WO2004083837A1 - Arrangement for measuring the dew point spread - Google Patents

Arrangement for measuring the dew point spread Download PDF

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Publication number
WO2004083837A1
WO2004083837A1 PCT/EP2004/002706 EP2004002706W WO2004083837A1 WO 2004083837 A1 WO2004083837 A1 WO 2004083837A1 EP 2004002706 W EP2004002706 W EP 2004002706W WO 2004083837 A1 WO2004083837 A1 WO 2004083837A1
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WO
WIPO (PCT)
Prior art keywords
measuring
arrangement according
dew point
handle
infrared radiation
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PCT/EP2004/002706
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German (de)
French (fr)
Inventor
Patrick Zahn
Original Assignee
Testo Ag
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Publication of WO2004083837A1 publication Critical patent/WO2004083837A1/en

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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
    • G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
    • 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
    • G01J5/0265—Handheld, portable
    • 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
    • G01J5/07—Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
    • 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
    • G01J5/0846—Optical arrangements having multiple detectors for performing different types of detection, e.g. using radiometry and reflectometry channels
    • 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
    • G01J5/0896—Optical arrangements using a light source, e.g. for illuminating a surface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point

Definitions

  • the invention relates to an arrangement for measuring the dew point, the type specified in the preamble of claim 1.
  • the dew point is the temperature at which the gas in a gas-steam mixture is just saturated with steam. Below the dew condensation occurs, ie steam goes into the solid phase on 'and is reflected in
  • the dew point distance is the difference between the current surface temperature and the dew point explained above.
  • the dew point distance measurement is carried out using two different methods.
  • the user must determine the dew point of the room air from the measured relative air humidity and the air temperature and measure the surface temperature of the measurement object with a separate temperature measuring device.
  • Temperature measuring devices are used either as contact thermometers or non-contact infrared radiation measuring devices.
  • the disadvantage of this method is that the user has to calculate the dew point distance, ie the difference between the measured wall temperature and the calculated dew point, and does not automatically receive an alarm message.
  • the use of two different measuring devices is cumbersome.
  • the user has a moisture measuring device at his disposal that uses his own computer to automatically determine the dew point of the room air from the measured relative humidity and the air temperature.
  • the surface temperature is measured with an existing contact thermometer so that the dew point distance can be displayed directly with this device.
  • the disadvantage of this method is that the surface temperature must be measured with a contact thermometer, the handling of which is particularly important for large-sized measuring objects, e.g. B. large wall areas, high-altitude measuring points, cumbersome and time-consuming.
  • the present invention has for its object to provide an arrangement which works according to the second-mentioned method and has the features of the type specified in the preamble of claim 1 ', in which, however, the measurement of the surface temperature of the measurement object is simpler and faster and the Unlike the first method, users only have to operate one device.
  • a particularly simple and quick handling of the measurement arrangement results if, according to claim 2 or 3, the device is combined with a projector or light mark generator optically marking the measurement spot of the infrared radiation sensor.
  • the user can scan the surface of the measurement object, the dew point distance in the device being continuously calculated and displayed for each measurement point.
  • the use of the device is particularly convenient if, as proposed with claim 4, it is equipped with a device for generating an acoustic or visual alarm message, which generates a signal when the value falls below an adjustable dew point. Since the device optically marks the respective measuring spot, the user immediately recognizes at which point of the measuring object the dew point distance is critically undershot. A very handy device results if its housing, as proposed with claim 5, is designed like a gun.
  • the sensors used for moisture and temperature measurement are preferably detachably attached to the device handle in an air-flowed carrier tube.
  • the function switch is also simulated according to claim 9, the pistol trigger, whereby the handling is simplified.
  • the display, the circuit board for the computer and further function switches are arranged in or on the handle in an ergonomically advantageous manner.
  • a contact sensor can also be connected to the device according to the invention according to claim 13 via an electrical cable.
  • the object of the invention is explained below with reference to a preferred embodiment which is illustrated in the drawing.
  • the drawing shows the device 10 according to the invention in longitudinal section with a schematically indicated measurement object, namely a wall 20.
  • the housing of the device 10 is in the manner of a gun with a handle 10a and measuring head 10b, which is connected to the gun barrel. is similar, and designed with function switch 18 designed in the manner of the pistol trigger.
