WO2017105206A1 - Source de rayonnement électrique pour l'étalonnage et/ou la caractérisation d'instruments de mesure de la température par télémétrie, améliorée - Google Patents

Source de rayonnement électrique pour l'étalonnage et/ou la caractérisation d'instruments de mesure de la température par télémétrie, améliorée Download PDF

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Publication number
WO2017105206A1
WO2017105206A1 PCT/MX2015/000221 MX2015000221W WO2017105206A1 WO 2017105206 A1 WO2017105206 A1 WO 2017105206A1 MX 2015000221 W MX2015000221 W MX 2015000221W WO 2017105206 A1 WO2017105206 A1 WO 2017105206A1
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Prior art keywords
radiation source
temperature
radiation
black body
calibration
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Application number
PCT/MX2015/000221
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English (en)
Spanish (es)
Inventor
Margarita KAPLUN MUCHARRAFILLE
Victor MARTINEZ FUENTES
Juan LEÑERO ESPINOZA
Giovanna TROTTA
Alberto ROSA SIERRA
Alejandro LIMON GARCIA
Grecia ACOSTA SOTO
Cesar Tomas MARTINEZ MEZA
Original Assignee
Kaplun Mucharrafille Margarita
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Application filed by Kaplun Mucharrafille Margarita filed Critical Kaplun Mucharrafille Margarita
Publication of WO2017105206A1 publication Critical patent/WO2017105206A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00—Testing or calibrating of thermometers

Definitions

  • the present invention relates to the technical field of mechanics, metrology, thermometry, telemetry and infrared radiation, because it describes a disc with a thermal gradient, consisting of at least one metallic thermal diffuser ring and a black body cylindrical cavity; an improved source of electrical radiation comprising said disk with thermal gradient and the cylindrical cavity of black body, to generate and control its temperature.
  • Infrared radiation is an electromagnetic radiation with wavelengths greater than those of visible light and shorter than millimeter wave radiation. All surfaces with a temperature greater than absolute zero (-273.15 ° C) emit infrared radiation.
  • the infrared radiation range follows immediately after the red light and occupies the range of 780 nm to 1 mm within the electromagnetic spectrum.
  • infrared radiation can be subdivided into three other ranges:
  • FIR far infrared [far infrared], 5.5 ⁇ m to 1 mm).
  • the temperature of an object can be measured from its spectral radiance.
  • a thermometer that works like this is called a radiation thermometer, and the measured temperature is called the radiance temperature.
  • Radiation thermometers measure the electromagnetic radiation emitted by an object as a result of its temperature. When an object reaches high temperatures, most of its radiation is a band of wavelengths called infrared spectrum. Very hot objects emit visible light that is also a form of electromagnetic radiation.
  • Radiation thermometers are designed to be sensitive within a specific band of wavelengths.
  • the most used spectral band in radiation thermometers is the one that ranges from 6.3 ⁇ m to 14 ⁇ m (6.3 to 14 micrometers).
  • Infrared radiation is electromagnetic radiation with wavelengths greater than visible light and smaller than millimeter wave radiation. Terms such as wavelength and amplitude are used to describe infrared and other types of electromagnetic radiation. For example, the wavelength describes the intensity of the electromagnetic radiation and the wavelength is used among other things to determine if it is a microwave, visible light or infrared radiation.
  • thermometers are used in a variety of situations where contact measures are not possible.
  • the applications that cover these devices are variable and day by day cover a greater number of analysis possibilities, considering large fields of application from aeronautics to common use applications, such as health, so confidence in these measures is Increase with calibration.
  • Radiation thermometers have an optical resolution defined by the relationship between the distance to the object and the diameter of the area that contains a specific percentage of the total energy collected (D: S) (Spot size).
  • D: S ratio is used as a guide to determine the appropriate distance to make infrared temperature measurements.
  • spot size * represents the pixel and the distance it can see and the" IFOV "is the subtended solid angle of the pixel to the target.
  • a narrow band radiation thermometer is one that has an optical filter that transmits a narrow range of wavelengths. This interval called spectral bandwidth ( ⁇ ) is in the order of some nanometers (nm).
  • a broadband radiation thermometer is one that is characterized by having an optical filter that transmits a wide range of wavelengths ( ⁇ ), this range is approximately a few micrometers ( ⁇ m).
