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JPS6129447B2 - - Google Patents
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JPS6129447B2 - - Google Patents

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Publication number
JPS6129447B2
JPS6129447B2 JP12459478A JP12459478A JPS6129447B2 JP S6129447 B2 JPS6129447 B2 JP S6129447B2 JP 12459478 A JP12459478 A JP 12459478A JP 12459478 A JP12459478 A JP 12459478A JP S6129447 B2 JPS6129447 B2 JP S6129447B2
Authority
JP
Japan
Prior art keywords
temperature
thermometer
contact
thermocouples
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
Application number
JP12459478A
Other languages
Japanese (ja)
Other versions
JPS5551326A (en
Inventor
Kamekichi Shiba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHISAKA KENKYUSHO KK
Original Assignee
SHISAKA KENKYUSHO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHISAKA KENKYUSHO KK filed Critical SHISAKA KENKYUSHO KK
Priority to JP12459478A priority Critical patent/JPS5551326A/en
Publication of JPS5551326A publication Critical patent/JPS5551326A/en
Publication of JPS6129447B2 publication Critical patent/JPS6129447B2/ja
Granted legal-status Critical Current

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  • Measuring Temperature Or Quantity Of Heat (AREA)

Description

【発明の詳細な説明】 本発明は非接触熱電温度計に関する。[Detailed description of the invention] The present invention relates to a non-contact thermocouple.

非接触熱電温度計は、公知のように、回転体の
表面温度など接触させて測定することが困難な場
合に使用される温度計である。
As is well known, a non-contact thermocouple thermometer is a thermometer used in cases where it is difficult to measure the surface temperature of a rotating body by contacting the body.

熱電温度計の代りに連接温度計を用いても非接
触熱電温度計と同様のものが作られるが、本発明
の非接触連接温度計は、1個の抵抗温度計(ある
いはサーミスタ温度計、トランジスタ温度計)に
2個あるいは4個(1般には2n個)の熱電対を
連接して構成される。
Although a device similar to a non-contact thermocouple can be made by using a connecting thermometer instead of a thermocouple, the non-contact connecting thermometer of the present invention can be made by using a single resistance thermometer (or a thermistor thermometer, or a transistor thermometer). It consists of two or four (generally 2n) thermocouples connected to a thermometer.

こゝでは、抵抗温度計の場合を例にとるが、サ
ーミスタ温度計でもトランジスタ温度計でも同様
である。
Here, we will use a resistance thermometer as an example, but the same applies to a thermistor thermometer or a transistor thermometer.

非接触熱電温度計は、2個の熱電温度計によつ
て2点の温度を測定して被測定温度が知られるも
のである。第1図は、その2個の測温接点の位置
を示す概略図である。Fは被測温表面、Pは加熱
される金属薄板、Hはヒータである。Aが測温接
点Bは補助温度の測温接点である。測温接点Aは
被測温表面Fの近くに置かれており、測温接点B
は点Aの近くにおかれているPにつけられてい
る。
A non-contact thermocouple thermometer measures temperatures at two points using two thermocouples, and the temperature to be measured is known. FIG. 1 is a schematic diagram showing the positions of the two temperature measuring contacts. F is a surface to be measured, P is a thin metal plate to be heated, and H is a heater. A is a temperature measuring junction, and B is a temperature measuring junction for auxiliary temperature. Temperature measurement contact A is placed near temperature measurement surface F, and temperature measurement contact B
is attached to P, which is located near point A.

被測温表面Fの温度(すなわち、求める真温
度)をt℃、2点A,Bの温度をそれぞれτ℃、
θ℃とすると、一般に、 t<τ<θ、t=τ=θ、t>τ>θ のいずれかである。温度θ℃は適宜の温度である
から、これを非接触熱電温度計の補助温度という
ことにし、温度τ℃を測定温度ということにす
る。
The temperature of the surface F to be measured (that is, the true temperature to be determined) is t°C, and the temperatures of the two points A and B are τ°C, respectively.
Assuming θ°C, generally any of the following holds true: t<τ<θ, t=τ=θ, t>τ>θ. Since the temperature θ° C. is an appropriate temperature, this will be referred to as the auxiliary temperature of the non-contact thermocouple, and the temperature τ° C. will be referred to as the measurement temperature.