  • An infrared radiation measuring transducer 11 is arranged centrally in the measuring head 10b.
  • B a wall, generated heat radiation detected.
  • the measuring spot of the infrared radiation measuring sensor is marked in the area F by means of laser beams L on the measuring object 20.
  • the laser beams L are generated with laser diodes 12, which concentrically surround the sensor 11.
  • the temperature sensor 13 and the humidity sensor 14 for detecting air temperature and humidity are arranged in a carrier tube 15 through which air flows.
  • the carrier tube 15 is detachably connected to the handle 10a, so that the carrier tube 15 with the sensors 13 and 14 can be easily removed for repair, cleaning and replacement purposes.
  • the function switch 18 is arranged on the handle 10a in the manner of a pistol trigger lever 18, so that it can be actuated with one finger by the user, who encompasses the handle 10a like a pistol with one hand.
  • a circuit board 16 which carries the components of the computer or the electronics, is arranged within the handle 10a.
  • the display 17 On which all important measurement data, such as measured dew point distance, dew point temperature, maximum and minimum dew point distance, humidity, maximum and minimum humidity and room temperature can be displayed.
  • important measurement data such as measured dew point distance, dew point temperature, maximum and minimum dew point distance, humidity, maximum and minimum humidity and room temperature can be displayed.
  • there are further function switches below the display with which the display can be switched from dew point measurement to humidity and room temperature measurement.
  • a four-line, illuminated display is expediently provided for the display.
  • a contact sensor (not shown) is provided, which can be electrically connected to the device 10 via a cable.

Abstract

The invention relates to a compact appliance for automatically measuring the dew point spread, said appliance comprising infrared radiation sensors (11) for measuring the surface temperature in a contactless manner. The measuring spot of said sensors (11) is optically marked by laser beams (2) produced by laser diodes (12). The infrared radiation measuring device (11), the laser diodes (12), the temperature and humidity sensors (13, 14), the printed circuit board (16) embodied as a calculator, and the display (17) are ergonomically mounted in the pistol-type housing of the appliance (10).

Description

Beschreibungdescription
Anordnung zur Messung des TaupunktabStandesArrangement for measuring the dew point distance
Die Erfindung betrifft eine Anordnung zur Messung des TaupunktabStandes, der im Oberbegriff des Patentanspruchs 1 angegebenen Art. Unter dem Taupunkt versteht man die Temperatur, bei der in einem Gas-Dampf-Gemisch das Gas mit Dampf gerade gesättigt ist. Unterhalb des Taupunktes erfolgt Kondensation, d. h. Dampf geht in die feste Phase über' und schlägt sich inThe invention relates to an arrangement for measuring the dew point, the type specified in the preamble of claim 1. The dew point is the temperature at which the gas in a gas-steam mixture is just saturated with steam. Below the dew condensation occurs, ie steam goes into the solid phase on 'and is reflected in
Form von Flüssigkeitströpfchen nieder. Der Taupunktabstand ist die Differenz zwischen der aktuellen Oberflächentemperatur und dem oben erläuterten Taupunkt .Form of liquid droplets. The dew point distance is the difference between the current surface temperature and the dew point explained above.
Für viele Anwendungen ist die Beobachtung des Taupunktabstandes wichtig, um rechtzeitig feststellen zu können, dass die Gefahr des Feuchtigkeitsniederschlages besteht .For many applications, it is important to observe the dew point distance in order to be able to determine in good time that there is a risk of moisture precipitation.
Das ist z. B. bei der Beschichtung von Oberflächen, z. B. beim Lackieren, wichtig, da bei Unterschreiten des Taupunktabstandes wegen des Feuchtigkeitsniederschlages die Qualität der Beschichtung leidet. Auch für die richtige Klimatisierung, nämlich Beheizung und Belüftung, von Wohnräumen, insbesondere im Winter, ist die Beobachtung des Taupunktabstandes wichtig. Er- höht sich der Feuchtegehalt der Luft z. B. durch die Anwesenheit von Personen im Raum, dann steigt der Taupunkt der Raumluft, also die Temperatur, bei der Kondensat ausgeschieden wird. Überschreitet der Taupunktwert die Wandtemperatur, dann bildet sich Schwitzwasser an der Wand. Wird der Raum zwischen- zeitlich nicht mehr beheizt und wiederholt sich dieser Vorgang öfter, kommt es sehr rasch zu Schimmelbildungen. In vielen weiteren Bereichen ist die Beobachtung des Taupunkt- abstandes wichtig.That is e.g. B. in the coating of surfaces, for. B. when painting, important because the quality of the coating suffers from falling below the dew point distance due to the moisture precipitation. Observing the dew point distance is also important for proper air conditioning, namely heating and ventilation, of living spaces, especially in winter. The moisture content in the air increases. B. by the presence of people in the room, then the dew point of the room air, i.e. the temperature at which condensate is excreted. If the dew point exceeds the wall temperature, condensation forms on the wall. If the room is no longer heated and this process is repeated more often, mold will form very quickly. Monitoring the dew point distance is important in many other areas.
