JPH0738835Y2 - Temperature measuring device - Google Patents
Temperature measuring deviceInfo
- Publication number
- JPH0738835Y2 JPH0738835Y2 JP1988148672U JP14867288U JPH0738835Y2 JP H0738835 Y2 JPH0738835 Y2 JP H0738835Y2 JP 1988148672 U JP1988148672 U JP 1988148672U JP 14867288 U JP14867288 U JP 14867288U JP H0738835 Y2 JPH0738835 Y2 JP H0738835Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- terminal
- circuit board
- printed circuit
- thermocouple
- 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 - Lifetime
Links
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Control Of Temperature (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は熱電対を用いた温度測定装置に関し、特に冷接
点補償素子の取付構造に特徴を有する温度測定装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a temperature measuring device using a thermocouple, and more particularly to a temperature measuring device characterized by a mounting structure of a cold junction compensation element.
従来熱電対を温度センサとする温度測定装置において、
熱電対の測温接点の発生する起電力は本体のセンサ端子
を基準接点とする起電力となっている。従って発生すべ
き起電力は基準接点の温度に相当する起電力を加えたも
のとすることが必要となる。そのため熱電対を接続する
接点の温度を正確に測定し、熱電対から得られる温度を
入力回路又は制御装置のソフトウエア等によって温度補
償する必要がある。従って冷接点補償素子をケース内に
配置する際には熱電対の接続端子に近い位置に設けると
共に、接続端子の温度変化を検知するために冷接点補償
素子の近傍のケースに放熱口を開け、外気を流入させる
ようにしたものが知られている。又冷接点補償素子をケ
ース外の端子部に設けるようにした装置も知られてい
る。In a conventional temperature measuring device that uses a thermocouple as a temperature sensor,
The electromotive force generated by the temperature measuring contact of the thermocouple is the electromotive force with the sensor terminal of the main body as the reference contact. Therefore, it is necessary to add the electromotive force corresponding to the temperature of the reference junction to the electromotive force to be generated. Therefore, it is necessary to accurately measure the temperature of the contact point to which the thermocouple is connected and to compensate the temperature obtained from the thermocouple with the software of the input circuit or the control device. Therefore, when arranging the cold junction compensation element in the case, it is provided at a position close to the connection terminal of the thermocouple, and a heat dissipation port is opened in the case near the cold junction compensation element to detect the temperature change of the connection terminal. It is known that the outside air is allowed to flow in. There is also known a device in which a cold junction compensating element is provided at a terminal portion outside the case.
しかしながらこのような従来の温度調節装置にあって
は、冷接点補償用の素子を内部に取付ける場合には基準
接点と本体内部に温度差が生じる場合があって正確に温
度補償することができず、又外部に設ける場合には紛失
したりケースとケース内のプリント基板等との交換性が
なくなるという欠点があった。However, in such a conventional temperature control device, when a cold-junction compensating element is mounted inside, a temperature difference may occur between the reference contact and the inside of the main body, and accurate temperature compensation cannot be performed. Further, when it is provided outside, there is a drawback that it is lost or the case is not replaceable with the printed circuit board or the like in the case.
本考案はこのような従来の問題点に鑑みてなされたもの
であって、温度測定装置の内部からの発熱の影響を受け
ることなく接続端子の温度を正確に反映することができ
るように冷接点補償素子を取付けるようにすることを技
術的課題とする。The present invention has been made in view of the above-mentioned conventional problems, and a cold junction is provided so that the temperature of the connection terminal can be accurately reflected without being affected by heat generated from the inside of the temperature measuring device. It is a technical task to mount the compensating element.
本考案は温度調節装置の端子に接続され測定対象の温度
を検知する熱電対と、熱電対が接続される接続端子の温
度を検知する冷接点補償素子と、冷接点補償素子によっ
て熱電対の測定温度を補償する入力回路と、を有する温
度測定装置であって、ケースに取付けられる複数の端子
及び各端子と基板を接続する弾性を有する端子金具を含
む端子台と、複数のエッジパターンが形成され、該エッ
ジパターンが形成される位置に設けられた切欠きを有す
るプリント基板と、を有し、冷接点補償素子は、プリン
ト基板の切欠き内にプリント基板と同一平面となるよう
に配置され、端子台の所定の端子金具に接触させるよう
にしたことを特徴とするものである。The present invention is a thermocouple that is connected to a terminal of a temperature control device to detect the temperature of a measurement target, a cold junction compensation element that detects the temperature of a connection terminal to which the thermocouple is connected, and a thermocouple measurement using a cold junction compensation element. A temperature measuring device having an input circuit for compensating temperature, comprising a plurality of terminals mounted on a case, a terminal block including elastic terminal fittings for connecting the terminals to the board, and a plurality of edge patterns. A printed circuit board having a cutout provided at a position where the edge pattern is formed, and the cold junction compensation element is arranged in the cutout of the printed circuit board so as to be flush with the printed circuit board. It is characterized in that the terminal block is brought into contact with a predetermined terminal fitting.
