DE845716C - Caloric radiation meter - Google Patents

Caloric radiation meter

Info

Publication number
DE845716C
DE845716C DEG3690A DEG0003690A DE845716C DE 845716 C DE845716 C DE 845716C DE G3690 A DEG3690 A DE G3690A DE G0003690 A DEG0003690 A DE G0003690A DE 845716 C DE845716 C DE 845716C
Authority
DE
Germany
Prior art keywords
radiation
temperature
measuring body
thermometer
measurement
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
Application number
DEG3690A
Other languages
German (de)
Inventor
Johannes Dr Georgi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEG3690A priority Critical patent/DE845716C/en
Application granted granted Critical
Publication of DE845716C publication Critical patent/DE845716C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00Measuring quantity of heat
    • G01K17/003Measuring quantity of heat for measuring the power of light beams, e.g. laser beams

Description

PATENTANSPRUCH: Kalorischer Strahlungsmesser für Sonne und andereWärmestrahlung, bei dem ein Strahlungsstrom von bestimmtem Querschnitt senkrecht auf die geschwärzte Fläche eines Meßkörpers auftreffend al>sorl>iert wird, woraus sich die Energie des Strahlungsstromes in absolutem Maß ,durclh die Erwärmung dieses Meßkörpers in der Zeiteinheit in Verbindung mit den sonstigen physikalischen Daten der jeweiligen Ausführung ergibt, dadurch gekennzeichnet, daß der während der Messung thermisch gut isolierte N,4eßkörper, zwecks rascher und vollständiger Temperaturangleichung an die Apparattemperatur, in der Ruhestellung mit den ihn umgeltenden Apparatteilen mehrfach größerer Maße in thermischem Kontakt steht. PATENT CLAIM: Caloric radiation meter for sun and other thermal radiation, in which a radiation flux of a certain cross-section perpendicular to the blackened one Surface of a measuring body hitting al> sorl> iert, from which the energy is derived of the radiation current in absolute measure, due to the heating of this measuring body in the time unit in connection with the other physical data of the respective Execution results, characterized in that the thermal during the measurement Well insulated N, 4 eating bodies, for the purpose of quick and complete temperature adjustment to the apparatus temperature, in the rest position with the apparatus parts surrounding it is in thermal contact several times larger.

Claims (1)