  • Calibration is the operation that, under specified conditions, establishes, in a first stage, a relationship between the values and its associated measurement uncertainties obtained from the measurement patterns and the corresponding indications with its associated uncertainties and in a second stage, use this information to establish a relationship that allows obtaining a measurement result from an indication.
  • Reliable calibration means greater accuracy of readings, less worries, less doubts and greater productivity.
  • Calibration can also be defined as the set of operations carried out in accordance with a defined calibration procedure, which compares the measurements made by an instrument with others performed with a more accurate or standard instrument, with the purpose of detecting and informing , measurement errors, as well as the uncertainty value of the measurement of the instrument being calibrated.
  • the reference measurement standard is the standard designated for the calibration of magnitude patterns of the same nature in a given organization or location. (NMX-Z-055- IMNC-2009) In calibration processes there may be measurement errors that are defined as the difference between a measured value of a magnitude and a reference value (NMX-Z55-IMNC-2009).
  • NMX-Z55-IMNC-2009 There are also non-negative parameters that characterize the dispersion of the values attributed to a measurand, based on the information used.
  • NMX-Z55-IMNC-2009 which is defined as measurement uncertainty.
  • An infrared temperature calibration begins with a superficial measurement of what acts as a source of heat, which must be a flat plate or a cavity that functions as a standard or reference.
  • the calibration geometry which includes the size of the measuring surface and the distance of the thermometer to be calibrated, plays a fundamental role in the measurement result. Also critical are temperature stability, uniformity and physical properties of the emitting surface such as emissivity.
  • Emissivity is the radiant energy coming from an opaque surface and is a combination of the emitted radiance caused by the surface temperature and the reflected radiance coming from anywhere in the environment.
  • Emissivity is the ratio between the radiated energy emitted by a surface and that emitted by a black body at the same temperature. Emissivity is greatly affected by the type of surface material and its finish.
  • Infrared temperature calibrators must be designed to have a known emissivity, which must remain constant over time.
  • the emissivity can be any value between zero and one, both included. Zero emissivity indicates that no matter what the body temperature is, since no light will be radiated. An emissivity of one indicates that the surface will radiate perfectly at all wavelengths. "Black bodies" are objects perfectly radiant. Objects with emissivity very close to one are usually called black bodies. A calibrator with a flat surface and an emissivity of around 0.95 is usually called a gray body if the emissivity is uniform for all wavelengths.
  • thermometers if not most, assume a constant emissivity value for any object or source, that is, independent of temperature and wavelength. However, in most cases it is not met: the emissivity of bodies in general depends on both their temperature and wavelength. Only for an ideal black body is it satisfied that the value of its emissivity is independent of its temperature and wavelength.
  • a black body is an ideal surface that emits and absorbs electromagnetic radiation with the maximum amount of power possible at a given temperature according to Planck's Law, where:
  • c1L is the first radiation constant for spectral radiance, with a value equal to 1,191 042 759 x 10-16 WDm 2 Dsr- 1 .
  • LCN ( ⁇ , T) It is the emitted electromagnetic radiation, called spectral radiance because it involves physical properties of the source, such as:
  • Electromagnetic does not allow radiation to reflect or pass through it.
  • a black body is a long cavity with a small opening. The reflection is avoided because any light that enters through the hole has to be reflected on the surface of the body many times, being absorbed before escaping.
  • Wien's law can be used for the spectral radiance of a black body:
  • a gray body is a surface that emits radiation with a constant emissivity over all wavelengths and temperatures. Although gray bodies do not exist in practice, they are a good approximation for most real surfaces.
  • black bodies are not cavities, but surfaces and these are also used to calibrate radiation thermometers and the exposed radiation surface is preferred for radiation thermometers with a large viewing angle.
  • thermographic equipment do not determine the thermal gradient, in addition to that they provide "spot" temperature measurements without covering the wide range of matrix sizes involving thermographic equipment.
  • thermometer thermometer represents the average of the temperatures measured in the circle resulting from its measurement angle
  • temperature measured with the thermographic equipment is the result of capturing the radiated energy of the measured body, represented by a matrix with point values of temperature in X, Y.