Nach dem heutigen Stand der Technik erfolgt die Taupunktab- Standsmessung mit zwei unterschiedlichen Methoden.According to the current state of the art, the dew point distance measurement is carried out using two different methods.
Nach der ersten Methode muss der Anwender aus der gemessenen relativen Luftfeuchte und der Luf temperatur den Taupunkt der Raumluft ermitteln und mit einem gesonderten Temperaturmessge- rät die Oberflächentemperatur des Messobjektes messen. AlsAccording to the first method, the user must determine the dew point of the room air from the measured relative air humidity and the air temperature and measure the surface temperature of the measurement object with a separate temperature measuring device. As
Temperaturmessgerät dienen hierbei entweder Kontaktthermometer oder berührungslos arbeitende Infrarotstrahlungsmessgeräte.Temperature measuring devices are used either as contact thermometers or non-contact infrared radiation measuring devices.
Nachteil dieser Methode ist, dass der Anwender den Taupunktab- stand, also die Differenz zwischen gemessener Wandtemperatur und errechnetem Taupunkt, selbst berechnen muss und nicht automatisch eine Alarmmeldung erhält. Außerdem ist die Benutzung von zwei unterschiedlichen Messgeräten umständlich.The disadvantage of this method is that the user has to calculate the dew point distance, ie the difference between the measured wall temperature and the calculated dew point, and does not automatically receive an alarm message. In addition, the use of two different measuring devices is cumbersome.
Nach der zweiten Methode steht dem Anwender ein Feuchtemessgerät zur Verfügung, das mittels eines eigenen Rechners aus der gemessenen relativen Luftfeuchte und der Lufttemperatur selbsttätig den Taupunkt der Raumluft ermittelt. Mit einem weiterhin vorhandenen Kontaktthermometer wird die Oberflächen- temperatur gemessen, so dass mit diesem Gerät der Taupunktabstand direkt angezeigt werden kann.According to the second method, the user has a moisture measuring device at his disposal that uses his own computer to automatically determine the dew point of the room air from the measured relative humidity and the air temperature. The surface temperature is measured with an existing contact thermometer so that the dew point distance can be displayed directly with this device.
Nachteilig bei dieser Methode ist, dass die Oberflächentemperatur mit einem Kontaktthermometer zu messen ist, dessen Hand- habung insbesondere bei groß dimensionierten Messobjekten, z. B. großen Wandflächen, hoch gelegenen Messstellen, umständlich und zeitraubend ist . Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Anordnung zu schaffen, die nach der zweitgenannten Methode arbeitet und die Merkmale des im Oberbegriff des Anspruchs 1 angegebenen Art aufweist', bei welcher jedoch auch die Messung der Oberflächentemperatur des Messobjektes einfacher und schneller ist und der Benutzer anders als bei der erstgenannten Methode nur ein einziges Gerät zu bedienen hat.The disadvantage of this method is that the surface temperature must be measured with a contact thermometer, the handling of which is particularly important for large-sized measuring objects, e.g. B. large wall areas, high-altitude measuring points, cumbersome and time-consuming. The present invention has for its object to provide an arrangement which works according to the second-mentioned method and has the features of the type specified in the preamble of claim 1 ', in which, however, the measurement of the surface temperature of the measurement object is simpler and faster and the Unlike the first method, users only have to operate one device.