Zweck der Erfindung ist die Messung von Wärmestrahlung der Sonne und andererWärmestrahlungsquellen in absolutem Maß (cal. cm-2 min-1) in so einfacher Weise, daß solche Messungen nicht nur mit den Hilfsmitteln der wenigen großen Strahlungsolservatorien, sondern auch feldmäßig auf Expeditionen, entlegenen--Bergstationen usw. möglich sind, wobei der Eichwert jederzeit, auch nach Reparaturen, mit dem Meßgerät selbst nachprüfbar ist. The purpose of the invention is to measure thermal radiation from the sun and other heat radiation sources in absolute measure (cal. cm-2 min-1) in such a simple way Way that such measurements can be made not only with the aids of the few large but also possible in the field on expeditions, remote mountain stations, etc. the calibration value at any time, even after repairs, with the measuring device itself is verifiable. Bisher konnten für diesen Zweck nur Meßgeräte verwendet werden, deren Eichwert nicht die Möglichkeit einer Nachprüfung oder Wiedergewinnung nach Reparatur aufwies.So far only measuring devices could be used for this purpose Calibration value does not allow for re-examination or recovery after repair exhibited. Entsprechend dem Zweck eines Feldinstrumentes sollen hier alle Pyrheliometer mit temperaturkonstanten Bädern oder Flüssigkeitskalorimetern mit gleichmäßig strömendem oder sonstwie in Umlauf versetztem Inhalt außer Betracht bleiben. Andererseits kann für den angegebenen Zweck, wenn nicht anders möglich, eine geringere Meßgenauigkeit zugelassen werden. According to the purpose of a field instrument, all pyrheliometers should be used here with temperature-constant baths or liquid calorimeters with evenly flowing or any other content put into circulation will be disregarded. On the other hand, can for the stated purpose, if not otherwise possible, a lower measurement accuracy be allowed. Das Prinzip des Metallkalorimeters wurde bereits früher bei Pyrheliometermessungen benutzt. Hierbei trifft ein mit bekanntem Querschnitt ausgeblendeter Strahlungsstrom senkrecht auf die geeignet geformte, geschwärzte Oberfläche eines Metallklotzes oder Aleßkörpers und wird hier absorbiert. The principle of the metal calorimeter was used earlier in pyrheliometer measurements used. In this case, a radiation current with a known cross-section is masked perpendicular to the suitably shaped, blackened surface of a metal block or ally and is absorbed here. Aus der in hestimmter Zeit erfolgten Erwärmung des Meßkörpers in Verbindung mit seinem Wasserwert (Masse Spez. Wärme), der bestrahlten Fläche, dem Absorptionskoeffizienten und dem für die gleiche Zeitdauer gesondert .gemessenen Wärmeverlust des Meßkörpers durch Leitung, Strahlung und Konvektion ergibt sich die Energie des Strahlungsstromes in cal. cm-2min-1 (= o,o6g7 W cm-2).From the heating of the measuring body that took place at a certain time with its water value (mass specific heat), the irradiated area, the absorption coefficient and the separately .messened heat loss of the measuring body for the same period of time the energy of the radiation flow results from conduction, radiation and convection in cal. cm-2min-1 (= o, o6g7 W cm-2). Diesem Verfahren haftet auch bei höchster technischer Durchbildung der Nachteil an, daß die Abkühlung des Äleßkörpers vor einer neuen Strahlungsmessung auf die bekannte Umgebungstemperatur (Apparattemperatur) je nach der geforderten Angleichungsgeiiauigkeit längere Zeit in Anspruch nimmt (Größenordnung 15 bis 30 min.); ein voller Messungssatz, etwa bestehend aus einer Messung der ungefilterten oder Gesamtstrahlung, der Rotstrahlung und wieder der Gesamtstraklung erfordert daher nahezu 1 Stunde, während erfahrungsgemält ein .RI)stan(l von wenigen Älinuten erforderlich ist, um den oft raschen Änderungen der Strahlungsstärke zu folgen. This process adheres even to the highest technical level the disadvantage is that the outer body has to cool down before a new radiation measurement to the known ambient temperature (apparatus temperature) depending on the required Compliance takes a long time (order of magnitude 15 to 30 min.); a full set of measurements, for example consisting of a measurement of the unfiltered or total radiation, which requires red radiation and again the overall radiation therefore almost 1 hour, while experience has shown that an .RI) stan (1 of a few minutes is required to follow the often rapid changes in radiation intensity. Diesen Mangel behebt die Erfindung dadurch, daß der während der Messung thermisch isolierte Meßkörper nach Beendigung jeder Messung mit den ihn umgebenden, zu diesem Zweck absichtlich massig ausgebildeten Apparatteilen bekannter Temperatur in thermischem Kontakt steht und dadurch zu raschem und sicherem Wärmeaustausch gebracht wird, worauf der Kontakt wieder gelöst und der Meßkörper aufs neue delr Strahlung ausgesetzt wird. Hierdurch können Einzelmessungen in dem üblichen Zeitabstand von etwa 2 Minuten erfolgen. The invention overcomes this deficiency in that the during the measurement thermally insulated measuring body after each measurement with the surrounding, for this purpose, intentionally bulky apparatus parts of known temperature is in thermal contact and therefore enables rapid and reliable heat exchange is brought, whereupon the contact is released again and the measuring body again delr Exposure to radiation. This enables individual measurements to be carried out at the usual time interval of about 2 minutes. In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt. Hierbei ist der Meßkörper 1 in Meßstellung von der Umgebung bekannter Temperatur, nämlich den Apparatteilen 2, deren Temperatur mit Thermometer 3 oder elektrisch gemessen werden kann, thermisch gut isoliert, dagegen in der Ruhestellung I' zwecks Temperaturausgleiches an Teil 2 angepreßt. The drawing shows an embodiment of the subject matter of the invention shown. Here, the measuring body 1 is better known from the environment in the measuring position Temperature, namely the apparatus parts 2, whose temperature with thermometer 3 or can be measured electrically, thermally well insulated, but in the rest position I 'pressed against part 2 for temperature compensation. Weitere bekannte Teile der üblichen Strahlungsmesser sind den Strahlungsstrom begrenzende Blenden 4, Farbfilter 5 sowie der Verschluß 6. Die Erwärmung des Meßkörpers wird in üblicherWeise gemessen, z. B. durch Quecksilherthermometer, elektrische Thermo- oder Widerstandsthermometer oder nach dem Prinzip des Luftthermometers. Other well-known parts of the usual radiation meters are the radiation current limiting diaphragm 4, color filter 5 and the shutter 6. The heating of the measuring body is measured in the usual way, e.g. B. by mercury thermometer, electrical Thermometer or resistance thermometer or based on the principle of the air thermometer.
DEG3690A 1950-09-24 1950-09-24 Caloric radiation meter Expired DE845716C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG3690A DE845716C (en) 1950-09-24 1950-09-24 Caloric radiation meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG3690A DE845716C (en) 1950-09-24 1950-09-24 Caloric radiation meter

