätsverlust. Deshalb ist man bestrebt, den Reflektorraum weitgehend staubdicht auszuführen.It is also known to use a fluorescent liquid in the color penetration test of non-ferromagnetic materials, which penetrates into existing surface cracks or pores in order to observe the defects under UV illumination. The e.g. However, a UV lamp provided with a halogen burner as a light source is exposed to intensity losses during operation, which are mainly due to the loss of power of the UV burner or to the contamination of the reflector or the filter or lamp glass. Contamination of the filter glass (or the reflector) is a particularly common cause of the loss of intensity. Therefore, efforts are made to make the reflector space largely dust-tight.

Auch ist es bekannt, ein Einlegefach für einen flachen Glasfilter so vorzusehen, daß der Filter auswechselbar ist. Trotz vieler Vorsichtsmaßnahmen ist und bleibt es aber angebracht, die objektiven Intensitätswerte der Leuchte von Zeit zu Zeit zu Überprüfen. Zu berücksichtigen ist, daß die Zahl der gefundenen Rißanzeigen wesentlich von der UV-Intensität abhängt.It is also known to provide an insert compartment for a flat glass filter so that the filter can be replaced. Despite many precautionary measures, it is and remains appropriate to check the objective intensity values of the lamp from time to time. It should be taken into account that the number of crack indicators found depends largely on the UV intensity.

Um genaue und reproduzierbare Werte bei der Prüfung beibehalten zu können, muß man sicher den Zeitpunkt wissen, wann der Brenner auszuwechseln und/oder das Filterglas zu reinigen sind. Zwar ist es bekannt, diese Prüfung durch ein besonderes Intensitätsmeßgerät gerät von Zeit zu Zeit durchzuführen; hierfür ist das Gerät mit einer Sonde versehen, die im vorbestimmten Abstand zum Filterglas angebracht ist. Allerdings wird hier eine separate Meßeinrichtung mit zugehörigem Aufwand erforderlich, die außerdem in der Regel am Prüfort selbst nicht zur Verfügung steht.In order to be able to maintain exact and reproducible values during the test, one must certainly know the time when the burner has to be replaced and / or the filter glass has to be cleaned. It is known that this test is carried out using a special intensity measuring device implement from time to time; for this purpose the device is provided with a probe which is attached at a predetermined distance from the filter glass. However, a separate measuring device with associated effort is required here, which is also generally not available at the test site itself.

Gemäß US-A-4 974 126 ist eine Lampe bekannt, die eine Glühbirne als Brenner, einen darüber angeordneten Schirm und eine Solarzelle aufweist, wobei diese Teile durch einLampengehäuse abgestützt sind. Die innerhalb des Schirmes sowie in kleiner Entfernung von der Glühbirne angeordnete Solarzelle dient zum Nachladen einer, einen Lüfter antreibenden Batterie. Ein verschmutzbares Filterglas befindet sich nicht zwischen der Glühbirne und der Solarzelle.According to US-A-4 974 126 a lamp is known which has a light bulb as a burner, a screen arranged above it and a solar cell, these parts being supported by a lamp housing. The solar cell arranged inside the screen and at a short distance from the light bulb is used to recharge a battery that drives a fan. A dirty filter glass is not between the light bulb and the solar cell.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, so wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, das Verfahren zur Überwachung einer Lampeneinheit zu vereinfachen und die ständige Verfügbarkeit der Meßvorrichtung in besonders einfacher Weise zu gewährleisten.The invention seeks to remedy this. The invention, as characterized in the claims, solves the problem of simplifying the method for monitoring a lamp unit and ensuring the constant availability of the measuring device in a particularly simple manner.

Vorteilhafte Ausgestaltungen sind in den abhängigen Ansprüchen dargestellt.
Durch die Erfindung erreichte Vorteile sind im wesentlichen darin zu sehen, daß man nicht mehr davon abhängig ist, ob das Intensitätsmeßgerät gerade greifbar ist oder nicht. Man braucht auch nicht den vorgeschriebenen Abstand zwischen Sonde und Filterglas für den Einzelfall einzujustieren, was Zeit in Anspruch nimmt. Gerade bei größeren Leuchten, insbesondere UV-Leuchten, ist die Anordnung mit der notwendigen Anzahl der Solarzuellen, die die ständige Überwachung durchführt, gewährleistet.Advantageous refinements are presented in the dependent claims.
Advantages achieved by the invention are essentially to be seen in the fact that one is no longer dependent on whether the intensity measuring device is just tangible or not. It is also not necessary to adjust the prescribed distance between the probe and the filter glass for the individual case, which takes time takes. In the case of larger lights, in particular UV lights, the arrangement with the necessary number of solar cells, which is carried out by the constant monitoring, is guaranteed.