被測定温度t℃は変わらないとして、ヒータの
電流を変えて補助温度θ℃を変えると、測定温度
τ℃も変わる。このときのτとθとの関係は、温
度t℃を中にしてのかなり広い温度範囲にわたつ
て、第2図に示されているように直線で表わされ
ることが実験によつて認められている。
Assuming that the temperature to be measured t°C remains unchanged, if the heater current is changed to change the auxiliary temperature θ°C, the measured temperature τ°C also changes. Experiments have shown that the relationship between τ and θ in this case is expressed by a straight line over a fairly wide temperature range starting at t°C, as shown in Figure 2. There is.

τとθとの関係を表わす直線と、τ、θ両座標
軸の間の角の2等分線(第2図の破線OG)との
交点のτあるいはθがtに等しい。
τ or θ at the intersection of the straight line representing the relationship between τ and θ and the bisector of the angle between the τ and θ coordinate axes (broken line OG in FIG. 2) is equal to t.

第2図を変えて、(τ−θ)とτとのグラフを
作ると第3図が得られる。これも直線であり、τ
軸との交点のτがtに等しい。
If we change Figure 2 and create a graph of (τ-θ) and τ, Figure 3 is obtained. This is also a straight line, and τ
τ at the intersection with the axis is equal to t.

t℃を知るには、θ℃を変えてτ℃を測定し、
τとθとのグラフを作つてOGとの交点を求める
か、θ℃を調節してτ=θであるようにするかの
いずれの方法でもよい。しかし、いずれの方法に
よつても、温度t℃を知るのに、かなり時間が
かゝるし、t℃が変わるときには適用できない方
法である。
To know t℃, change θ℃ and measure τ℃,
Either create a graph of τ and θ and find the intersection with OG, or adjust θ°C so that τ=θ. However, with either method, it takes a considerable amount of time to determine the temperature t°C, and these methods cannot be applied when t°C changes.

非接触連接温度計は、熱電対を抵抗温度計、サ
ーミスタ温度計あるいはトランジスタ温度計に連
接して構成される。こゝでは熱電対を抵抗温度計
に連接するものを例として説明するが、他の場合
もほゞ同様である。
A non-contact linked thermometer is constructed by linking a thermocouple to a resistance thermometer, a thermistor thermometer, or a transistor thermometer. Here, we will explain an example in which a thermocouple is connected to a resistance thermometer, but the same applies to other cases.

2個の熱電対を1個の抵抗温度計に連接するの
に、電気的連接でもよいが、熱的連接の場合を例
にとる。2個の熱電対は、ともにa、bなる材質
の素線のものであるとし、その熱起電力の温度係
数がβであるとする。
Although electrical connection may be used to connect two thermocouples to one resistance thermometer, thermal connection will be taken as an example. It is assumed that the two thermocouples are both wires made of materials a and b, and that the temperature coefficient of their thermoelectromotive force is β.

第4図は連接を説明するための図である。Rは
抵抗温度計の測温抵抗線で、その温度は連接温度
G℃である。JAJA,JBJBは2個の熱電対、λは
定抵抗で、適宜に選定された連接温度計の基準温
度t0℃での測温抵抗線の抵抗R0に等しい。それ
で、測温抵抗線の抵抗Rは R=R0{1+α(tG−t0)} (1) である。さらに、rは可変抵抗、Sは定電圧電源
である。
FIG. 4 is a diagram for explaining connection. R is the temperature-measuring resistance wire of the resistance thermometer, whose temperature is the joint temperature t G °C. JAJ A and JBJ B are two thermocouples, and λ is a constant resistance, which is equal to the resistance R 0 of a resistance thermometer wire at a reference temperature t 0 °C of an appropriately selected connected thermometer. Therefore, the resistance R of the resistance temperature measuring wire is R=R 0 {1+α(t G −t 0 )} (1). Furthermore, r is a variable resistor, and S is a constant voltage power supply.

破線で囲まれた部分が連接部で、その中に測温
抵抗線Rと両熱電対の接点J,JA,JBがあり、
いずれもその温度が同じく連接温度tG℃であ
る。
The part surrounded by the broken line is the connecting part, and inside it there are the resistance temperature wire R and the contact points J, J A , and J B of both thermocouples.
The temperature in both cases is the same joint temperature t G °C.