Gelöst ist diese Aufgabe mit der Erfindung gemäß Anspruch 1 dadurch, dass alle Messvorrichtungen und der Rechner in ein kompaktes Gerät integriert sind, wobei in an sich bekannter Weise zur Oberflächentemperaturmessung ein Infrarotstrahlungsmessgerät vorgesehen ist, mit dessen in dem Gerät angeordneten Infrarotstrahlungssensoren die Oberflächentemperatur des Mess- Objektes berührungslos gemessen wird.This object is achieved with the invention according to claim 1 in that all measuring devices and the computer are integrated in a compact device, an infrared radiation measuring device being provided in a manner known per se for measuring the surface temperature, with the infrared radiation sensors arranged in the device determining the surface temperature of the measuring Object is measured without contact.
Eine besonders einfache und schnelle Handhabung der Messanordnung ergibt sich, wenn gemäß Anspruch 2 bzw. 3 das Gerät mit einem den Messfleck des Infrarotstrahlungssensor optisch mar- kierenden Projektor oder Lichtmarkenerzeuger kombiniert ist. Mit einem derartigen Gerät kann der Benutzer die Oberfläche des Messobjektes abtasten (scannen), wobei kontinuierlich für jeden Messpunkt der Taupunktabstand im Gerät berechnet und angezeigt wird.A particularly simple and quick handling of the measurement arrangement results if, according to claim 2 or 3, the device is combined with a projector or light mark generator optically marking the measurement spot of the infrared radiation sensor. With such a device, the user can scan the surface of the measurement object, the dew point distance in the device being continuously calculated and displayed for each measurement point.
Besonders komfortabel ist die Benutzung des Gerätes, wenn es, wie mit Anspruch 4 vorgeschlagen, mit einer Vorrichtung zur Erzeugung einer akustischen oder optischen Alarmmeldung, die bei Unterschreiten eines einstellbaren TaupunktabStandes ein Signal erzeugt, ausgestattet ist. Da das Gerät den jeweiligen Messfleck optisch markiert, erkennt der Benutzer sofort, an welcher Stelle des Messobjektes der Taupunktabstand in kritischer Weise unterschritten wird. Ein sehr handliches Gerät ergibt sich, wenn sein Gehäuse, wie mit Anspruch 5 vorgeschlagen ist, nach Art einer Pistole ausgebildet ist.The use of the device is particularly convenient if, as proposed with claim 4, it is equipped with a device for generating an acoustic or visual alarm message, which generates a signal when the value falls below an adjustable dew point. Since the device optically marks the respective measuring spot, the user immediately recognizes at which point of the measuring object the dew point distance is critically undershot. A very handy device results if its housing, as proposed with claim 5, is designed like a gun.
Bei dieser Konstruktion sind nach den Vorschlägen gemäß den Ansprüchen 6, 7 und 8 die der Feuchte- und Temperaturmessung dienenden Sensoren vorzugsweise in einem luftdurchströmten Trägerrohr am Gerätehandgriff lösbar angebracht.In this construction, according to the proposals according to claims 6, 7 and 8, the sensors used for moisture and temperature measurement are preferably detachably attached to the device handle in an air-flowed carrier tube.
Auch der Funktionsschalter ist gemäß Anspruch 9 dem Pistolenabzug nachgebildet, wodurch die Handhabung vereinfacht wird.The function switch is also simulated according to claim 9, the pistol trigger, whereby the handling is simplified.
Nach den Vorschlägen gemäß den Ansprüchen 10, 11 und 12 sind das Anzeigedisplay, die Leiterplatte für den Rechner sowie weitere Funktionsschalter im oder am Handgriff in ergonomisch günstiger Weise angeordnet.According to the proposals according to claims 10, 11 and 12, the display, the circuit board for the computer and further function switches are arranged in or on the handle in an ergonomically advantageous manner.
Soweit für Sonderfälle, z. B. bei Kontrolle metallischer Ober- flächen, die Ermittlung der Oberflächentemperatur nur durchAs far as for special cases, e.g. B. when checking metallic surfaces, the determination of the surface temperature only by
Kontaktmessung möglich ist, kann an das erfindungsgemäße Gerät gemäß Anspruch 13 auch ein Kontaktfühler über ein elektrisches Kabel angeschlossen werden.Contact measurement is possible, a contact sensor can also be connected to the device according to the invention according to claim 13 via an electrical cable.