  • thermographic equipment there are deficiencies that make it impossible to calibrate or characterize thermographic equipment.
  • it is only a temperature point to calibrate only one temperature of the thermal imager, there is no way to have a known thermal gradient to calibrate the temperature differences recorded by the thermal imager.
  • thermometers In the case of black surfaces, even though despite having thermal gradients, they are not determined in such a way that they cannot be compared with those shown by the thermal imager. Therefore, existing equipment is really designed to calibrate radiation thermometers and not thermographic equipment.
  • the metrological traceability of the reference thermometers can be given through a contact thermometer, which can be a type thermometer: RTD (Resistance Temperature Detector) or Thermocouple .
  • RTD Resistance Temperature Detector
  • Metrological traceability is the property of a measurement result whereby the result can be related to a reference through an uninterrupted and documented chain of calibrations, each of which contributes to the measurement uncertainty (NMX-Z-055-IMNC- 2009)
  • thermography a method to determine parameters of a component by means of thermography, in which at least one component is heated by means of a hot gas.
  • the invention further relates to a device for the determination of component parameters by means of thermography with a heating means for heating at least one component, with a temperature sensor to detect at least one temperature value of the component, in the that the heating means for heating the component is a hot gas emission device.
  • the patent EP 1726943 of Smith Kevin D of May 12, 2006 also discloses an inspection apparatus that includes a light source positioned to direct the light to a first surface of a workpiece.
  • An infrared detector is positioned to receive radiation from the first surface.
  • a data acquisition and processing computer is coupled to the light source and the infrared detector.
  • the equipment activates the light source to emit the light a series of cases.
  • the equipment acquires thermal data from the infrared detector for a number of times after each case.
  • the computer is configured to process the data using a theoretical solution to analyze thermal data based on a average of the thermal data for a number of each of the corresponding times from different instances between the instances.
  • the aforementioned invention has the disadvantage that although the radiation source with black body cavity can be adapted at different temperatures, the contact reference thermometer is fixed to the cavity and remains stuck over time, with which, the way to calibrate it periodically is impossible and therefore, you can get to lose its metrological traceability;
  • the geometry and type of electric heater generates a lack of uniformity in the cavity, thereby causing temperature gradients throughout the cavity.
  • the object of the present invention is to make available a source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved; to give traceability to the temperature measurements of radiation thermometers and thermographic equipment, which allows characterizing the function of thermal gradients of the thermographic cameras by means of plates with continuous and discrete thermal gradients; as well as calibrating radiation temperature measuring instruments, mainly radiation thermometers and thermographic equipment using the black body cavity with reference thermometer and / or radiation transfer thermometer.
  • Another objective of the invention is to make said source of electrical radiation available for calibration and / or characterization of temperature measurement instruments by telemetry, which also allows defining and knowing the thermal gradient required to characterize the temperature differences recorded by the equipment.
  • Another object of the invention is to make said source of electrical radiation available for calibration and / or characterization of temperature measuring instruments by telemetry, improved, which is also structurally practical, operationally efficient, safe and easy to operate.
  • Figure 1 shows in perspective an explosive of the source of electrical radiation for calibration and / or characterization of temperature measurement instruments by telemetry, improved.
  • Figure 2 shows in front perspective of the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved, without the front cover.
  • Figure 3 shows in front perspective of the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved, with the front cover.
  • Figure 4 shows in front perspective of the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved, and the front cover.
  • Figure 5 shows in perspective view of the source of electrical radiation for calibration and / or characterization of temperature measurement instruments by telemetry, improved.
  • Figure 6 shows a conventional perspective in detail of the cylindrical cavity of the black body of the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved, where a groove is seen on the cavity to place the control sensor, as well as a metallic insert, of the same material as the cavity, with a geometry preferably in the form of a positive cone or a negative cone.
  • Figure 7 shows a conventional perspective of the cylindrical cavity of the black body with the thermal gradient disk mechanically linked to the source of electrical radiation for calibration and / or characterization of telemetry enhanced temperature measurement instruments.
  • Figure 8 shows a conventional perspective in detail of the high efficiency heaters of the source of electric radiation for calibration and / or characterization of temperature measurement instruments by telemetry, improved.
