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  2. International Temperature Scale of 1990 - Wikipedia

    en.wikipedia.org/wiki/International_Temperature...

    Thermometer Calibration and interpolation strategy 0.65 3.2 1 Helium-3 vapor pressure thermometer: Vapor pressure–temperature relationship fixed by a specified function. [10] 1.25 2.1768: 1 Helium-4 vapor pressure thermometer: Vapor pressure–temperature relationship fixed by a specified function. [10] 2.1768: 5.0 1

  3. Mercury-in-glass thermometer - Wikipedia

    en.wikipedia.org/wiki/Mercury-in-glass_thermometer

    A maximum minimum thermometer, also known as Six's thermometer, is a thermometer which registers the maximum and minimum temperatures reached over a period of time, typically 24 hours. The original design contains mercury, but solely as a way to indicate the position of a column of alcohol whose expansion indicates the temperature; it is not a ...

  4. Calibration - Wikipedia

    en.wikipedia.org/wiki/Calibration

    The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the following: "Operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties (of the calibrated instrument or ...

  5. ASTM Subcommittee E20.02 on Radiation Thermometry

    en.wikipedia.org/wiki/ASTM_Subcommittee_E20.02...

    E2758-10 Standard Guide for Selection and Use of Wideband, Low Temperature Infrared Thermometers. E2847-11 Standard Practice for Calibration and Accuracy Verification of Wideband Infrared Thermometers

  6. National Institute of Standards and Technology - Wikipedia

    en.wikipedia.org/wiki/National_Institute_of...

    NIST had an operating budget for fiscal year 2007 (October 1, 2006 – September 30, 2007) of about $843.3 million. NIST's 2009 budget was $992 million, and it also received $610 million as part of the American Recovery and Reinvestment Act. [18] NIST employs about 2,900 scientists, engineers, technicians, and support and administrative personnel.

  7. Standard temperature and pressure - Wikipedia

    en.wikipedia.org/wiki/Standard_temperature_and...

    However, a common temperature and pressure in use by NIST for thermodynamic experiments is 298.15 K (25 °C, 77 °F) and 1 bar (14.5038 psi, 100 kPa). [4] [5] NIST also uses 15 °C (288.15 K, 59 °F) for the temperature compensation of refined petroleum products, despite noting that these two values are not exactly consistent with each other.

  8. Thermometer - Wikipedia

    en.wikipedia.org/wiki/Thermometer

    A thermometer is a device that measures temperature ... The NIST Industrial Thermometer Calibration Laboratory Archived 2016-07-22 at the Wayback Machine;

  9. Resistance thermometer - Wikipedia

    en.wikipedia.org/wiki/Resistance_thermometer

    The thermometers being calibrated are compared to calibrated thermometers by means of a bath whose temperature is uniformly stable. Unlike fixed-point calibrations, comparisons can be made at any temperature between −100 °C and 500 °C (−148 °F to 932 °F).

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