Der Gegenstand der Erfindung ist nachstehend anhand eines bevorzugten Ausführungsbeispieles, das in der Zeichnung dargestellt ist, im Einzelnen erläutert. Die Zeichnung zeigt das erfindungsgemäße Gerät 10 im Längsschnitt mit schematisch angedeutetem Messobjekt, nämlich einer Wand 20.The object of the invention is explained below with reference to a preferred embodiment which is illustrated in the drawing. The drawing shows the device 10 according to the invention in longitudinal section with a schematically indicated measurement object, namely a wall 20.
Das Gehäuse des Gerätes 10 ist nach Art einer Pistole mit Handgriff 10a und Messkopf 10b, der mit dem Pistolenlauf ver- gleichbar ist, und mit nach Art des Pistolenabzugs gestalteten Funktionsschalter 18 ausgebildet.The housing of the device 10 is in the manner of a gun with a handle 10a and measuring head 10b, which is connected to the gun barrel. is similar, and designed with function switch 18 designed in the manner of the pistol trigger.
Zentral im Messkopf 10b angeordnet ist ein Infrarotstrahlungs- messaufnehmer 11, welcher die vom Messobjekt 20, z. B. einer Wand, erzeugten Wärmestrahlungen erfasst. Der Messfleck des Infrarotstrahlungsmessaufnehmers wird mittels Laser-Strahlen L auf dem Messobjekt 20 im Bereich F markiert. Die Laser- Strahlen L werden mit Laserdioden 12 erzeugt, welche den Mess- aufnehmer 11 konzentrisch umgeben. Bei einer derartigen Anordnung kann der Benutzer auch bei kontaktloser Messung ge- naustens beobachten, an welcher Stelle des Messobjektes die Messung erfolgt. So kann er durch Verschwenken des Gerätes 10 das Messobjekt 20 abscannen und auf diese Weise schnell und sicher den kritischen Punkt des kleinsten Taupunktabstandes ermitteln.An infrared radiation measuring transducer 11 is arranged centrally in the measuring head 10b. B. a wall, generated heat radiation detected. The measuring spot of the infrared radiation measuring sensor is marked in the area F by means of laser beams L on the measuring object 20. The laser beams L are generated with laser diodes 12, which concentrically surround the sensor 11. With such an arrangement, the user can also observe precisely at which point of the measurement object the measurement takes place, even in the case of contactless measurement. He can scan the measurement object 20 by swiveling the device 10 and in this way determine the critical point of the smallest dew point distance quickly and reliably.
Unterhalb des Messkopfes 10b sind in einem luftdurchströmten Trägerrohr 15 der Temperatursensor 13 und der Feuchtesensor 14 zur Erfassung von Lufttemperatur und Luftfeuchte angeordnet. Das Trägerrohr 15 ist mit dem Handgriff 10a lösbar verbunden, so dass zu Reparatur-, Reinigungs- und Austauschzwecken das Trägerrohr 15 mit den Sensoren 13 und 14 leicht entfernt werden kann.Below the measuring head 10b, the temperature sensor 13 and the humidity sensor 14 for detecting air temperature and humidity are arranged in a carrier tube 15 through which air flows. The carrier tube 15 is detachably connected to the handle 10a, so that the carrier tube 15 with the sensors 13 and 14 can be easily removed for repair, cleaning and replacement purposes.
Der Funktionsschalter 18 ist nach Art eines Pistolenabzugshebels 18 am Handgriff 10a angeordnet, so dass er vom Benutzer, welcher den Handgriff 10a wie eine Pistole mit einer Hand um- fasst, problemlos mit einem Finger, betätigt werden kann.The function switch 18 is arranged on the handle 10a in the manner of a pistol trigger lever 18, so that it can be actuated with one finger by the user, who encompasses the handle 10a like a pistol with one hand.
Innerhalb des Handgriffes 10a ist eine Leiterplatte 16 angeordnet, welche die Bauelemente des Rechners bzw. der Elektronik trägt. Schließlich befindet sich auf der Rückseite des Handgriffs 10a in Höhe des Messkopfes 10b das Anzeigedisplay 17, auf welchem alle wichtigen Messdaten, wie vor allem gemessener Taupunktabstand, Taupunkttemperatur, maximaler und minimaler Taupunktabstand, Feuchte, maximale und minimale Feuchte und Raumtemperatur angezeigt werden können. Zweckmäßigerweise befinden sich unterhalb des Anzeigedisplays weitere Funktionsschalter, mit welchen eine Umschaltung der Anzeige von Taupunktmessung auf Feuchte- und Raumtemperaturmessung erfolgen kann.A circuit board 16, which carries the components of the computer or the electronics, is arranged within the handle 10a. Finally located on the back of the Handle 10a at the level of the measuring head 10b, the display 17, on which all important measurement data, such as measured dew point distance, dew point temperature, maximum and minimum dew point distance, humidity, maximum and minimum humidity and room temperature can be displayed. Appropriately, there are further function switches below the display, with which the display can be switched from dew point measurement to humidity and room temperature measurement.
