JPH0443789Y2 - - Google Patents
Info
- Publication number
- JPH0443789Y2 JPH0443789Y2 JP11488587U JP11488587U JPH0443789Y2 JP H0443789 Y2 JPH0443789 Y2 JP H0443789Y2 JP 11488587 U JP11488587 U JP 11488587U JP 11488587 U JP11488587 U JP 11488587U JP H0443789 Y2 JPH0443789 Y2 JP H0443789Y2
- Authority
- JP
- Japan
- Prior art keywords
- translucent
- radiation thermometer
- tip
- black body
- heat resistance
- 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
Links
- 230000005855 radiation Effects 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 230000031700 light absorption Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004431 optic radiations Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Radiation Pyrometers (AREA)
Description
【考案の詳細な説明】
《産業上の利用分野》
本考案は、光フアイバの先端に黒体を作り、先
端の放射光強度に基づいて温度を測定する、接触
式の放射温度計の改良に関するものである。[Detailed description of the invention] <<Industrial application>> This invention relates to an improvement of a contact-type radiation thermometer that measures temperature based on the intensity of emitted light at the tip by creating a black body at the tip of an optical fiber. It is something.
《従来の技術》
従来の光フアイバ形放射温度計の例としては、
サフアイヤフアイバの先端にPt，Ir等の金属をス
パツタして黒体を作り、その黒体の輝度を測定す
ることにより、温度を測るものがある（R.R.
Dils；High Temperature Optical Fiber
Thermometer，J.Appl.Phys.54（３）．March
1983 ）。《Prior art》 Examples of conventional fiber optic radiation thermometers include:
There is a method that measures temperature by sputtering metals such as P t and I r on the tip of a sapphire fiber to create a black body and measuring the brightness of the black body (RR
Dils；High Temperature Optical Fiber
Thermometer, J.Appl.Phys.54(3). March
1983).
《考案が解決しようとする問題点》
しかしながら、上記のものは、単結晶のサフア
イヤを使用しているため、曲げると折れ易く、高
価で取扱が難しいという問題があつた。<<Problems to be Solved by the Invention>> However, since the above-mentioned device uses single crystal sapphire, it has the problem of being easily broken when bent, being expensive, and difficult to handle.
本考案はこのような問題点を解決するためにな
されたもので、安価で入手の容易な材料を用いた
接触型放射温度計を実現することを目的とする。 The present invention was made to solve these problems, and its purpose is to realize a contact radiation thermometer using inexpensive and easily available materials.
《問題点を解決するための手段》
本考案に係る放射温度計用プローブは透光性セ
ラミツクスの先端に高耐熱かつ高光吸収率の第１
の物質をコーテイングして黒体を形成し、前記透
光性セラミツクスの他の部分を高反射率または低
屈折率かつ高耐熱の第２の物質でコーテイング
し、先端の黒体で発光した光が透光性セラミツク
ス中を伝送するように構成したことを特徴とす
る。<Means for Solving the Problems> The probe for a radiation thermometer according to the present invention has a highly heat-resistant and high light absorption first layer at the tip of translucent ceramics.
The other part of the translucent ceramic is coated with a second material having high reflectance or low refractive index and high heat resistance, so that the light emitted from the black body at the tip is It is characterized by being configured to transmit light through transparent ceramics.
《実施例》 以下本考案を図面を用いて詳しく説明する。"Example" The present invention will be explained in detail below using the drawings.
第１図は本考案に係る放射温度計用プローブの
一実施例を示す構成説明図である。１はフアイバ
状の透光性アルミナ、２は耐熱性および光吸収率
が高い第１の物質を構成しこの透光性アルミナ１
の先端に黒体を形成するためにスパツタ等により
形成されるタンタルコーテイング、３は反射率お
よび耐熱性が高い第２の物質を構成し光を伝送す
る伝送部を形成するために前記透光性アルミナ１
の他の部分にスパツタ等により形成されるNiコ
ーテイング、４は上記１〜３からなる本プローブ
が接続する光コネクタである。透光性アルミナ１
の先端のタンタルコーテイング２からなる黒体が
周囲温度により発する放射光はNiコーテイング
３および透光性アルミナ１からなる光伝送部を伝
わり、光コネクタ４を介して光検出部（図では省
略）に送られ、放射光強度から温度を演算する。
一般に透光性アルミナは光の透過率は非常に高い
が、結晶粒界で光が散乱されて直進しないので、
光伝送を行うにはNiのように反射率の高い材料
で周辺をコーテイングする必要がある。なお、第
１図に示すプローブは高温にさらされるが、放射
光は先端の黒体の強度が最も高く、その他の部分
の放射光はあまり問題とならない。 FIG. 1 is a configuration explanatory diagram showing one embodiment of a radiation thermometer probe according to the present invention. 1 constitutes a fiber-like translucent alumina, 2 constitutes a first substance with high heat resistance and high light absorption rate, and this translucent alumina 1
3 is a tantalum coating formed by sputtering or the like to form a black body on the tip of the tantalum coating. Alumina 1
4 is an optical connector to which the present probe consisting of 1 to 3 above is connected. Translucent alumina 1
Radiant light emitted by a blackbody made of tantalum coating 2 at the tip of the body due to ambient temperature is transmitted through an optical transmission part made of Ni coating 3 and translucent alumina 1, and then passes through an optical connector 4 to a light detection part (not shown). The temperature is calculated from the intensity of the emitted light.
