JPH01219527A - Resistance thermometer - Google Patents
Resistance thermometerInfo
- Publication number
- JPH01219527A JPH01219527A JP4431388A JP4431388A JPH01219527A JP H01219527 A JPH01219527 A JP H01219527A JP 4431388 A JP4431388 A JP 4431388A JP 4431388 A JP4431388 A JP 4431388A JP H01219527 A JPH01219527 A JP H01219527A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- case
- magnetic field
- oxide superconductor
- influence
- 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.)
- Pending
Links
- 239000002887 superconductor Substances 0.000 claims abstract description 12
- 230000005291 magnetic effect Effects 0.000 abstract description 21
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000004907 flux Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000005292 diamagnetic effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は磁場中における温度測定に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to temperature measurement in magnetic fields.
（従来の技術）
一般に固体の電気抵抗は温度によって変化することが知
られており、この現象を利用して第４図のように電気回
路を構成し抵抗体１に定電流６を流し抵抗体１の電圧降
下を電圧計７で測定し抵抗体１の抵抗値を算出して温度
計測を行う抵抗温度計が温度測定によく利用されている
。(Prior art) It is generally known that the electrical resistance of solids changes depending on the temperature, and by utilizing this phenomenon, an electric circuit is constructed as shown in Fig. 4, and a constant current 6 is passed through the resistor 1. A resistance thermometer that measures the voltage drop of 1 with a voltmeter 7, calculates the resistance value of the resistor 1, and measures the temperature is often used for temperature measurement.
（発明が解決しようとする課題）
しかしながら、抵抗体１は磁場中で使用される場合には
、磁束４の影響により測定値に誤差を生ずるという欠点
があった。(Problems to be Solved by the Invention) However, when the resistor 1 is used in a magnetic field, it has the disadvantage that an error occurs in the measured value due to the influence of the magnetic flux 4.
本発明は磁場中で使用しても磁場の影響による測定誤差
を生じることのない抵抗温度計を提供することを目的と
する。An object of the present invention is to provide a resistance thermometer that does not cause measurement errors due to the influence of the magnetic field even when used in a magnetic field.
（課題を解決するための手段）
上記目的を達成するため、本発明の抵抗温度計は抵抗体
を酸化物超電導体からなるケースに納めた構成とする。(Means for Solving the Problems) In order to achieve the above object, the resistance thermometer of the present invention has a structure in which a resistor is housed in a case made of an oxide superconductor.
（作 用）
本発明は上記のように構成されており、超電導体は完全
反磁性物質のため磁場を排除するマイスナー効果を示す
ので、酸化物超電導体からなるケースに納められた抵抗
体は外部磁場の影響を受けないため測定誤差を生じるこ
とはない。(Function) The present invention is configured as described above, and since the superconductor is a completely diamagnetic substance and exhibits the Meissner effect that eliminates the magnetic field, the resistor housed in the case made of the oxide superconductor is Since it is not affected by magnetic fields, it does not cause measurement errors.
（実施例） 本発明の一実施例を第１図を用いて説明する。(Example) An embodiment of the present invention will be described with reference to FIG.
図において抵抗体１は酸化物超電導体からなるケ−ス２
で覆われており、抵抗体１には電流供給用と電圧測定用
のリードａ３が接続されている。In the figure, the resistor 1 is a case 2 made of an oxide superconductor.
A lead a3 for current supply and voltage measurement is connected to the resistor 1.
抵抗体１は酸化物超電導体からなるケース２に納められ
ているため磁場中で使用されても磁束４はケース２によ
って排除され内部の抵抗体１には磁場の影響が及ぶこと
はない。したがって本実施例の抵抗温度計は外部磁場の
影響により測定誤差を生じることはない。Since the resistor 1 is housed in a case 2 made of an oxide superconductor, even if it is used in a magnetic field, the magnetic flux 4 is removed by the case 2, and the magnetic field does not affect the resistor 1 inside. Therefore, the resistance thermometer of this embodiment does not cause measurement errors due to the influence of external magnetic fields.
上記実施例では抵抗体１の外形が円柱形状をしているた
め第１図に示すような円筒形のケース２としているが、
酸化物超電導体は任意の形状に成形できるため、どんな
形状の抵抗体にも適用することができる。In the above embodiment, since the outer shape of the resistor 1 is cylindrical, a cylindrical case 2 as shown in FIG. 1 is used.