R、λを含む回路に電流iが流れているとす
る。2点M,mにおける電位をそれぞれVM,Vn
とし、JA,JBの電位をそれぞれVA,VBとする
と、 VM=i(R+λ)=iR0{2+α(tG−t0)} (2) Vn=iλ=iR0 (3) VA=β(τ−tG)、VB=β(θ−tG) (4) である。JAとJBとの電位差は VA−VB=β(τ−θ) (5) である。
Suppose that a current i is flowing through a circuit including R and λ. The potentials at two points M and m are V M and V n , respectively.
and let the potentials of J A and J B be V A and V B , respectively, then V M = i (R + λ) = iR 0 {2 + α (t G - t 0 )} (2) V n = iλ = iR 0 ( 3) V A = β(τ-t G ), V B = β(θ-t G ) (4). The potential difference between J A and J B is V A −V B =β(τ−θ) (5).

可変抵抗rを調節して iR0α=β (6) であるように、電流iを定める。このときには VM−2Vn=iR0α(tG−t0) =β(tG−t0) (7) であるから VM−2Vn+VA=β(τ−t0) (8) VM−2Vn+VB=β(θ−t0) (9) である。式(8)、(9)の左辺は、演算増幅器で得られ
る。これらの電圧の測定によつてτ℃、θ℃が知
られる(基準温度t0℃は既知である)。また、電
圧(VA−VB)の測定によつて温度差(τ−θ)
℃が得られる。このように、非接触熱電温度計と
同様に、非接触連接温度計でt℃を知ることがで
きる。VA−VBが0になるように、ヒーターの電
流iを加減することによつても温度t℃が知られ
る。
The current i is determined by adjusting the variable resistor r so that iR 0 α=β (6). In this case, V M -2V n = iR 0 α (t G - t 0 ) = β (t G - t 0 ) (7), so V M -2V n + V A = β (τ - t 0 ) (8 ) V M −2V n +V B =β(θ−t 0 ) (9). The left sides of equations (8) and (9) are obtained by an operational amplifier. By measuring these voltages, τ°C and θ°C are known (the reference temperature t 0 °C is known). Also, by measuring the voltage (V A - V B ), the temperature difference (τ - θ)
℃ is obtained. In this way, like a non-contact thermocouple thermometer, t°C can be determined using a non-contact continuous thermometer. The temperature t°C is also known by adjusting the heater current i so that V A -V B becomes zero.

このような非接触連接温度計は、2個の熱電温
度計を用いる旧来の非接触熱電温度計に比して、
冷接点を不用とするなどの利点はあるが、応答性
はほとんど改善されていない。
Such a non-contact thermocouple thermometer has two thermocouple thermocouples.
Although there are advantages such as eliminating the need for cold junctions, there is little improvement in response.

4個の熱電対を1個の抵抗温度計に連接して応
答性のよい非接触連接温度計を構成することがで
きる。
A non-contact linked thermometer with good responsiveness can be constructed by linking four thermocouples to one resistance thermometer.

4個の熱電対J1A1JA1,J1B1JB1,J2A2JA2
J2B2JB2を第5図にように1個の抵抗温度計に連
接する。A1,B1およびA2,B2は2個の非接触熱
電温度計の測温接点の役目をする。2個の熱電対
J1A1JA1,J1B1JB1と抵抗温度計とで非接触連接温
度計を構成し、J2A2JA2,J2B2JB2と抵抗温度計
とで非接触連接温度計を構成する。
4 thermocouples J 1 A 1 J A1 , J 1 B 1 J B1 , J 2 A 2 J A2 ,
Connect J 2 B 2 J B2 to one resistance thermometer as shown in Figure 5. A 1 , B 1 and A 2 , B 2 serve as temperature measuring junctions of two non-contact thermocouple thermometers. 2 thermocouples
J 1 A 1 J A1 , J 1 B 1 J B1 and a resistance thermometer constitute a non-contact connection thermometer, and J 2 A 2 J A2 , J 2 B 2 J B2 and a resistance thermometer constitute a non-contact connection. Configure the thermometer.