  • Figure 9 illustrates a cross-section of a concentric thermal diffuser metal ring of those that make up the thermal gradient disk, showing the blasted holes, for the temperature sensors and the grooving of the front working surface, of the source of electrical radiation for calibration and / or characterization of temperature measurement instruments by telemetry, improved.
  • Figure 10 illustrates a graph of the temperature steps caused by the thermal contact resistors in the positions of 20 mm, 40 mm, 60 mm and 80 mm corresponding to the contact interfaces between two thermal diffuser plates (which make up the vertical arrangement of thermal gradient plates), made of a high thermal conductivity steel, preferably Inconel®, Stainless Steel, Bronze, Aluminum or similar thermal properties, ares, in the vertical arrangement of thermal gradient plates; where the inclination of the steps is due to the thermal conduction resistance of the steel blocks.
  • two thermal diffuser plates which make up the vertical arrangement of thermal gradient plates
  • a high thermal conductivity steel preferably Inconel®, Stainless Steel, Bronze, Aluminum or similar thermal properties
  • Figure 11 illustrates a detailed side view of the black body cylindrical cavity insert.
  • Concentric thermal diffuser metal ring 9a Concentric thermal diffuser metal ring 9b. Concentric thermal diffuser metal ring 9c. Concentric thermal diffuser metal ring
  • the source of electrical radiation for calibration and / or characterization of temperature measurement instruments by telemetry improved consists of an upper insulating housing (1) and a lower insulating housing (2) configured with a hollow for receive internally a lower heater (4) and an upper heater (5) that embed each other and they function as a source of high thermal efficiency thermal radiation; said lower (4) and upper (5) heaters house a black body cylindrical cavity (3) allowing the temperature of said cylindrical cavity to increase, and thanks to the upper (1) and lower (2) insulating housings, losses are avoided and temperature variations It is preferred that the thermal insulator be an insufficient high thermal resistance for temperatures close to 1000 ° C and lower. With sufficient thickness to avoid heating on the outside of the cabinet.
  • the lower insulating housing (2) has at least one duct (13) that allows the cables necessary for the operation of the source of electrical radiation to be passed for calibration and / or characterization of temperature measurement instruments by telemetry, improved
  • the lower heater (4) can be seen, this being equal to the heater (5); both the lower heater (4) and the upper one (5) are of high efficiency and ceramic material, preferably in the form of a half-round of 1500W (watts), to be used with a voltage of 230V (volts), this to efficiently reach temperatures up to 1000 ° C; and they have longitudinal channels on their inner faces that give them high efficiency and uniform distribution of heat in the rich cylinder cavity of the black body (3).
  • the cylindrical cavity of the black body (3) has a groove (7) which allows a cylindrical cavity insert of black body (6) to be placed to obtain the rear end.
  • the slot (7) also allows to place a contact thermometer of the RTD (resistance temperature detector) or Thermocouple type, to be connected to a temperature controller (18); and said rear end, has an interchangeable bottom to be able to use different bottom geometries in the cavity insert black body cylindrical (6), preferably with a positive cone or negative cone geometry, in order to increase the radiated energy.
  • the front end of the cylindrical cavity of the black body (3) is configured to support a disc with a thermal gradient (8) which is composed of at least one concentric thermal diffuser metal ring (9) which is removable, with at least two removable temperature sensors (not shown) in their smooth back, inserted in at least two bump holes (10), located horizontally, with respect to the axial axis of the black body cylindrical cavity (3) and Equistants at its center, inserted on both sides, which generate a radial profile of staggered temperatures due to the loss of heat by convection and radiation in each concentric thermal diffuser metal ring (9) to define temperature profiles with thermal gradient by contact thermal disk with thermal gradient (8) with the black body cylindrical cavity (3), as illustrated in Figure 9.
  • a thermal gradient (8) which is composed of at least one concentric thermal diffuser metal ring (9) which is removable, with at least two removable temperature sensors (not shown) in their smooth back, inserted in at least two bump holes (10), located horizontally, with respect to the axial axis of the black body cylindrical cavity (3) and Equistants
  • the concentric metal rings (9) comprise a groove of triangular profile (1 1) on its outer surface of its front working face (12) which are shown as triangular grooves (equilateral) in cross section and that avoid reflections in it.
