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Helium gas thermometer: Calibrated at three fixed points in this range and interpolated in a specified way. [11] 13.8033 1234.93 11 Platinum resistance thermometer: Resistance calibrated at various fixed points and interpolated in a specified way. Eleven distinct calibration procedures are specified. [8] 1234.93 3 Radiation thermometer
Guide to NIST: Author: Covahey, Virginia: Software used: Digitized by the Internet Archive: Conversion program: Recoded by LuraDocument PDF v2.65: Encrypted: no: Page size: 594 x 777 pts; 569 x 769 pts; 566 x 750 pts; 568 x 769 pts; 568 x 751 pts; 566 x 752 pts; 567 x 751 pts; 585 x 761 pts; 576 x 766 pts; 602 x 772 pts; Version of PDF format: 1.5
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.
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.
It standardises accreditation practices and procedures, recognising competent calibration facilities and assisting countries developing their own accreditation bodies. [2] ILAC originally began as a conference in 1977 to develop international cooperation for accredited testing and calibration results to facilitate trade. [ 51 ]
B40.200 provides guidelines for bimetallic-actuated, filled-system, and liquid-in-glass thermometers. It also provides guidelines for thermowells. PTC 19.3 provides guidelines for temperature measurement related to Performance Test Codes with particular emphasis on basic sources of measurement errors and techniques for coping with them.
ASTM Subcommittee E20.02 on Radiation Thermometry is a subcommittee of the ASTM Committee E20 on Temperature Measurement, a committee of ASTM International.The subcommittee is responsible for standards relating to radiation or infrared (IR) temperature measurement.
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 ...
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