なお、第5図に示した非接触熱電温度計の4個
の測温接点A1,B1,A2,B2の配置を第6図に示
す。第6図中、A1,B1,A2,B2は上記の測温接
点、Fは被測温表面、P1は測温接点A1に近接す
る測温接点B1が設けられ加熱される金属薄板、
H1は上記金属薄板P1を加熱するためのヒータで
あり、同様にP2は測温接点A2に近接する測温接
点B2が設けられ加熱される金属薄板、H2は上記
金属薄板P2を加熱するためのヒータである。ヒー
タH1とH2の発熱量を変えることにより測温接点
B1の温度θと測温接点B2の温度θをθ
θとすることができる。
Note that FIG. 6 shows the arrangement of the four temperature measuring contacts A 1 , B 1 , A 2 , B 2 of the non-contact thermocouple shown in FIG. 5. In Fig. 6, A 1 , B 1 , A 2 , B 2 are the temperature measurement contacts mentioned above, F is the surface to be measured, and P 1 is the temperature measurement contact B 1 which is close to the temperature measurement contact A 1 and is heated. thin metal sheet,
H 1 is a heater for heating the metal thin plate P 1 , P 2 is a metal thin plate provided with a temperature measurement contact B 2 close to the temperature measurement contact A 2 and heated, and H 2 is the metal thin plate This is a heater for heating P2 . Temperature measuring junction by changing the calorific value of heaters H1 and H2
The temperature θ 1 of B 1 and the temperature θ 2 of temperature measuring junction B 2 are θ 1
θ 2 can be used.

一般にn個の非接触熱電温度計の2n個の熱電
対の2n個の測温接点の配置についても同様であ
り、n個の非接触熱電温度計のそれぞれについて
個別にヒータと金属薄板を設けるようにすれば良
い。
Generally, the same is true for the arrangement of 2n temperature measuring junctions of 2n thermocouples in n non-contact thermocouples, and a heater and a thin metal plate are individually provided for each of n non-contact thermocouples. You should do it.

以下、第5図を参照しつゝ2個の非接触熱電温
度計を用いる場合について説明する。
The case where two non-contact thermocouples are used will be described below with reference to FIG.

A1,B1,A2,B2の温度をそれぞれτ℃、θ
℃、τ℃、θ℃とし、θ≠θとする。
これらの点の電位VA1,VB1,VA2,VB2は式(4)
と同様に、 VA1=β(τ−tG)、VB1=β(θ−tG)、 VA2=β(τ−tG)、VB2=β(θ−tG
(10) である。前の通りに、式(6)を充たす電流iを流す
と、式(7)がそのまゝ成立つ。
The temperatures of A 1 , B 1 , A 2 , and B 2 are τ 1 ℃ and θ
1 °C, τ 2 °C, and θ 2 °C, and θ 1 ≠ θ 2 .
The potentials V A1 , V B1 , V A2 , and V B2 at these points are expressed by formula (4)
Similarly, V A1 = β (τ 1 - t G ), V B1 = β (θ 1 - t G ), V A2 = β (τ 2 - t G ), V B2 = β (θ 2 - t G )
(10). As before, when a current i that satisfies equation (6) is passed, equation (7) holds true.

また、式(8)のVAをVA1あるいはVA2とし、τ
をτあるいはτとした式、および式(9)のVB
をVB1あるいはVB2とし、θをθあるいはθ
とした式が成立つ。
Also, let V A in equation (8) be V A1 or V A2 , and τ
is τ 1 or τ 2 , and V B of equation (9)
Let V B1 or V B2 , and θ be θ 1 or θ 2
The formula holds true.

第3図から知られるように、 τ−θ/τ−θ=t−τ/t−τ=(t−
)−(τ−t)/(t−t)−(τ−t
)(11) である。これを(t−t0)について解くと、 t−t0=(τ−t)(τ−θ)−(τ−t)(τ−θ)/(τ−θ)−(τ
−θ)(12) が得られる。この式の両辺にβを乗じると、 β(t−t0)=β(τ−t)β(τ−θ)−β(τ−t)β(τ−θ)/β(τ−θ
)−β(τ−θ)(13) すなわち、 β(t−t0)=(V−2V+VA1)(VA2−VB2)−(V−2V+VA2)(VA1−VB1)/(
A2−VB2)−(VA1−VB1)(14) となる。この式の右辺は演算、増幅器で得られ
る。この電圧β(t−t0)を測定することによつ
つて、t℃が知られる。
As is known from FIG. 3, τ 1 −θ 12 −θ 2 =t−τ 1 /t−τ 2 =(t−
t0 )-( τ1 - t0 )/(t- t0 )-( τ2 - t0
)(11). Solving this for (t-t 0 ), t-t 0 = (τ 1 - t 0 )(τ 22 )-(τ 2 -t 0 )(τ 11 )/(τ 2 −θ 2 )−(τ
1 −θ 1 )(12) is obtained. Multiplying both sides of this equation by β, we get β(t- t0 )=β( τ1 - t0 )β( τ2 - θ2 )-β( τ2 - t0 )β( τ1 - θ1 )/β(τ 2 −θ 2
)-β( τ1- θ1 )(13) That is, β(t- t0 )=(VM - 2Vn + VA1 )( VA2 - VB2 )-( VM- 2Vn + VA2 )( V A1 - V B1 )/(
V A2 - V B2 ) - (V A1 - V B1 ) (14). The right side of this equation can be obtained using an arithmetic operation and an amplifier. By measuring this voltage β(t-t 0 ), t° C. is known.