  • the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved has a base (14) that houses at least two supports (15), on which the insulating housing is placed lower (2) already connected with the upper insulating housing (1), which inside are the lower (4) and upper (5) heater already fixed in the black body cylindrical cavity (3).
  • the base (14) has in its lower part with at least four levelers (16), which prevent the source of electrical radiation for calibration and / or characterization of temperature measurement instruments by telemetry, improved, have movements not desired
  • the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry improved has a control board (17) removable; embedded in said board is a temperature controller (18), which is preferably digital or "ramp" type.
  • the control board (17) has a data acquisition system (19), a switch (20) and, at least, a second power fuse (32), which, when activated, allow the operation of the present invention.
  • the data acquisition system (19) has wireless connection technology for electronic devices known as "Wi-FiV
  • the base (14) houses a muffle (23), at least one heat sink (24), a power fuse (21) and a magnetic induction thermal starter contact (25) , which protects the radiation source of the present invention from some overload.
  • an upper cover (26) is fixed, which is removable in order to cover the lower insulating shell (2) when it is already connected with the upper insulating shell (1), which inside are the lower (4) and upper (5) heater already fixed in the black body cylindrical cavity (3); a side cover (27) is fixed at each base fado (14) and the top cover (26).
  • the top cover (26) and fas side covers (27) are removable and have at least one handle (31), which serves to grab the source of electrical radiation for calibration and / or characterization of telemetry temperature measuring instruments , improved, so that it can be transported to various places in a simple way.
  • the side covers (27) have at least one ventilation means (29), which can be a grid and / or a fan, which allow circulation inside the source of electrical radiation reducing the temperature, to prevent the electrical equipment from failing.
  • a front cover (28) is attached by fastening means (30) to the upper cover (26), engaging in the front part of the source of electrical radiation for calibration and / or characterization of temperature measuring instruments by telemetry, improved; in such a way that it protects the disk with thermal gradient (8) and the control board (17), when the source of electric radiation is moved or is not in use, when it reaches the destination where the source of radiation, the front cover (28) is removed.
  • the fastening means (30) can be clasps, tongue and groove mechanism, magnets, mechanical clamps, sailboat and / or the combination of the above.
  • Both the top cover (26), sides (27) and front (28) are made of thermal insulating materials, with the purpose of reducing the outside temperature and can be transported immediately after use, without risking burns.
  • the types of cylindrical cavities of black bodies (3), to be used in the present invention are those that preferably have the characteristics of the following table:
  • the material of which the metallic thermal diffuser ring (9) of the present invention is made depends on the temperature at which it is intended to calibrate and / or characterize the temperature measuring instruments by telemetry, as shown in the following. Table:
  • the disk with thermal gradient (8) is formed by at least one concentric thermal diffuser metal ring (9), in the present invention at least four concentric thermal diffuser metal rings are preferred (9a), (9b), (9c) and (9d), mechanically assembled on the disk with thermal gradient (8), which in its preferred mode has the following diameters:
  • Each of said concentric thermal diffuser metal rings (9a), (9b), (9c) and (9d) comprises four threaded holes (10) arranged diametrically and horizontal to the axial axis, to accommodate at least two temperature sensors (no shown), four sensors are preferred in the present invention of temperature (not shown), for the temperature taking of the points for each concentric thermal diffuser metal ring (9a), (9b), (9c) and (9d).
  • the temperature sensors consist of thermocouples type "J", "T * or" N ".
  • thermocouple temperatures of each concentric thermal diffuser metal ring (9a), (9b), (9c) and (9d) are measured.
  • the temperature gradient is generated radially in the disk with thermal gradient (8) composed of said concentric thermal diffuser metal rings (9a), (9b), (9c) and (9d).
  • ⁇ is the temperature difference between two consecutive points and AL is the distance between those two consecutive points.
  • the temperature difference is mainly measured with calibrated thermocouples located on the back of the concentric thermal diffuser metal rings (9).