Die Erfindung kann so ausgestaltet werden, daß sich eine vorteilhafte Vereinfachung dadurch ergibt, daß durch einen Haftmagneten die Überwachungsgruppe, bestehend aus den Solarzellen, dem Sensor und/oder der zugehörigen Elektronik, an dem aus Metallblech bestehenden Lampengehäuse befestigt ist.The invention can be designed in such a way that an advantageous simplification results from the fact that the monitoring group, consisting of the solar cells, the sensor and / or the associated electronics, is attached to the lamp housing consisting of sheet metal by means of a holding magnet.

Eine Erfindungsvariante sieht vor, daß die Solarzellen und das Sensorelement an der Außenseite des scheiben- oder plattenförmigen Lampen- oder Filterglases angeordnet sind.
Eine weitere Ausgestaltung sieht vor, daß die zugehörige Leuchte, insbesondere eine UV-Leuchte, mit mindestens einer Aufhängevorrichtung bzw. einer Tragschiene stationär bzw. verschiebbar in Verbindung steht.One variant of the invention provides that the solar cells and the sensor element are arranged on the outside of the disk-shaped or plate-shaped lamp or filter glass.
A further embodiment provides that the associated light, in particular a UV light, is connected in a stationary or displaceable manner to at least one suspension device or a mounting rail.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen erläutert. Es zeigen:

  • Figur 1, perspektivisch, eine Leuchte mit dem Gehäuse, dem flachen Filterglas und einer Aufhängeeinrichtung;
  • Figur 2 eine schematische Stirnansicht im Inneren der Leuchte;
  • Figur 3 schematisch eine Seitenansicht mit Darstellung der gegenseitigen Anordnung des Brenners, des Filterglases und eines Bausatzes, der das Sensorelement und die Solarzellen trägt;
  • Figur 4 eine Draufsicht auf Figur 3, wiederum schematisch.
In the following, the invention will be explained with reference to drawings showing only one embodiment. Show it:
  • Figure 1, in perspective, a lamp with the housing, the flat filter glass and a suspension device;
  • Figure 2 is a schematic end view inside the lamp;
  • Figure 3 schematically shows a side view showing the mutual arrangement of the burner, the filter glass and a kit that carries the sensor element and the solar cells;
  • Figure 4 is a plan view of Figure 3, again schematically.

Ein Gehäuse 10 der Leuchte, vgl. Fig. 1, 2, kann durch Aufhängeösen 11 und Kettenglieder stationär oder auch verschiebbar an einer Tragschiene odgl. befestigt werden. Die zu prüfenden Werkstücke befinden sich im Sinne der Fig. 1 unterhalb eines Flachglasfilters 12. Die Leuchte ist mit einem Kühlgebläse 14 versehen und kann seitliche Kammern 16 aufweisen, so daß über untere Schlitze 17 angesaugte Kühlluft durch diese Kammern aufwärts strömt und durch obere Schlitze 18 mit Hilfe des Kühlgebläses 14 nach außen wieder abgeführt wird. Diese Art der Kühlung ist bekannt. Ein Brenner 19, z.B. Halogenbrenner, der als Lichtquelle dient, befindet sich etwa in der Mitte der Leuchte und ausgerichtet durch einen Reflektor 15, z.B. eines konkaven Spiegels aus Metallblech, fällt das Licht durch das Flachglasfilter 12 auf die unteren, hier nicht dargestellten Werkstücke. Ein Einlegerahmen 13 dient zum leichten Auswechseln des verschmutzten Filterglases.A housing 10 of the lamp, cf. Fig. 1, 2, or the like by hanging eyes 11 and chain links stationary or slidably on a mounting rail. be attached. The workpieces to be tested are located below a flat glass filter 12 in the sense of FIG. 1. The lamp is provided with a cooling fan 14 and can have lateral chambers 16 so that cooling air drawn in via lower slots 17 flows upward through these chambers and through upper slots 18 is discharged to the outside again with the aid of the cooling fan 14. This type of cooling is known. A burner 19, for example a halogen burner, which serves as a light source, is located approximately in the middle of the lamp and aligned by a reflector 15, for example a concave mirror made of sheet metal, the light falls through the flat glass filter 12 onto the lower workpieces, not shown here. An insert frame 13 is used for easy replacement of the dirty filter glass.