なお、式(11)の代りに、それから得られる、 τ−θ/τ−θ=t−θ/t−θ
(11′) を用いると、式(13)、(14)の代りに、その中の
τとθとを入れ変えた式が得られる。
Note that instead of formula (11), τ 1 −θ 12 −θ 2 =t−θ 1 /t−θ obtained from it
2 (11'), an equation can be obtained in which τ and θ are interchanged instead of equations (13) and (14).

4個の熱電対の非接触連接温度計では、温度θ
℃とθ℃とが等しくない状態であれば、これ
を変えて測定する必要はないが、変わつてもよ
い。しかも、グラフによるのではなく、温度を調
節するのでもないので、応答性は非常によい。
In a non-contact thermometer with four thermocouples, the temperature θ
If 1 ° C. and θ 2 ° C. are not equal, there is no need to change them for measurement, but they may be changed. Moreover, the response is very good because it does not depend on a graph or adjust the temperature.

而して、第7図には第5図に示した非接触連接
温度計の測温回路の一実施例が示されており、同
図中、第5図中に於けるものと同一の構成要素に
ついては同一の符号を付して示してある。
FIG. 7 shows an embodiment of the temperature measuring circuit of the non-contact thermometer shown in FIG. 5, and the same configuration as that in FIG. Elements are shown with the same reference numerals.

第7図中、1は連接温度tGに比例する電圧が
得られる回路であり、温度検出回路と演算回路と
で構成されている。基準温度t0は例えば0℃とす
る。感温部Rは白金測温抵抗体であり、その0℃
に於ける抵抗値R0は100Ωである。固定抵抗λの
抵抗値はR0の値に等しい。Aは反転増幅器、B
は減算器であり、この回路によりVM+Vnの出力
電圧が得られるる。
In FIG. 7, 1 is a circuit that can obtain a voltage proportional to the joint temperature tG , and is composed of a temperature detection circuit and an arithmetic circuit. The reference temperature t 0 is, for example, 0°C. The temperature sensing part R is a platinum resistance temperature detector, and its temperature at 0°C
The resistance value R 0 at is 100Ω. The resistance value of the fixed resistor λ is equal to the value of R 0 . A is an inverting amplifier, B
is a subtracter, and this circuit provides an output voltage of V M +V n .

2は温度θとτを検出するための回路であり、
それぞれ逆方向にシリーズに連結された二組の熱
電対から成つてる。その一端はτ,θ,τ
及びθの検出接点であり、他端は測温抵抗体R
と同一の連接部に連接され、tGに保たれてい
る。
2 is a circuit for detecting temperatures θ and τ;
It consists of two sets of thermocouples connected in series in opposite directions. One end is τ 1 , θ 1 , τ 2
and θ 2 detection contact, and the other end is a resistance temperature detector R
It is connected to the same connecting part as , and is maintained at t G .

3は、回路1と2からの出力を演算する回路で
ある。反転増幅器C、加算器G及びF、減算器D
及びI、乗算器E、並びに除算器Hで構成され、
前記式(14)の右辺の値を演算し、表面温度tに
比例する電圧を得る。
3 is a circuit that calculates the outputs from circuits 1 and 2; Inverting amplifier C, adders G and F, subtracter D
and I, a multiplier E, and a divider H,
The value on the right side of the equation (14) is calculated to obtain a voltage proportional to the surface temperature t.

