SU143246A1 - Method for automatic compensation of changes in sensitivity of differential thermocouple or thermopile with temperature - Google Patents

Method for automatic compensation of changes in sensitivity of differential thermocouple or thermopile with temperature

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Publication number
SU143246A1
SU143246A1 SU692576A SU692576A SU143246A1 SU 143246 A1 SU143246 A1 SU 143246A1 SU 692576 A SU692576 A SU 692576A SU 692576 A SU692576 A SU 692576A SU 143246 A1 SU143246 A1 SU 143246A1
Authority
SU
USSR - Soviet Union
Prior art keywords
temperature
thermopile
sensitivity
changes
automatic compensation
Prior art date
Application number
SU692576A
Other languages
Russian (ru)
Inventor
М.А. Каганов
Original Assignee
М.А. Каганов
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 М.А. Каганов filed Critical М.А. Каганов
Priority to SU692576A priority Critical patent/SU143246A1/en
Application granted granted Critical
Publication of SU143246A1 publication Critical patent/SU143246A1/en

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  • Measuring Temperature Or Quantity Of Heat (AREA)

Description

пары А а 1 + 2 Г АГ, где а. |3 - посто нные коэффициенты.pairs A a 1 + 2 G AG, where a. | 3 - constant coefficients.

Т, + Т. T, + T.

/ -среднее значение температуры спаев. № 143246- 2 ... -.t..л Напр жение, фиксируемое измерительным ют из соотношени : V-- -v -7-п--; - 7 . где R-p+Tg-/ is the average value of the temperature of junctions. № 143246-2 ... -.t..l The voltage recorded by the measuring loop from the relation: V-- -v -7-п--; - 7. where rp + tg-

противлений 2 и 3; и ГУ-соответственно сопротивлени  измерительного прибора и термопары; /i . Таким образом, подставл   значени  Afi, имеем:resistance 2 and 3; and PG, respectively, of the resistance of the measuring device and thermocouple; / i. Thus, substituting the values of Afi, we have:

))

1/ (г).дг,1 / (g) .dg

Jl  Jl

где К(Т) - коэффициент пропорциональности.where K (T) is the proportionality coefficient.

Оптимальное значение величины посто нного сопротивлени , включенного в цепочку, при котором коэффициент пропорциональности меньше всего отличаетс  в заданном интервале температур от посто нного значени , определ ют из услови :The optimum value of the constant resistance included in the chain, at which the proportionality coefficient differs least of all in a given temperature range from a constant value, is determined from the condition:

- I 1 / 1 ; 9 Р (о) Т , 1 I „ /т 9 II/ - |-р(/о).- I 1/1; 9 P (o) T, 1 I „/ t 9 II / - | - p (/ o).

где г - сопротивление 3; о - сопротивление 2;where g - resistance 3; about - resistance 2;

солютное значение температурного коэффициента сопротивлени  2; TO - среднее значение возможных изменений Т.salt value of temperature coefficient of resistance 2; TO is the average value of possible changes in T.

Описанный способ автоматической компенсации изменений чувствительности дифференциальной термопары или термобатареи с температурой может найти промышленное применение при точных измерени х перепадов температур дифференциальными термопарами в относительно узком диапазоне абсолютных значений температур.The described method of automatically compensating for changes in the sensitivity of a differential thermocouple or thermopile with temperature can find industrial application for accurate measurements of temperature differences by differential thermocouples in a relatively narrow range of absolute values of temperatures.

Предмет изобретени Subject invention

Способ автоматической компенсации из.мемений чувствительности дифференциальной термопары или термобатареи с температурой, отличающийс  тем, что, с целью повышени  точиости измерени  разности температур, параллельно измерительному прибору, включенному в цепь дифференциальной термопары или термобатареи, подсоедин етс  корректирующа  цепочка из последовательно соединенных посто нного сопротивлени  и сопротивлени  с отрицательным те1мпературныл1 коэффициентом.A method of automatically compensating for the sensitivities of the sensitivity of a differential thermocouple or thermopile with a temperature, characterized in that, in order to improve the accuracy of measuring the temperature difference, a correction circuit is connected in series between the differential thermocouple or thermopile and parallel to the measuring thermocouple resistances with a negative temperature coefficient of 1.

fT-г fT-g

т г t g

1 dp1 dp

-абР dT нрибором J, определ суммзрное значение со-abP dT with a set of J, determines the total value of

SU692576A 1961-01-10 1961-01-10 Method for automatic compensation of changes in sensitivity of differential thermocouple or thermopile with temperature SU143246A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU692576A SU143246A1 (en) 1961-01-10 1961-01-10 Method for automatic compensation of changes in sensitivity of differential thermocouple or thermopile with temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU692576A SU143246A1 (en) 1961-01-10 1961-01-10 Method for automatic compensation of changes in sensitivity of differential thermocouple or thermopile with temperature

Publications (1)

Publication Number Publication Date
SU143246A1 true SU143246A1 (en) 1961-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU692576A SU143246A1 (en) 1961-01-10 1961-01-10 Method for automatic compensation of changes in sensitivity of differential thermocouple or thermopile with temperature

Country Status (1)

Country Link
SU (1) SU143246A1 (en)

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