Publications (1)

Publication Number Publication Date
DE845716C true DE845716C (en) 1952-08-04

Family

ID=7117239

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG3690A Expired DE845716C (en) 1950-09-24 1950-09-24 Caloric radiation meter

Country Status (1)

Country Link
DE (1) DE845716C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011013975A1 (en) * 2011-03-15 2012-09-20 Black Photon Instruments GmbH Optoelectronic sensor for measuring direct solar radiation in e.g. parabolic trough solar power plant in roof of building, has protection window, case and housing that are arranged in optical path immediately in front of sensing element
DE102012022052A1 (en) 2012-11-09 2014-05-15 Black Photon Instruments GmbH Optoelectronic sensor used for measuring solar radiation, has optical filter whose transmission characteristic is proportional to photon energy and inversely proportional to external quantum efficiency of photovoltaic cell
DE102012024110A1 (en) * 2012-12-10 2014-06-12 Black Photon Instruments GmbH Device for measuring solar radiation, has sensor that is arranged between measuring intervals, and is made into guard state in which light entry region of solar radiation detector before contamination is protected

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011013975A1 (en) * 2011-03-15 2012-09-20 Black Photon Instruments GmbH Optoelectronic sensor for measuring direct solar radiation in e.g. parabolic trough solar power plant in roof of building, has protection window, case and housing that are arranged in optical path immediately in front of sensing element
DE102011013975B4 (en) * 2011-03-15 2015-07-16 Black Photon Instruments GmbH Optoelectronic sensor and its use
DE102012022052A1 (en) 2012-11-09 2014-05-15 Black Photon Instruments GmbH Optoelectronic sensor used for measuring solar radiation, has optical filter whose transmission characteristic is proportional to photon energy and inversely proportional to external quantum efficiency of photovoltaic cell
DE102012024110A1 (en) * 2012-12-10 2014-06-12 Black Photon Instruments GmbH Device for measuring solar radiation, has sensor that is arranged between measuring intervals, and is made into guard state in which light entry region of solar radiation detector before contamination is protected
DE102012024110B4 (en) * 2012-12-10 2015-02-05 Black Photon Instruments GmbH Device for measuring solar radiation

Similar Documents

Publication Publication Date Title
DE845716C (en) Caloric radiation meter
JPS5277786A (en) Temperature measuring device
Pieters et al. Leaf temperature measurement I. Thermocouples
DE442294C (en) Device for the determination of heat transmission and heat conductivity values, consisting of a subdivided measuring plate provided with an insulating layer
Phillips et al. Thermal conductivity of dental cement: a method and determinations for three commercial materials
Fetkovich System for Measuring the Effect of Fouling and Corrosion on Heat Transfer under Simulated OTEC Conditions
DE2906186B1 (en) Device for measuring the heat flow in closed heat transport systems
Haller et al. Lorenz number and thermal conductivity of liquid metals
JPS5315868A (en) Temperature measuring device
Amdur et al. A New Microscope Hot Stage
DE2414048C3 (en) Precision probe for measuring the surface temperature of human and animal skin
DE3713864A1 (en) Method for the accurate measurement of the relative atmospheric humidity
DE581800C (en) Device for electrical measurement of the thermal conductivity of gases and vapors
US2037637A (en) Atmosphere testing device
DE634849C (en) Auxiliary thermometer arrangement for measuring the temperature of the protruding thread of thermometers
Hemminger et al. Calibration as an aspect of quality assurance in differential scanning calorimetry (DSC) measurements
SU493614A1 (en) Device for determining the scope of variation of the sizes of parts in a batch
AT401316B (en) Method for determining the thermal conductivity coefficient of components
Riche et al. Second paper the respiration calorimeter of the Russell Sage Institute of Pathology in Bellevue hospital
DE481492C (en) Hot wire meter with thermocouple
DE509847C (en) Thermoelectric moisture meter with porous evaporation body made of ceramic mass
CH296378A (en) Device for the electrical measurement of the flow velocity of liquids.
GB483312A (en) Improvements in and relating to the measurement of temperature
DE309225C (en)
JPS55135722A (en) Temperature change measuring method for standard cell containing part in constant temperature oven