  • the distance between two consecutive points is known from the design and construction of said concentric thermal diffuser metal rings (9).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

La présente invention concerne une source de rayonnement électrique pour l'étalonnage et/ou la caractérisation d'instruments de mesure de température par télémétrie, améliorée; pour donner une traçabilité aux mesures de température de thermomètres à rayonnement et d'équipements thermographiques, qui permet de caractériser la fonction de gradients thermiques des caméras thermographiques au moyen de plaques à gradients thermiques continus et discrets; ainsi que d'étalonner et de donner une traçabilité aux mesures de température de thermomètres à rayonnement et d'équipements thermographiques à l'aide de la cavité de corps noir avec un thermomètre étalonné. L'invention a pour autre objet de rendre disponible ladite source de rayonnement électrique pour l'étalonnage et/ou la caractérisation d'instruments de mesure de température par télémétrie, améliorée, qui permet en outre de définir et de connaître le gradient thermique requis pour caractériser les différences de température enregistrées par les équipements thermographiques. L'invention a enfin pour objet de rendre disponible ladite source de rayonnement électrique pour l'étalonnage et/ou la caractérisation d'instruments de mesure de température par télémétrie, améliorée, qui en outre soit structuralement pratique, fonctionnellement efficace et facile à utiliser.
PCT/MX2015/000221 2015-12-18 2015-12-18 Source de rayonnement électrique pour l'étalonnage et/ou la caractérisation d'instruments de mesure de la température par télémétrie, améliorée WO2017105206A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MX2015017718A MX2015017718A (es) 2015-12-18 2015-12-18 Fuente de radiación eléctrica para calibración y/o caracterización de intrumentos de medición de temperatura por telemetría, mejorada.
MXMX/A/2015/017718 2015-12-18

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WO2017105206A1 true WO2017105206A1 (fr) 2017-06-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019088814A1 (fr) * 2017-11-03 2019-05-09 Kaplun Mucharrafille Margarita Source de rayonnement électrique à cavité de corps noir interchangeable pour étalonnage d'instruments de mesure de température par télémétrie
WO2019088813A1 (fr) * 2017-11-03 2019-05-09 Kaplun Mucharrafille Margarita Appareil portable pour mesurer et étalonner des instruments de mesure de la température par télémétrie
CN110017917A (zh) * 2018-01-09 2019-07-16 北京康斯特仪表科技股份有限公司 一种低温干体温度校验仪
CN110726489A (zh) * 2019-12-03 2020-01-24 安徽工业大学 一种电力开关柜温度场综合测试装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263016A (en) * 1963-10-30 1966-07-26 Branstetter James Robert Black-body furnace
US20050205773A1 (en) * 2004-03-22 2005-09-22 Fauci Mark A Integrated black body and lens cap assembly and methods for calibration of infrared cameras using same
US20090122826A1 (en) * 2007-11-14 2009-05-14 Fluke Corporation Infrared Target Temperature Correction System and Method
WO2015093930A1 (fr) * 2013-12-19 2015-06-25 Kaplun Mucharrafille Margarita Système et procédé d'étalonnage et de caractérisation d'instruments de mesure de la température par télémétrie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263016A (en) * 1963-10-30 1966-07-26 Branstetter James Robert Black-body furnace
US20050205773A1 (en) * 2004-03-22 2005-09-22 Fauci Mark A Integrated black body and lens cap assembly and methods for calibration of infrared cameras using same
US20090122826A1 (en) * 2007-11-14 2009-05-14 Fluke Corporation Infrared Target Temperature Correction System and Method
WO2015093930A1 (fr) * 2013-12-19 2015-06-25 Kaplun Mucharrafille Margarita Système et procédé d'étalonnage et de caractérisation d'instruments de mesure de la température par télémétrie

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019088814A1 (fr) * 2017-11-03 2019-05-09 Kaplun Mucharrafille Margarita Source de rayonnement électrique à cavité de corps noir interchangeable pour étalonnage d'instruments de mesure de température par télémétrie
WO2019088813A1 (fr) * 2017-11-03 2019-05-09 Kaplun Mucharrafille Margarita Appareil portable pour mesurer et étalonner des instruments de mesure de la température par télémétrie
CN110017917A (zh) * 2018-01-09 2019-07-16 北京康斯特仪表科技股份有限公司 一种低温干体温度校验仪
CN110726489A (zh) * 2019-12-03 2020-01-24 安徽工业大学 一种电力开关柜温度场综合测试装置
CN110726489B (zh) * 2019-12-03 2024-05-28 安徽工业大学 一种电力开关柜温度场综合测试装置

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