SU685936A1 - Method of measuring temperature with aid of thermoresistive transducers - Google Patents
Method of measuring temperature with aid of thermoresistive transducersInfo
- Publication number
- SU685936A1 SU685936A1 SU772552556A SU2552556A SU685936A1 SU 685936 A1 SU685936 A1 SU 685936A1 SU 772552556 A SU772552556 A SU 772552556A SU 2552556 A SU2552556 A SU 2552556A SU 685936 A1 SU685936 A1 SU 685936A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- transducers
- thermoresistive
- aid
- measuring temperature
- temperature
- Prior art date
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
1one
Изобретение относитс к области измерительной техники и может быть использовано дл повышени точности измерени температуры терморезистивными преобразовател ми в широком диапазоне значений измер емых температур .The invention relates to the field of measurement technology and can be used to improve the accuracy of temperature measurement by thermo resistive transducers in a wide range of measured temperatures.
Известен способ измерени температуры электрическими термометрами сопротивлени , основанный на регулировании электрической мощности подогрева термометра сопротивлени Щ. По этому способу измерени температуры мопшость, подводима к термометру сопротивлени , регулируетс , а разность температур между термометром сопротивлени и окружающей средой поддерживаетс неизменной. Однако трудность контрол посто нства разности температур между термометром сопротивлени и окружающей средой в широком диапазоне измер емых температур не позвол ет полностью реализовать преимущества данного способа.The known method of measuring temperature by electrical resistance thermometers based on regulating the electrical power of heating the resistance thermometer Щ. By this method of measuring temperature, the dog moving to the resistance thermometer is regulated, and the temperature difference between the resistance thermometer and the environment is kept constant. However, the difficulty of controlling the constancy of the temperature difference between the resistance thermometer and the environment in a wide range of measured temperatures does not fully realize the advantages of this method.
Наиболее близким по технической сущности к изобретению вл етс способ измерени температуры перегрева обмоток злектромагнитныхThe closest to the technical essence of the invention is a method for measuring the superheat temperature of the windings of electromagnetic waves.
механизмов IzJ, заключающийс в пропускании тока через преобразователь, измерении выходного напр жени , последующем подогреве преобразовател импульсным током и измерении падени напр жени на нем.the IzJ mechanisms, which consist in passing current through the converter, measuring the output voltage, then heating the converter with pulsed current, and measuring the voltage drop across it.
Измерительный ток 1 регулируют до полу-. чени падени напр жени на обмотке iRo, равного заданному Uo, т.е. iRo Uo, где Uo const. Затем обмотке сообщаетс тепловое воздействие 0 , измен ющее ее сопротивление до RO RO ( 1 + ов ). При пропускании по нагретой обмотке установленного ранее тока I измер етс разность между новым падением напр жени IRQ и заданным напр жением Uo, т.е.Measuring current 1 is adjusted to half. The voltage drop across the winding iRo is equal to the specified Uo, i.e. iRo Uo, where Uo const. Then a thermal effect 0 is applied to the winding, changing its resistance to RO RO (1 + s). When passing the previously established current I across the heated winding, the difference between the new voltage drop IRQ and the set voltage Uo is measured, i.e.
AU iJ ;j-Uo«TRj,f 1г 9-ио Т1г„л0 ц, (о AU iJ; j-Uo "TRj, f 1g 9-io T1g" l0 c, (o
5five
Как видно из формулы (1), полученна разность напр жений пропорциональна измер емой температуре 9 и не зависит от начального сопротивлени обмотки RO- Поэтому нестабильность и начальный разброс сопротивлени RO не вли ют на результат измерени в .As can be seen from formula (1), the resulting voltage difference is proportional to the measured temperature 9 and does not depend on the initial resistance of the winding RO- Therefore, the instability and the initial spread of resistance RO do not affect the measurement result in.
Однако вли ние непосто нства температурного коэффи1шента на чувствительность термоHowever, the effect of the inadequacy of the temperature coefficient on the thermal sensitivity
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772552556A SU685936A1 (en) | 1977-12-07 | 1977-12-07 | Method of measuring temperature with aid of thermoresistive transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772552556A SU685936A1 (en) | 1977-12-07 | 1977-12-07 | Method of measuring temperature with aid of thermoresistive transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU685936A1 true SU685936A1 (en) | 1979-09-15 |
Family
ID=20736972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772552556A SU685936A1 (en) | 1977-12-07 | 1977-12-07 | Method of measuring temperature with aid of thermoresistive transducers |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU685936A1 (en) |
-
1977
- 1977-12-07 SU SU772552556A patent/SU685936A1/en active
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