Practical Aspects of Mastering the Verification of Temperature Standards of the 1st Category

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Аннотация

I have described the solution of a number of problems that arose during the development of verification of temperature standards of the 1st category. A refined procedure for determining inhomogeneity is proposed, additional requirements for external conditions during measurements are listed, and the permissible value of inhomogeneity is specified. It has been experimentally confirmed that the method established in the verification procedure for estimating the random component of the measurement error when verifying reference thermoelectric thermal converters of the 1st category underestimates the results obtained by 1.2–2.1 times.

The work can be useful for specialists involved in the verification of measuring instruments and temperature standards.

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Авторлар туралы

M. Golobokov

State Regional Center for Standardization, Metrology and Testing in the Novosibirsk Region

Хат алмасуға жауапты Автор.
Email: malachit_40@inbox.ru

PhD (Tech.), Leading Metrology Engineer of the Thermal Engineering Measurements Department

Ресей, Novosibirsk

Әдебиет тізімі

  1. MKSN.681118.013 RE Furnace of reference points of PRT-600-1100-2: User manual, Omsk, NPP Etalon, 2018.
  2. Freeze Point Furnace: User manual, USA, Fluke corp., 2018.
  3. GOST R 8.611–2024 SSM. Thermoelectric converters platinumrhodium-platinum reference of the 1st, 2nd and 3rd grades. Verification and calibration procedure.
  4. Uncertainty of calibration of a thermocouple by comparison with a sample thermocouple in a furnace; https://temperatures.ru/pages/neopredelennost_kalibrovki_termopary (acc.: 27.09.2024).
  5. GOST 8.461–2009 SSM. Thermal resistance converters made of platinum, copper and nickel. Verification procedure.
  6. GOST R 8.585–2001 SSM. Thermocouples. Nominal static conversion characteristics.
  7. Guidelines on the Calibration of Thermocouples EURAMET Calibration Guide N 8 Version 3.1, 2020; https://www.euramet.org/publications-media-centre/calibration-guidelines (acc.: 27.09.2024).
  8. Golobokov M.V. Software Rubin, Library Standard. Certificate of state registration of the computer program оf 6.11.2019 N 2019665207.
  9. GOST R 8.571–98 SSM. Resistance thermometers platinum reference of the 1st and 2nd grades. Verification procedure.

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Әрекет
1. JATS XML
Жүктеу
2. Fig. 1. Determination of temperature heterogeneity in the thermometer channel of the copper ampoule

Жүктеу (311KB)
Метадеректер
3. Fig. 2. The results of measurements of the EMF of the corresponding TEMF at the reference points and in the short circuit mode

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4. Fig. 3. Temperature of the free ends of the converter PPO

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5. Fig. 4. Block scheme of an automated workplace

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