Since oxide superconductors can be molded into any shape, they can be applied to resistors of any shape.
次に本発明の他の実施例について第２図及び第３図を用
いて説明する。Next, another embodiment of the present invention will be described with reference to FIGS. 2 and 3.
第２図は円柱形状の外形を有する抵抗体１にこの抵抗体
１の長さより長い酸化物超電導体からなる円筒形のケー
ス２を抵抗体ｌの両端をオーバーハングしてかぶせたも
のであり、このようにすることにより抵抗体１の側面を
完全に覆わなくても磁場の影響を充分小さくすることが
できる。特に磁束が抵抗体１の円柱軸に直角である場合
に効果が大きい。In Fig. 2, a resistor 1 having a cylindrical outer shape is covered with a cylindrical case 2 made of an oxide superconductor, which is longer than the length of the resistor 1, with both ends of the resistor l overhanging. By doing so, the influence of the magnetic field can be sufficiently reduced without completely covering the side surfaces of the resistor 1. This is particularly effective when the magnetic flux is perpendicular to the cylindrical axis of the resistor 1.
第３図は第２図の実施例の円筒形のケースの両端を酸化
物超電導体からなる円板８で蓋をしたものであり、第１
図と同様の効果が得られる。FIG. 3 shows the cylindrical case of the embodiment shown in FIG. 2, with both ends covered with disks 8 made of oxide superconductor.
The same effect as shown in the figure can be obtained.
以上説明したように本発明によれば磁場中においても磁
場による測定誤差を生じない信頼性の高い抵抗温度計を
提供することができる。As explained above, according to the present invention, it is possible to provide a highly reliable resistance thermometer that does not cause measurement errors due to a magnetic field even in a magnetic field.
第１図は本発明の一実施例に係る抵抗温度計の要部断面
図、第２図及び第３図は本発明の他の実施例を示す要部
断面図、第４図は従来の抵抗温度計の明室原理を示す図
である。
１・・・抵抗体、 ２・・・ケース、３・・リ
ード線、 ４・・・磁束。
代理人 弁理士 則 近 憲 佑
同 第子丸 健
第１図
第２図
第４図FIG. 1 is a cross-sectional view of a main part of a resistance thermometer according to an embodiment of the present invention, FIGS. 2 and 3 are cross-sectional views of main parts showing other embodiments of the present invention, and FIG. It is a figure showing the bright room principle of a thermometer. 1...Resistor, 2...Case, 3...Lead wire, 4...Magnetic flux. Agent Patent Attorney Nori Ken Yudo Daishimaru Figure 1 Figure 2 Figure 4
Claims (1)
温度測定を行う抵抗温度計において、前記抵抗体が酸化
物超電導体からなるケースに納められていることを特徴
とする抵抗温度計。1. A resistance thermometer that measures temperature by utilizing the fact that the electrical resistance of a resistor changes with temperature, characterized in that the resistor is housed in a case made of an oxide superconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4431388A JPH01219527A (en) | 1988-02-29 | 1988-02-29 | Resistance thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4431388A JPH01219527A (en) | 1988-02-29 | 1988-02-29 | Resistance thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01219527A true JPH01219527A (en) | 1989-09-01 |
Family
ID=12687996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4431388A Pending JPH01219527A (en) | 1988-02-29 | 1988-02-29 | Resistance thermometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01219527A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03273122A (en) * | 1990-03-23 | 1991-12-04 | Okazaki Seisakusho:Kk | Temperature sensor for ferromagnetic field |
| JPH0476425A (en) * | 1990-07-18 | 1992-03-11 | Okazaki Seisakusho:Kk | Ferromagnetic temperature sensor |
-
1988
- 1988-02-29 JP JP4431388A patent/JPH01219527A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03273122A (en) * | 1990-03-23 | 1991-12-04 | Okazaki Seisakusho:Kk | Temperature sensor for ferromagnetic field |
| JPH0476425A (en) * | 1990-07-18 | 1992-03-11 | Okazaki Seisakusho:Kk | Ferromagnetic temperature sensor |
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