Die Einzelheiten der Überwachungsvorrichtung sind Fig. 3 und 4 zu entnehmen. Auf der Außenseite, d.h. der dem zu prüfenden Werkstück zugewandten Seite des Flachglasfilters 12 befindet sich ein Sensorelement 21 für den vorbestimmten Spektralbereich. Bei Verwendung einer UV-Leuchte ist das Sensorelement 21 auf die Wellenlänge 365 Nanometer besonders empfindlich. Die Erfindung ist allerdings nicht auf diesen Wellenlängenbereich eingeschränkt. Mit dem Sensorelement ist ein oder sind mehrere Solarzellen 20 elektrisch in Verbindung. Diese Bauteile sind, vgl. Fig. 1, vorzugsweise in einem Eckbereich des Flachglasfilters 12 bzw. des Gehäuses 10 angeordnet. Sie sind vorteilhaft auf einer Halteplatte odgl. 22 befestigt, die auch einen Haftmagneten 23 und die zugehörige Elektronikeinheit 24 enthält. Die Elektronikeinheit 24 steht mit der oder den Solarzellen 20 in Verbindung und kann auch ein akustisches oder visuelles Anzeigegerät 25 für die Leuchtenüberwachung enthalten. Das zugehörige Sicht- bzw. Anzeigefeld 25a kann die einer Leuchtskala sein, auf der LED-Elemente optisch grafisch oder digital anzeigen, daß außen hinter dem Flachglasfilter 12 eine hinreichende Lichtintensität des Brenners 19 vorhanden ist. Durch die Halteplatte 22 ist ein ganzer Bausatz, bestehend aus den Teilen 21, 23, 24, insbesondere als vorgefertigter Bausatz, leicht am Gehäuse der Leuchte zu befestigen bzw. wieder zu lösen. Die Anzeigeskala kann auch, mit vergrößerten Symbolen, getrennt von der Elektronik auf einem separaten Bildschirm dargestellt werden.The details of the monitoring device are shown in FIGS. 3 and 4. On the outside, ie the side of the flat glass filter 12 facing the workpiece to be tested, there is a sensor element 21 for the predetermined spectral range. When using a UV light, the sensor element 21 is particularly sensitive to the wavelength of 365 nanometers. However, the invention is not restricted to this wavelength range. One or more solar cells 20 are electrically connected to the sensor element. These components are, cf. 1, preferably arranged in a corner area of the flat glass filter 12 or the housing 10. They are advantageous or the like on a holding plate. 22 attached, which also contains a holding magnet 23 and the associated electronics unit 24. The electronics unit 24 is connected to the solar cell (s) 20 and can also contain an acoustic or visual display device 25 for monitoring the lights. The associated viewing or display field 25a can be that of a light scale on which LED elements optically graphically or digitally indicate that there is sufficient light intensity of the burner 19 on the outside behind the flat glass filter 12. Through the holding plate 22, an entire kit consisting of the parts 21, 23, 24, in particular as a prefabricated kit, can be easily attached to the housing of the lamp or closed again to solve. The display scale can also be shown separately from the electronics on a separate screen with enlarged symbols.

Da für die Solarzellen ein relativ geringer Weißlichtanteil zur Versorgung ausreicht, erneuern sich die Zellen selbst während des Betriebes. Man ist auf besondere Maßnahmen zur Wiedererneuerung nicht angewiesen. Ein separates Intensitäts-Meßgerät entfällt genauso wie der separate Sensor. Dabei ist das Sensorelement 21 in einem festen Abstand relativ zum Filterglas einjustiert. Die ständige Überwachung, z.B. in einem bestimmten Sicht- oder Anzeigefeld 25a der Elektronikeinheit 24 stellt in einfacher Weise sicher, daß eine Verschmutzte Filterscheibe zeitig ausgewechselt wird: Somit werden Fehlauswertungen, ob optisch oder automatisch, verringert. Die gleichen Vorteile werden hinsichtlich der Überwachung des Brenners erreicht: Bei Abfall der Brennerleistung unter eine vorbestimmte Grenze wird dieser gleichfalls im Sichtfeld der Elektronik 25a angezeigt und wiederum wird schneller als bisher das Auswechseln des Brenners bzw. der Lampe zum richtigen Zeitpunkt möglich.Since a relatively low proportion of white light is sufficient for the solar cells, the cells renew themselves during operation. There is no need for special measures for renewal. A separate intensity measuring device is eliminated, as is the separate sensor. The sensor element 21 is adjusted at a fixed distance relative to the filter glass. Constant monitoring, e.g. in a certain field of view or display 25a of the electronics unit 24 ensures in a simple manner that a soiled filter disk is exchanged at an early stage: false evaluations, whether optical or automatic, are thus reduced. The same advantages are achieved with regard to monitoring the burner: if the burner output drops below a predetermined limit, this is also displayed in the field of view of the electronics 25a and, in turn, the burner or the lamp can be replaced at the right time more quickly than before.