このような特徴を有する本考案によれば、プリント基板
の端部にエッジパターンと切欠きを設けてその切欠きに
冷接点補償素子をプリント基板と同一平面上に取付けて
いる。そして弾性を有する端子金具によって各エッジパ
ターン及び冷接点補償素子を端子に接続するようにして
いる。According to the present invention having such characteristics, an edge pattern and a notch are provided at the end of the printed board, and the cold junction compensation element is mounted on the same plane as the printed board. Then, each edge pattern and the cold junction compensating element are connected to the terminal by elastic terminal fittings.
第２図は本考案の一実施例による温度調節器の側面図、
第３図はこの温度調節器に取付けられるプリント基板を
示す正面図である。これらの図において温度調節器はケ
ース１とフロントパネル２によって筐体状に形成されて
おり、その背面には図示のように端子台３が設けられ
る。端子台３の各端子部には夫々弾性を有する端子金具
4a〜4h及びこれらの端子金具を夫々独立して保持する保
持部が形成されている。又プリント基板５は各端子金具
4a〜4gに当接する位置に破線で示すエッジパターン6a〜
6gが形成され、内部回路に接続されている。さてこのプ
リント基板５の端子金具4hに対応する位置には切欠き７
が形成され、切欠き７には図示のように冷接点補償用の
素子、例えば感温抵抗８が端子を折り曲げてプリント基
板５と同一面上に取付けられる。こうして構成されたプ
リント基板５をケース１内に挿入して固定する。FIG. 2 is a side view of a temperature controller according to an embodiment of the present invention,
FIG. 3 is a front view showing a printed circuit board attached to the temperature controller. In these figures, the temperature controller is formed into a housing by a case 1 and a front panel 2, and a terminal block 3 is provided on the back surface thereof as shown in the drawing. Each terminal portion of the terminal block 3 has elastic terminal fittings.
4a-4h and the holding part which hold | maintains these terminal metal fittings respectively independently are formed. Also, the printed circuit board 5 is each terminal fitting.
Edge patterns 6a-shown by broken lines at positions contacting 4a-4g
6g is formed and connected to the internal circuit. Now, at the position corresponding to the terminal metal fitting 4h of this printed circuit board 5, there is a notch 7
In the notch 7, an element for compensating for a cold junction, for example, a temperature sensitive resistor 8 is mounted on the same surface as the printed circuit board 5 by bending the terminal as shown in the figure. The printed circuit board 5 thus configured is inserted and fixed in the case 1.
第１図はこうして取付けられた感温抵抗８と端子金具4h
を示す部分断面図である。本図に示すようにプリント基
板５の切欠き７内に取付けられる感温抵抗は感温抵抗の
面が図示のようにプリント基板５の面と同一面上に取付
けられている。そしてケース１の裏面の端子部には夫々
端子金具4a〜4hに対応する端子ビス9a〜9hが取付けられ
ている。第１図ではこのうち最下端の端子ビス9hの周辺
部を示している。さて端子金具4hは図示のようにコ字状
に形成され端子ビス9hに電気的に接続されており、プリ
ント基板５の挿入時にはその一端が湾曲して感温抵抗８
の表面に圧接して接続される。他の端子金具4a〜4gは端
子ビス9a〜9gをプリント基板５のエッジパターン6a〜6g
に電気的に接続するものであり、最下端の端子金具4hは
感温抵抗８と外部端子ビス9hとを熱的に接触させるよう
にしている。そしてこの端子金具4hに近接する２つの端
子、即ち端子金具4f,4g及び端子ビス9f,9gに熱電対を接
続する。Fig. 1 shows the temperature-sensitive resistor 8 and terminal fitting 4h mounted in this way.