Translucent alumina generally has a very high light transmittance, but the light is scattered at the grain boundaries and does not travel straight.
To transmit light, it is necessary to coat the periphery with a highly reflective material such as Ni . Although the probe shown in FIG. 1 is exposed to high temperatures, the intensity of the emitted light is highest at the black body at the tip, and the emitted light from other parts does not pose much of a problem.
このような構成の放射温度計用プローブによれ
ば、透光性アルミナという安価な材料を使用して
耐熱性の高い接触型放射温度計のプローブを実現
できる。 According to the probe for a radiation thermometer having such a configuration, it is possible to realize a probe for a contact type radiation thermometer with high heat resistance using an inexpensive material called translucent alumina.
なお上記の実施例において、透光性アルミナの
他に酸化マグネシウム，Y2O3，LiAl5O8，Sc2O3
等各種の透光性セラミツクスを用いることができ
る。 In addition, in the above example, magnesium oxide, Y 2 O 3 , Li Al 5 O 8 , S c2 O 3 was used in addition to the transparent alumina.
Various types of translucent ceramics can be used.
第２図は本考案に係る放射温度計用プローブの
第２の実施例を示す構成説明図である。第１図の
実施例と異なるのは、第２の物質として透光性ア
ルミナの周囲をMgＯやSiO2等の低屈曲率かつ高
耐熱性の物質３０でコーテイングすることによ
り、光フアイバのクラツドと同様の原理で伝送部
を構成している点である。 FIG. 2 is a configuration explanatory diagram showing a second embodiment of the radiation thermometer probe according to the present invention. The difference from the embodiment shown in FIG. 1 is that the light-transmitting alumina is coated with a material 30 having a low refractive index and high heat resistance, such as M g O or Si O 2 as the second material. The transmission section is constructed using the same principle as a fiber cladding.
《考案の効果》
以上述べたように本考案によれば、安価で入手
の容易な材料を用いた接触型放射温度計を実現す
ることができる。<<Effects of the Invention>> As described above, according to the present invention, a contact radiation thermometer using inexpensive and easily available materials can be realized.
第１図は本考案に係る放射温度計用プローブの
一実施例を示す構成ブロツク図、第２図は本考案
に係る放射温度計用プローブの第２の実施例を示
す構成ブロツク図である。
１……透光性セラミツクス、２……第１の物
質、３，３０……第２の物質。
FIG. 1 is a structural block diagram showing one embodiment of the radiation thermometer probe according to the present invention, and FIG. 2 is a structural block diagram showing a second embodiment of the radiation thermometer probe according to the present invention. 1... Translucent ceramics, 2... First substance, 3, 30... Second substance.
Claims (1)
耐熱かつ高光吸収率の第１の物質をコーテイン
グして黒体を形成し、前記透光性セラミツクス
の他の部分を高反射率または低屈折率かつ高耐
熱の第２の物質でコーテイングし、先端の黒体
で発光した光が透光性セラミツクス中を伝送す
るように構成したことを特徴とする放射温度計
用プローブ。 (2) 透光性セラミツクスとして透光性アルミナを
用いた実用新案登録請求の範囲第１項記載の放
射温度計用プローブ。[Claims for Utility Model Registration] (1) A black body is formed by coating the tip of a fiber-shaped translucent ceramic with a first substance having high heat resistance and high light absorption rate, and A radiation thermometer characterized in that the part is coated with a second material having high reflectance or low refractive index and high heat resistance, and the light emitted from the black body at the tip is transmitted through translucent ceramics. Probe for. (2) The radiation thermometer probe according to claim 1, which uses translucent alumina as the translucent ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11488587U JPH0443789Y2 (en) | 1987-07-27 | 1987-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11488587U JPH0443789Y2 (en) | 1987-07-27 | 1987-07-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6419135U JPS6419135U (en) | 1989-01-31 |
| JPH0443789Y2 true JPH0443789Y2 (en) | 1992-10-15 |
Family
ID=31356035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11488587U Expired JPH0443789Y2 (en) | 1987-07-27 | 1987-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0443789Y2 (en) |
-
1987
- 1987-07-27 JP JP11488587U patent/JPH0443789Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6419135U (en) | 1989-01-31 |
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