Für die Anzeige ist ein vierzeiliges, beleuchtetes Display zweckmäßigerweise vorgesehen.A four-line, illuminated display is expediently provided for the display.
Soweit metallische Oberflächen zu messen sind, ist ein nicht dargestellter Kontaktfühler vorgesehen, welcher mit dem Gerät 10 über ein Kabel elektrisch verbindbar ist. If metallic surfaces are to be measured, a contact sensor (not shown) is provided, which can be electrically connected to the device 10 via a cable.

Claims

Patentansprüche claims
1. Anordnung zur Messung des TaupunktabStandes, bestehend aus einer ersten Vorrichtung zur Messung der Luftfeuchte, aus einer zweiten Vorrichtung zur Messung der Lufttemperatur und aus einer dritten Vorrichtung zur Messung der Oberflächentemperatur des Messobjektes, insbesondere einer Wand, sowie einem Rechner, welcher aus Luftfeuchte und Lufttemperatur den Taupunkt und aus Taupunkt und Oberflächentem- peratur den Taupunktabstand ermittelt, welcher mit einem Messinstrument direkt angezeigt wird, d a d u r c h g e k e n n z e i c h n e t, dass alle Messvorrichtungen (11, 13, 14) und der Rechner (16) in ein kompaktes Gerät (10) integriert sind, wobei zur Oberflä- chentemperaturmessung ein Infrarotstrahlungsmessgerät vorgesehen ist, mit dessen in dem Gerät (10) angeordneten Infrarotstrahlungssensoren (11) die Oberflächentemperatur des Messobjektes (20) berührungslos gemessen wird.1. Arrangement for measuring the dew point distance, consisting of a first device for measuring the air humidity, a second device for measuring the air temperature and a third device for measuring the surface temperature of the measurement object, in particular a wall, and a computer which consists of air humidity and Air temperature determines the dew point and from dew point and surface temperature the dew point distance, which is displayed directly with a measuring instrument, characterized in that all measuring devices (11, 13, 14) and the computer (16) are integrated in a compact device (10), An infrared radiation measuring device is provided for the surface temperature measurement, with whose infrared radiation sensors (11) arranged in the device (10) the surface temperature of the measurement object (20) is measured without contact.
2. Anordnung nach Anspruch 1 , g e k e n n z e i c h n e t d u r c h einen Projektor, mit welchem der Messfleck für die Infrarotstrahlungssensoren (11) optisch markiert wird.2. Arrangement according to claim 1, g e k e n n z e i c h n e t d u r c h a projector with which the measurement spot for the infrared radiation sensors (11) is optically marked.
3. Anordnung nach Anspruch 2 , d a d u r c h g e k e n n z e i c h n e t, dass der Projektor aus Lichtlaserdioden (12) besteht, welche den Infrarotstrahlungsmessaufnehmer (11) konzentrisch umgeben.3. Arrangement according to claim 2, so that the projector consists of light laser diodes (12) which concentrically surround the infrared radiation measuring sensor (11).
4. Anordnung nach Anspruch 1, 2 oder 3, g e k e n n z e i c h n e t d u r c h eine Vorrichtung zur Erzeugung einer akustischen oder optischen Alarmmel- dung bei Unterschreiten eines einstellbaren Taupunktabstandes .4. Arrangement according to claim 1, 2 or 3, characterized by a device for generating an acoustic or visual alarm. when falling below an adjustable dew point distance.
