SU857744A1 - Method of resistance thermometer graduation - Google Patents
Method of resistance thermometer graduation Download PDFInfo
- Publication number
- SU857744A1 SU857744A1 SU792846025A SU2846025A SU857744A1 SU 857744 A1 SU857744 A1 SU 857744A1 SU 792846025 A SU792846025 A SU 792846025A SU 2846025 A SU2846025 A SU 2846025A SU 857744 A1 SU857744 A1 SU 857744A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- graduation
- thermometer
- resistance thermometer
- resistance
- temperature
- Prior art date
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
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Изобретение относитс к измерительной технике , в частности, к измерению температур с использованием шумов теплового возбуждени резисторов и проводников.The invention relates to a measurement technique, in particular, to temperature measurement using the thermal excitation noise of resistors and conductors.
Известен способ градуировки термометров сопротивлени , состо щий в измерении сопротивлени термометра и температуры среды, в которой размещен термометр, при зтом температура среды измер етс образцовым термометром 1.A known method for calibrating resistance thermometers is to measure the resistance of the thermometer and the temperature of the medium in which the thermometer is located, while the temperature of the medium is measured by the reference thermometer 1.
, Однако известный способ имеет невысокую точность градуировки, обусловленную неравномерностью температурного пол среды, в которой размещены градуируемый и образцовый термометры.However, the known method has a low calibration accuracy due to the uneven temperature field of the medium in which the calibrated and exemplary thermometers are located.
Наиболее близким к предлагаемому по технической сущности вл етс способ градуировки высокоомного термометра сопротивлени , состо щий в измерении его сопротивлени и определени по уровню теплового шума температуры среды, в которую помещен термометр (2.The closest to the proposed technical essence is a method of calibrating a high-resistance resistance thermometer, consisting in measuring its resistance and determining the level of thermal noise of the temperature of the medium in which the thermometer is placed (2.
Одшако известный способ имеет недостаточную точность градуировки, вследствие пр9веденн измерени в услови х аддитивных помех .However, the well-known method has insufficient calibration accuracy due to the measurement under the conditions of additive interference.
Цель изобретени - повышерше точности градуировки в услови х непериодических аддитивных помех.The purpose of the invention is to improve the accuracy of calibration under non-periodic additive noise conditions.
Поставленна цель достигаетс тем, что измер ют уровень положительных и отрицательных полувслн теплового шума, генер1фуемых сопротивлением градуируемото термометра, сравнивают их, и по уровн м поло7«эттельных и отрицательных полуволн в моменты их статистического равенства, определ ют температуру среды.This goal is achieved by measuring the level of positive and negative half-waves of thermal noise generated by the resistance of the thermometer being calibrated, comparing them, and determining the ambient temperature by the levels of half-wavelength and negative half-waves.
При отсутствии помех градуировку осуществл ют по уровню теплового шума О определ емого известной формулой НайквистаIn the absence of interference, the calibration is carried out according to the level of thermal noise O defined by the well-known Nyquist formula.
lQ -4KTRB.lQ -4KTRB.
где К - посто ла Больцмаиа;where K is the station of la Boltzmaia;
В - исследуема полоса частот. Абсолютна температура градуируемого термометра при этом равнаB - frequency band under study. The absolute temperature of the calibrated thermometer is equal to
Q ,Q,
ТT
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792846025A SU857744A1 (en) | 1979-12-03 | 1979-12-03 | Method of resistance thermometer graduation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792846025A SU857744A1 (en) | 1979-12-03 | 1979-12-03 | Method of resistance thermometer graduation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU857744A1 true SU857744A1 (en) | 1981-08-23 |
Family
ID=20861997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792846025A SU857744A1 (en) | 1979-12-03 | 1979-12-03 | Method of resistance thermometer graduation |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU857744A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7031861B2 (en) | 2003-03-26 | 2006-04-18 | Maquet Critical Care Ab | Apparatus and method for calibrating a resistance thermometer and gas analyzer employing same |
| US20210123821A1 (en) * | 2019-10-28 | 2021-04-29 | Beamex Oy Ab | Temperature calibrator with advanced functionality |
-
1979
- 1979-12-03 SU SU792846025A patent/SU857744A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7031861B2 (en) | 2003-03-26 | 2006-04-18 | Maquet Critical Care Ab | Apparatus and method for calibrating a resistance thermometer and gas analyzer employing same |
| US20210123821A1 (en) * | 2019-10-28 | 2021-04-29 | Beamex Oy Ab | Temperature calibrator with advanced functionality |
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