FIG. As shown in the figure, the temperature-sensitive resistor mounted in the notch 7 of the printed circuit board 5 is mounted such that the surface of the temperature-sensitive resistor is flush with the surface of the printed circuit board 5 as shown. Then, terminal screws 9a to 9h corresponding to the terminal fittings 4a to 4h are attached to the terminal portions on the back surface of the case 1, respectively. FIG. 1 shows the peripheral portion of the terminal screw 9h at the lowermost end. Now, the terminal metal fitting 4h is formed in a U shape as shown in the drawing and is electrically connected to the terminal screw 9h.
Is pressed against and connected to the surface of. For the other terminal fittings 4a to 4g, the terminal screws 9a to 9g are connected to the edge patterns 6a to 6g of the printed circuit board 5.
The terminal metal fitting 4h at the lowermost end makes the temperature-sensitive resistor 8 and the external terminal screw 9h come into thermal contact with each other. Then, a thermocouple is connected to the two terminals close to the terminal fitting 4h, that is, the terminal fittings 4f and 4g and the terminal screws 9f and 9g.
第４図は本実施例の温度調節器の温度補償を行う入力回
路と熱電対及び冷接点補償素子の接続状態を示す回路図
である。本図に示すように接続端子10f,10gは夫々前述
した端子ビス9f,端子金具4f及び端子ビス9g,端子金具4g
から成る。これらの接続端子10f,10gに補償導線11を介
して熱電対12が取付けられている。そして接続端子10f,
10gの温度を測定する感温抵抗８と共に、抵抗R1〜R3に
よってブリッジ回路が構成される。演算増幅器13はこの
電圧差を増幅することによって熱電対12の温度補償を行
うと共に熱電対12の先端の測温接点の温度に対応したレ
ベルの信号を出力するものである。そしてこの出力は図
示しない制御部に伝えられて制御対象の温度を設定値に
制御している。FIG. 4 is a circuit diagram showing the connection state of the input circuit for temperature compensation of the temperature controller of this embodiment, the thermocouple and the cold junction compensation element. As shown in this figure, the connection terminals 10f and 10g are respectively the above-mentioned terminal screw 9f, terminal metal fitting 4f and terminal screw 9g, terminal metal fitting 4g.
Consists of. A thermocouple 12 is attached to these connecting terminals 10f and 10g via a compensating lead wire 11. And the connection terminal 10f,
A bridge circuit is formed by the resistors R1 to R3 together with the temperature-sensitive resistor 8 that measures a temperature of 10 g. The operational amplifier 13 compensates the temperature of the thermocouple 12 by amplifying this voltage difference and outputs a signal of a level corresponding to the temperature of the temperature measuring contact at the tip of the thermocouple 12. Then, this output is transmitted to a control unit (not shown) to control the temperature of the controlled object to a set value.
ここで接続端子10f,10gは前述した端子ビス9f,9g及びエ
ッジパターン6f,6gを介してプリント基板５に接続され
ている。このように本考案によれば、プリント基板のエ
ッジパターンと同一面上に冷接点補償素子を取付けてお
くことによって、プリント基板を交換する際には同時に
感温抵抗自体も交換されることとなり、互換性を向上さ
せることができ感温抵抗を外部に接続した場合に比べて
紛失の恐れをなくすることができる。又端子金具を介し
て熱的に接触させるようにしているため、内部温度の影
響を受け難くすることができるという効果が得られる。Here, the connection terminals 10f and 10g are connected to the printed circuit board 5 through the terminal screws 9f and 9g and the edge patterns 6f and 6g described above. As described above, according to the present invention, by mounting the cold junction compensating element on the same surface as the edge pattern of the printed circuit board, when the printed circuit board is replaced, the temperature sensitive resistor itself is also replaced. The compatibility can be improved and the risk of loss can be eliminated as compared with the case where the temperature sensitive resistor is connected to the outside. Further, since it is thermally contacted via the terminal fitting, it is possible to obtain an effect that the influence of the internal temperature can be suppressed.
尚本実施例は温度制御装置について説明しているが、本
考案は温度を測定する種々の装置に適用することができ
ることはいうまでもない。Although the present embodiment describes the temperature control device, it goes without saying that the present invention can be applied to various devices for measuring temperature.