5. Anordnung nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t, dass das Gehäuse des Gerätes (10) nach Art einer Pistole ausgebildet ist, in deren Handgriff (10a) der Rechner (16) und deren Messkopf (10b) der auf das Messobjekt (20) zu richtende Infrarotstrahlungsmessaufnehmer (11) angeordnet ist, wel- eher von Laserlicht erzeugenden Dioden (12) zur optischen Markierung des Messfleckes umgeben ist.5. Arrangement according to one of claims 1 to 4, characterized in that the housing of the device (10) is designed in the manner of a gun, in the handle (10a) of the computer (16) and the measuring head (10b) of the object ( 20) infrared radiation measuring sensor (11) to be directed, which is rather surrounded by laser light-producing diodes (12) for optically marking the measuring spot.
6. Anordnung nach Anspruch 5 , d a d u r c h g e k e n n z e i c h n e t, dass am Mess- köpf (10b) vorzugsweise unterhalb des Infrarotstrahlungsmessaufnehmers (11) Sensoren (13, 14) zur Feuchte- und Temperaturmessung derart angeordnet sind, dass sie von der zu messenden Luft weitgehend allseitig umgeben sind.6. Arrangement according to claim 5, characterized in that on the measuring head (10b) preferably below the infrared radiation measuring sensor (11) sensors (13, 14) for moisture and temperature measurement are arranged such that they are largely surrounded on all sides by the air to be measured ,
7. Anordnung nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t, dass die Sensoren (13, 14) zur Feuchte- und Temperaturmessung aus einem parallel zum Messkopf (10b) verlaufenden und nur mit Handgriff (10a) verbundenen, luftdurchströmten Trägerrohr (15) angeordnet sind.7. Arrangement according to claim 6, so that the sensors (13, 14) for moisture and temperature measurement are arranged from a carrier tube (15) that runs through air and runs parallel to the measuring head (10b) and is only connected with a handle (10a).
8. Anordnung nach Anspruch 7 , d a d u r c h g e k e n n z e i c h n e t, dass das Trägerrohr (15) mit Feuchte- und Temperatursensoren (13, 14) lösbar und austauschbar in den Handgriff (10a) eingesteckt ist . 8. Arrangement according to claim 7, characterized in that the carrier tube (15) with humidity and temperature sensors (13, 14) is detachably and interchangeably inserted in the handle (10a).
9. Anordnung nach einem der Ansprüche 5 bis 8, d a d u r c h g e k e n n z e i c h n e t, dass am Handgriff (10a) ein nach Art eines Pistolenabzugs ausgebildeter Schalter (18) zur Einschaltung der Messfunktion ange- ordnet ist.9. Arrangement according to one of claims 5 to 8, so that a switch (18) designed in the manner of a pistol trigger for switching on the measuring function is arranged on the handle (10a).
10. Anordnung nach einem der Ansprüche 6 bis 9, d a d u r c h g e k e n n z e i c h n e t, dass an der dem Benutzer zugewandten Rückseite des Handgriffes (10a) in Höhe des Messkopfes (10b) ein Anzeigedisplay (17) vorgesehen ist.10. Arrangement according to one of claims 6 to 9, so that a display display (17) is provided on the back of the handle (10a) facing the user at the level of the measuring head (10b).
11. Anordnung nach Anspruch 10, d a d u r c h g e k e n n z e i c h n e t, dass der Rechner auf einer im Handgriff (10a) montierten Leiterplatte (16) vorgesehen ist.11. The arrangement as claimed in claim 10, so that the computer is provided on a circuit board (16) mounted in the handle (10a).
12. Anordnung nach Anspruch 10 oder 11, d a d u r c h g e k e n n z e i c h n e t, dass unter- halb des Anzeigedisplays (17) auf der Rückseite des Handgriffs (10a) weitere Funktionsschalter vorgesehen sind.12. Arrangement according to claim 10 or 11, so that further function switches are provided beneath the display (17) on the back of the handle (10a).
13. Anordnung nach einem oder mehreren der Ansprüche 1 bis 12, g e k e n n z e i c h n e t d u r c h einen separaten Kontaktfühler, der zur kontaktierenden Temperaturmessung von metallischen Oberflächen über ein elektrisches Kabel mit dem Gerät (10) verbindbar ist. 13. Arrangement according to one or more of claims 1 to 12, a separate contact sensor which can be connected to the device (10) for contacting temperature measurement of metallic surfaces via an electrical cable.
PCT/EP2004/002706 2003-03-17 2004-03-17 Arrangement for measuring the dew point spread WO2004083837A1 (en)

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