SU130211A1 - The method of measuring the temperature difference - Google Patents

The method of measuring the temperature difference

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Publication number
SU130211A1
SU130211A1 SU631715A SU631715A SU130211A1 SU 130211 A1 SU130211 A1 SU 130211A1 SU 631715 A SU631715 A SU 631715A SU 631715 A SU631715 A SU 631715A SU 130211 A1 SU130211 A1 SU 130211A1
Authority
SU
USSR - Soviet Union
Prior art keywords
measuring
temperature difference
bridge
thermometers
potentiometer
Prior art date
Application number
SU631715A
Other languages
Russian (ru)
Inventor
Ф.И. Пинский
А.А. Рябкин
бкин А.А. Р
Original Assignee
Ф.И. Пинский
А.А. Рябкин
бкин А.А. Р
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 Ф.И. Пинский, А.А. Рябкин, бкин А.А. Р filed Critical Ф.И. Пинский
Priority to SU631715A priority Critical patent/SU130211A1/en
Application granted granted Critical
Publication of SU130211A1 publication Critical patent/SU130211A1/en

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Description

Известны способы измерени  разности температур с помощью мостовой схемы, в каждое из плеч которой включены термометры сопротивлени .Methods are known for measuring the temperature difference using a bridge circuit, each arm of which includes resistance thermometers.

Предлагаемый способ отличаетс  от известных тем, что при измерени х определ ют отношение напр жений, одновременно замеренных потенциометрами , один из которых включен в измерительную диагональ моста, а второй подключен к сопротивлению, установленному в цепи питани  моста. Применение такого способа позвол ет повысить точность измерепий при использовании дл  питани  термометров нестабилизированного источника напр жени .The proposed method differs from the known ones in that the measurements determine the ratio of the voltages simultaneously measured by potentiometers, one of which is included in the measuring diagonal of the bridge, and the second is connected to the resistance established in the power supply circuit of the bridge. The use of such a method makes it possible to improve the accuracy of measurements when using thermometers of a non-stabilized voltage source for powering.

На чертеже изображена схема измерени  разности температур по предлагаемому способу.The drawing shows a scheme for measuring the temperature difference in the proposed method.

Измерение разности темнератур осуществл етс  четырьм  термометрами сопротивлени  - R, R, Rz и Ri, включенными в плечи мостовой схемы. Термометры, включенные в противоположные плечи моста, помещаютс  в одну измер емую точку, а разность темнератур определ етс  но отношению напр жени  (/i в измерительной диагонали моста к току в питающей диагонали моста или к падению напр жени  Uz, создаваемому этим током на посто нном сопротивлении 5- Напр жени  U и Lo измер ютс  потенциометром, чтобы исключить вли ние измерительного прибора на работу схемы. В качестве измерительного прибора может быть применен, например, электронный автоматический многоточечный потенциометр ЭПП-09. Так как масштаб дл  обоих этих напр жений на шкале потенциометра будет одинаков, то нет необходимости определ ть величину Ll и L/2 в единицах напр жени , и дл  вычислени  их отношени  могут быть вз ты значени  указанных напр н ений в делени х равномерной шкалы.The temperature difference is measured by four resistance thermometers — R, R, Rz, and Ri — included in the shoulders of the bridge circuit. Thermometers connected to the opposite shoulders of the bridge are placed at one measuring point, and the temperature difference is determined by the ratio of the voltage (/ i in the measuring diagonal of the bridge to the current in the supply diagonal of the bridge or to the voltage drop Uz generated by this current at a constant Resistance 5- Voltages U and Lo are measured by a potentiometer to eliminate the influence of the measuring device on the operation of the circuit. For example, the electronic automatic multipoint potentiometer EPP-09 can be used as a measuring device. The scale for both of these voltages will be the same on the potentiometer scale, it is not necessary to determine the magnitude of Ll and L / 2 in terms of voltage, and the values of these voltages in the divisions of the uniform scale can be taken to calculate their ratio.

Предлагаемый способ может быть использован также и с потенциометром , осушествл ющим измерение температуры термопарами. В этом случае, дл  исключени  вли ни  автоматически вводимой поправки наThe proposed method can also be used with a potentiometer that makes thermocouples measuring temperature. In this case, to eliminate the effect of the automatically entered correction on

температуру «свободных концов, одна из измерительных точек потенциометра закорачиваетс  и за нуль шкалы отчета U- и f/2 принимаютс  показани  прибора, соответствующие этой точке.the temperature of the free ends, one of the measuring points of the potentiometer is short-circuited and the instrument readings corresponding to this point are taken as zero of the U- and f / 2 report scales.

Предмет изобретени Subject invention

Способ измерени  разности температур с помощью мостовой схемы , в каждое из плеч которой включены термометры сопротивлени , отличающийс  тем, что, с целью повышени  точности измерений при использовании дл  питапи  термометров нестабилизированного источника напр жени , определ ют отношение напр жений, одновременно замеренных потенциометрами, один из которых включен в измерительную диагональ моста, а второй подключен к сопротивлению, установленному в цепи питани  мостаThe method of measuring the temperature difference using a bridge circuit, each arm of which includes resistance thermometers, characterized in that, in order to improve the measurement accuracy when using thermometers of an unstabilized voltage source for a thermometer, the ratio of voltages simultaneously measured by potentiometers is determined which is included in the measuring diagonal of the bridge, and the second is connected to the resistance installed in the power supply circuit of the bridge

-оо-oh

SU631715A 1959-06-22 1959-06-22 The method of measuring the temperature difference SU130211A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU631715A SU130211A1 (en) 1959-06-22 1959-06-22 The method of measuring the temperature difference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU631715A SU130211A1 (en) 1959-06-22 1959-06-22 The method of measuring the temperature difference

Publications (1)

Publication Number Publication Date
SU130211A1 true SU130211A1 (en) 1959-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU631715A SU130211A1 (en) 1959-06-22 1959-06-22 The method of measuring the temperature difference

Country Status (1)

Country Link
SU (1) SU130211A1 (en)

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