Diese Erfindung ist nicht nur für die Überwachung von UV-Leuchten geeignet, sondern überall dort, wo mit dem Abfall der Lichtintensität bzw. einer selektiven Lichtintensität in einem optischen Strahlengang gerechnet werden kann, also zur Überwachung von beliebigen Lampeneinheiten schlechthin, vorzugsweise (aber nicht ausschließlich) in Verbindung mit einem Glasfilter bzw. auch allein zur Überwachung der Betriebstüchtigkeit eines bestrahlten Filters. Die Erfindung ist anwendbar sowohl für stationäre, aber im Einzelfall auch für tragbare oder handbetätigte Lampen. Hierzu gehören auch die verschiedenen Blitzlampen, die mit flachen Glasscheiben, Prismen und/oder Linsen versehen sein können.This invention is not only suitable for the monitoring of UV lamps, but wherever the decrease in light intensity or a selective light intensity in an optical beam path can be expected, i.e. for monitoring any lamp units par excellence, preferably (but not exclusively) ) in connection with a glass filter or only for monitoring the operational efficiency of an irradiated one Filters. The invention is applicable both for stationary, but in individual cases also for portable or hand-operated lamps. This also includes the various flash lamps, which can be provided with flat glass panes, prisms and / or lenses.

Claims (6)

  1. Device for monitoring a lamp unit, comprising an electrical source of measuring voltage and a lamp unit, wherein the lamp unit includes at least one burner (19) as the light source, a flat filter glass (12) and a lamp housing (10) therefor, and is more especially utilisable for the illumination of test objects when testing magnetic powders or colour penetration,
    characterised in that one or a plurality of solar cells (20) is or are provided on the lamp housing (10, 22, 13) itself as the source of measuring voltage, and is or are electrically connected to one or a plurality of sensor elements (21), which are sensitive to a pre-determined spectrum range, the sensor element (21) being disposed at a fixed spacing relative to the filter glass (12) and being disposed on the outer surface of the filter glass (12).
  2. Device according to claim 1, characterised in that the solar cell (20) or the solar cells (20) is or are disposed on the outer surface of the disc-shaped filter glass (12) remote from the burner (19).
  3. Device according to claim 1 or 2, characterised in that the solar cell (20) or the solar cells (20), the sensor element (21) or the sensor elements (21), an associated electronic unit (24) and/or an indicator (25) are combined to form one electrical assembly, and the assembly is rigidly or detachably mounted on one part of the lamp housing (10).
  4. Device according to one of the preceding claims, characterised in that the solar cell (20) or the solar cells (20), the sensor element (21) or the sensor elements (21) and/or the associated electronic unit (24) are mounted on one part of the lamp housing (10) by means of at least one adhesive magnet (23).
  5. Device according to one of the preceding claims, characterised in that the burner is a flash lamp.
  6. Device according to one of the preceding claims, characterised in that the solar cell (20) or the solar cells (20), the sensor element (21) or the sensor elements (21) and/or the associated electronic unit (24) is or are disposed in a corner region of the flat filter glass (12).
EP91115173A 1990-04-25 1991-09-09 Arrangement for monitoring a lamp, comprising a voltage source for electrical measurement Expired - Lifetime EP0531557B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4013133A DE4013133C2 (en) 1990-04-25 1990-04-25 Lamp monitoring device with solar cell (s), in particular for a UV light for irradiating test objects during magnetic powder or paint penetration testing

Publications (2)

Publication Number Publication Date
EP0531557A1 EP0531557A1 (en) 1993-03-17
EP0531557B1 true EP0531557B1 (en) 1995-06-07

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EP91115173A Expired - Lifetime EP0531557B1 (en) 1990-04-25 1991-09-09 Arrangement for monitoring a lamp, comprising a voltage source for electrical measurement

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004292B (en) * 1954-03-26 1957-03-14 Siemens Ag As a table or hanging lamp, in particular a lamp with a xenon high-pressure discharge lamp designed as a color test device
FR2494435A1 (en) * 1980-11-19 1982-05-21 Electricite De France Remote indication of fall-off of output of mercury arc lamp - esp. for drying inks or paints, may use PVC sheathed optical cable link
US4563589A (en) * 1984-01-09 1986-01-07 Scheffer Herbert D Ultraviolet curing lamp device
GB8510426D0 (en) * 1985-04-24 1985-05-30 Hanovia Ltd Radiation sensor
GB8513171D0 (en) * 1985-05-24 1985-06-26 Still & Sons Ltd W M Water purifiers
US4974126A (en) * 1989-12-14 1990-11-27 Hwang Feng Lin Lamp with power source supply for fan

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DE4013133C2 (en) 1996-09-26
DE4013133A1 (en) 1991-10-31
EP0531557A1 (en) 1993-03-17

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