SU474769A1 - Cell for measuring the differential thermoelectromotive force - Google Patents

Cell for measuring the differential thermoelectromotive force

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Publication number
SU474769A1
SU474769A1 SU1874977A SU1874977A SU474769A1 SU 474769 A1 SU474769 A1 SU 474769A1 SU 1874977 A SU1874977 A SU 1874977A SU 1874977 A SU1874977 A SU 1874977A SU 474769 A1 SU474769 A1 SU 474769A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cell
measuring
differential
thermoelectromotive force
melts
Prior art date
Application number
SU1874977A
Other languages
Russian (ru)
Inventor
Олег Петрович Головин
Сергей Павлович Яценко
Original Assignee
Институт Химии Уральского Научно-Го Центра Академии Наук Ссср
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Application filed by Институт Химии Уральского Научно-Го Центра Академии Наук Ссср filed Critical Институт Химии Уральского Научно-Го Центра Академии Наук Ссср
Priority to SU1874977A priority Critical patent/SU474769A1/en
Application granted granted Critical
Publication of SU474769A1 publication Critical patent/SU474769A1/en

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  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Description

1one

Изобретение относитс  к приборостроению и может быть использовано дл  измерени  одного из структурно-чувствительных свойств (дифференциальной термоэ.д.с.) при исследовани х структурных превращений в бинарных и многокомпонентных системах в жидком состо нии .The invention relates to instrumentation engineering and can be used to measure one of the structurally sensitive properties (differential thermal emf.) In studies of structural transformations in binary and multicomponent systems in the liquid state.

Известно устройство дл  измерени  дифференциальной термоэ.д.с., в котором кювета с изучаемым расплавом помещена в термоблоки, измерительные электроды наход тс  в контакте с расплавами в термоблоках, а дифференциальна  термоэ.д.с. вычисл етс  делением э.д.с. термопары «расплав-материал термоэлектрода на разность температур ее спаев.A device for measuring differential thermoelectric power is known, in which the cuvette with the studied melt is placed in thermoblocks, the measuring electrodes are in contact with the melts in the thermoblocks, and the differential thermoelectric power is. calculated by dividing emf thermocouple "melt-material of a thermoelectrode on the temperature difference of its junctions.

Однако известное устройство характеризуетс  низкой точностью и большим временем измерений .However, the known device is characterized by low accuracy and long measurement time.

Цель изобретени  - повыщение точности и сокращение времени измерений.The purpose of the invention is to increase the accuracy and reduce the measurement time.

Это достигаетс  тем, что исследуемые и эталонный расплавы электрически соединены в одном термоблоке проводником, не взаимодействующим с расплавами, наход щимис  в раздельных кюветах, а измерительные термоэлектроды введены в эти кюветы в другом термоблоке.This is achieved by the fact that the studied and reference melts are electrically connected in one thermoblock by a conductor that does not interact with melts located in separate cells, and the measuring thermoelectrodes are introduced into these cells in another thermoblock.

На чертеже представлена схема предлагаемой  чейки.The drawing shows the scheme of the proposed cell.

В нагреватель 1 помещены два термоблокаTwo heaters are placed in heater 1.

2 и 3. Изогнутые трубки 4,  вл ющиес  кюветами дл  расплавов, своими концами вставлены в термоблоки. Изучаемые 5 и эталонное 6 жидкие вещества заполн ют трубки 4 так, что2 and 3. Curved tubes 4, which are cuvettes for melts, are inserted with their ends into thermoblocks. Studied 5 and reference 6 liquid substances fill tubes 4 so that

их свободные поверхности наход тс  внутри термоблоков 2 и 3. В термоблоке 3 все расплавы электрически соединены проводниками 7. Термоэлектроды 8 и 9 наход тс  в контакте с изучаемыми 5 и эталонным 6 расплавамиtheir free surfaces are inside thermal blocks 2 and 3. In thermal block 3, all melts are electrically connected by conductors 7. Thermoelectrodes 8 and 9 are in contact with studied 5 and reference 6 melts

соответственно в термоблоке 2, имеют удлин ющую петлю 10 в рабочей зоне  чейки и покрыты изол цией 11. Концы трубок 4 закрыты пробками 12 из пористого материала. В термоблоки вставлены термопары 13 в защитной изол ции внутри металлических трубок , которые герметично вставлены в термоблоки 2 и 3. Термоэлектроды 8 подведены к переключателю 14. Чикровольтметр 15 служит дл  измерени  э.д.с. между термоэлектродами 8 и 9.accordingly, in the thermoblock 2, they have an extension loop 10 in the working area of the cell and are covered with insulation 11. The ends of the tubes 4 are covered with plugs 12 of porous material. Thermocouples 13 are inserted into thermoblocks in protective insulation inside metal tubes, which are hermetically inserted into thermoblocks 2 and 3. Thermoelectrodes 8 are connected to switch 14. Chikrovoltmetr 15 serves to measure the emf. between thermoelectrodes 8 and 9.

Ячейка работает следующим образом. Нагреватель 1 обеспечивает в термоблоках 2 и 3 температуры, отличающиес  на 10-20°С в разные стороны от температуры, на которойThe cell works as follows. The heater 1 provides in thermoblocks 2 and 3 temperatures that differ by 10-20 ° C in different directions from the temperature at which

производ т измерени  термоэ.д.с. Эта средн   температура и разность температур между термоблоками измер ютс  термоиарами 13. Все расплавы в термоблоке 3, благодар  проводникам 7, имеют одинаковый потенциал. Потенциалы других концов расплавов различныthermopower measurements are made. This average temperature and the temperature difference between the thermoblocks are measured by thermals 13. All melts in the thermoblock 3, due to the conductors 7, have the same potential. The potentials of the other ends of the melts are different.

SU1874977A 1973-01-23 1973-01-23 Cell for measuring the differential thermoelectromotive force SU474769A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1874977A SU474769A1 (en) 1973-01-23 1973-01-23 Cell for measuring the differential thermoelectromotive force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1874977A SU474769A1 (en) 1973-01-23 1973-01-23 Cell for measuring the differential thermoelectromotive force

Publications (1)

Publication Number Publication Date
SU474769A1 true SU474769A1 (en) 1975-06-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1874977A SU474769A1 (en) 1973-01-23 1973-01-23 Cell for measuring the differential thermoelectromotive force

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SU (1) SU474769A1 (en)

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