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Portable aluminum-copper fixed point blackbody furnace and application thereof

A fixed-point, portable technology, which is applied in the field of portable aluminum-copper fixed-point blackbody furnaces, can solve problems such as the influence of the accuracy of interpolation formulas, and achieve the effects of high performance, improved reproducibility, and improved accuracy

Active Publication Date: 2021-03-30
NAT INST OF METROLOGY CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for the medium temperature zone, the temperature interval of some fixed points is too large, which affects the accuracy of the interpolation formula. Therefore, it is necessary to explore some new fixed points and test their reproducibility experimentally.

Method used

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  • Portable aluminum-copper fixed point blackbody furnace and application thereof
  • Portable aluminum-copper fixed point blackbody furnace and application thereof
  • Portable aluminum-copper fixed point blackbody furnace and application thereof

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The present invention provides a portable aluminum-copper fixed-point black body furnace, comprising a portable fixed-point furnace and an aluminum-copper fixed-point crucible, the aluminum-copper fixed-poin...

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Abstract

The invention discloses a portable aluminum-copper fixed point blackbody furnace, which comprises a portable fixed point furnace and an aluminum-copper fixed point crucible, realizes melting and solidification of an aluminum-copper eutectic fixed point (548.2 DEG C), adopts a PLC three-section temperature control mode in combination with the high heat conduction characteristic of a red copper aluminizing soaking block, and can improve the uniformity of a temperature field, prolong the duration time of a temperature plateau, and improve the reproduction level. Although the determined aluminum-copper fixed point is not adopted in an ITS-90 temperature scale, the temperature value of the aluminum-copper fixed point falls between defined fixed points of a zinc fixde point and an aluminum fixedpoint and is at a good reproduction level less than 30 mK, and can serve as an auxiliary fixed point of a radiation temperature standard device in the temperature range from 420 DEG C to 660 DEG C, so that the temperature range of the calibration fixed point of an infrared radiation thermometer is extended, and the temperature measurement accuracy of the radiation thermometer is improved.

Description

technical field [0001] The invention relates to the technical field of temperature measurement, in particular to a portable aluminum-copper fixed-point blackbody furnace and its application. Background technique [0002] As we all know, temperature is a basic physical quantity, and temperature measurement plays an important role in science and production. Therefore, the establishment of a high-precision recurring international temperature scale (ITS-90) will have a long-term and far-reaching effect on the development of science and production. Impact. In order to establish a high-precision reproduction system for the new international temperature scale in the range of 0-961.78, it is necessary to reproduce the fixed points defined by the international temperature scale in this range with high precision: the freezing points of silver, aluminum, zinc and tin. Temperature fixed points utilizing phase transitions of substances are widely used for setting temperature scales, cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K15/00G01J5/52
CPCG01K15/002G01J5/80G01J5/53
Inventor 卢小丰廖福剑李秀丽张婷婷
Owner NAT INST OF METROLOGY CHINA
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