2n個の熱電対を1個の抵抗温度計に連接した
非接触連接温度計は、n>2とすると、n個の非
接触連接温度計と同等である。これらのn個の非
接触連接温度計の2個の組合わせで温度t℃が得
られるので、各組合せで得られるt℃の平均をと
れば、4個(n=2のとき)のものよりも精度が
よい。しかし、繁雑にあることは止むを得ない。
A non-contact linked thermometer in which 2n thermocouples are connected to one resistance thermometer is equivalent to n non-contact linked thermometers if n>2. Temperature t℃ can be obtained by combining two of these n non-contact thermometers, so if you take the average of t℃ obtained from each combination, it will be higher than that of 4 (when n = 2). It also has good accuracy. However, the complexity is unavoidable.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は非接触熱電温度計の2個の測温接点の
位置を示す概略図であり、Fは被測温表面、Pは
加熱される金属薄板、Hはヒーター、Aは測温接
点、Bは補助温度測定の測温接点である。 第2図は、測温接点Aの温度τ℃と補助温度
(点Bの温度)θ℃との関係を示す図、第3図は
温度差(τ−θ)℃とτ℃との関係を示す図、第
4図は、2個の熱電対を1個の抵抗温度計に連接
したものの概念図、第5図は、4個の熱電対を1
個の抵抗温度計に連接したものの概念図である。
第6図は、第5図に示した非接触連接温度計の4
個の測温接点の配置を示す概略図、第7図は、第
5図に示した非接触連接温度計の測温回路の一実
施例を示すブロツク図である。第4,5図の破線
で囲まれた部分が連接部でその中にある測温抵抗
線Rおよび熱電対の測温接点でない方の端(第4
図のJA,J,JB、第5図のJA1,J1,JB1,J
A2,J2,JB2)の温度は連接温度tG℃である。
FIG. 1 is a schematic diagram showing the positions of two temperature-measuring junctions of a non-contact thermocouple, where F is the temperature-measuring surface, P is the thin metal plate to be heated, H is the heater, A is the temperature-measuring junction, B is a temperature measuring contact point for auxiliary temperature measurement. Figure 2 shows the relationship between temperature measurement junction A temperature τ°C and auxiliary temperature (temperature at point B) θ°C, and Figure 3 shows the relationship between temperature difference (τ-θ)°C and τ°C. Figure 4 is a conceptual diagram of two thermocouples connected to one resistance thermometer, and Figure 5 is a conceptual diagram of four thermocouples connected to one resistance thermometer.
It is a conceptual diagram of a device connected to two resistance thermometers.
Figure 6 shows 4 of the non-contact thermometer shown in Figure 5.
FIG. 7 is a block diagram showing an embodiment of the temperature measuring circuit of the non-contact thermometer shown in FIG. 5. FIG. The part surrounded by the broken line in Figures 4 and 5 is the connecting part, and the resistance temperature wire R and the end of the thermocouple that is not the temperature measuring junction (the fourth
J A , J , J B in the figure, J A1 , J 1 , J B1 , J in Fig. 5
A2 , J2 , JB2 ) is the joint temperature tG °C.

Claims (1)

【特許請求の範囲】[Claims] 1 2n個の熱電対から成るn個の非接触熱電温
度計と、上記2n個の熱電対に連接される1個の
抵抗温度計と、上記n個の非接触熱電温度計とし
ての補助温度をそれぞれ異なつた温度とする手段
と、それぞれの測定温度及び補助温度と基準温度
との差並びに両温度の差に比例する電圧を出力す
る演算、増幅器と、被測定温度を求めるため上記
演算、増幅器の出力を利用して被測定温度と基準
温度との差を求める演算、増幅器とによつて構成
される非接触連接温度計。
1 n non-contact thermocouple thermometers consisting of 2n thermocouples, one resistance thermometer connected to the 2n thermocouples, and auxiliary temperature as the n non-contact thermocouples. means for obtaining different temperatures; a calculation and amplifier for outputting the difference between each measurement temperature and the auxiliary temperature and the reference temperature; and a voltage proportional to the difference between the two temperatures; A non-contact thermometer consisting of an amplifier and an arithmetic operation that uses the output to determine the difference between the measured temperature and the reference temperature.
JP12459478A 1978-10-12 1978-10-12 Non-contact connected thermometer Granted JPS5551326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12459478A JPS5551326A (en) 1978-10-12 1978-10-12 Non-contact connected thermometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12459478A JPS5551326A (en) 1978-10-12 1978-10-12 Non-contact connected thermometer

Publications (2)

Publication Number Publication Date
JPS5551326A JPS5551326A (en) 1980-04-15
JPS6129447B2 true JPS6129447B2 (en) 1986-07-07

Family

ID=14889309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12459478A Granted JPS5551326A (en) 1978-10-12 1978-10-12 Non-contact connected thermometer

Country Status (1)

Country Link
JP (1) JPS5551326A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0431723A (en) * 1990-05-28 1992-02-03 Agency Of Ind Science & Technol Temperature-difference measuring device utilizing sheathed thermocouple

Also Published As

Publication number Publication date
JPS5551326A (en) 1980-04-15

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