そのため本考案によれば、ケース内のプリント基板に各
端子金具と接続されるエッジパターンを設け、このエッ
ジパターンと同一位置にプリント基板の切欠き内に感温
抵抗を設けている。従って各エッジパターンと同様に端
子金具によって端子台に接続することができる。従って
端子金具の位置の温度を正確に感温抵抗に反映させるこ
とができる。更に冷接点補償素子はプリント基板に実装
されているため、この素子を紛失することがなく、又プ
リント基板を交換する際に冷接点補償素子を同時にその
まま交換することができ、新たなプリント基板の装着と
同時に冷接点補償素子の接続及び配置が可能になるとい
う効果が得られる。Therefore, according to the present invention, the printed circuit board in the case is provided with the edge pattern connected to each terminal fitting, and the temperature sensitive resistor is provided in the notch of the printed circuit board at the same position as the edge pattern. Therefore, it can be connected to the terminal block by the terminal fittings like the respective edge patterns. Therefore, the temperature at the position of the terminal fitting can be accurately reflected in the temperature sensitive resistance. Furthermore, since the cold junction compensating element is mounted on the printed circuit board, this element is not lost, and when the printed circuit board is replaced, the cold junction compensating element can be simultaneously replaced as it is, and the new printed circuit board The effect that the cold junction compensation element can be connected and arranged at the same time as mounting is obtained.
第１図は本考案の一実施例による端子部の感温抵抗と端
子金具との接続状態を示す断面図、第２図は本考案の一
実施例による温度調節器の側面図、第３図はこのケース
内に挿入されるプリント基板を示す図、第４図は本実施
例による温度調節器の入力回路の電気的構成を示す回路
図である。 １……ケース、２……フロントパネル、３……端子部、
4a〜4h……端子金具、５……プリント基板、6a〜6g……
エッジパターン、７……切欠き、８……感温抵抗FIG. 1 is a sectional view showing a connection state between a temperature-sensitive resistor of a terminal portion and a terminal fitting according to an embodiment of the present invention, FIG. 2 is a side view of a temperature controller according to an embodiment of the present invention, and FIG. Is a diagram showing a printed circuit board inserted in this case, and FIG. 4 is a circuit diagram showing an electrical configuration of an input circuit of the temperature controller according to the present embodiment. 1 ... Case, 2 ... Front panel, 3 ... Terminal part,
4a-4h …… Terminal metal fittings, 5 …… Printed circuit board, 6a-6g ……
Edge pattern, 7 ... Notch, 8 ... Thermal resistance
Claims (1)
温度を検知する熱電対と、 前記熱電対が接続される接続端子の温度を検知する冷接
点補償素子と、 前記冷接点補償素子によって前記熱電対の測定温度を補
償する入力回路と、を有する温度測定装置において、 ケースに取付けられる複数の端子及び各端子と基板を接
続する弾性を有する端子金具を含む端子台と、 複数のエッジパターンが形成され、該エッジパターンが
形成される位置に設けられた切欠きを有するプリント基
板と、を有し、 前記冷接点補償素子は、前記プリント基板の切欠き内に
前記プリント基板と同一平面となるように配置され、前
記端子台の所定の端子金具に接触させるようにしたこと
を特徴とする温度測定装置。1. A thermocouple connected to a terminal of a temperature control device for detecting the temperature of a measurement target; a cold junction compensation element for detecting the temperature of a connection terminal to which the thermocouple is connected; and a cold junction compensation element. A temperature measuring device having an input circuit for compensating the temperature measured by the thermocouple, comprising: a plurality of terminals attached to a case, a terminal block including elastic terminal fittings for connecting the terminals to the substrate, and a plurality of edge patterns. And a printed circuit board having a notch provided at a position where the edge pattern is formed, and the cold junction compensating element is flush with the printed circuit board in the notch of the printed circuit board. The temperature measuring device is arranged so as to be in contact with a predetermined terminal fitting of the terminal block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988148672U JPH0738835Y2 (en) | 1988-11-14 | 1988-11-14 | Temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988148672U JPH0738835Y2 (en) | 1988-11-14 | 1988-11-14 | Temperature measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0269735U JPH0269735U (en) | 1990-05-28 |
| JPH0738835Y2 true JPH0738835Y2 (en) | 1995-09-06 |
Family
ID=31420202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988148672U Expired - Lifetime JPH0738835Y2 (en) | 1988-11-14 | 1988-11-14 | Temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738835Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2555070Y2 (en) * | 1991-10-15 | 1997-11-19 | 横河電機株式会社 | Terminal block for thermocouple |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5230181U (en) * | 1975-08-25 | 1977-03-02 | ||
| JPS52155585U (en) * | 1976-05-20 | 1977-11-25 | ||
| JPS62119638U (en) * | 1986-01-21 | 1987-07-29 | ||
| JPS62195732U (en) * | 1986-05-31 | 1987-12-12 |
-
1988
- 1988-11-14 JP JP1988148672U patent/JPH0738835Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0269735U (en) | 1990-05-28 |
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