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BILATERAL KEY COMPARISON SIM.T-K6.5 ON HUMIDITY STANDARDS IN THE DEW/FROST-POINT TEMPERATURE RANGE FROM -30 °C TO +20
This key comparison evaluated dew/frost point temperature standards between the National Institute of Standards and Technology (NIST) and the Laboratorio Costarricense de Metrología (LACOMET). The study determined the degree of equivalence for humidity measurements.
Area of Science:
- Metrology
- Thermodynamics
- Atmospheric Science
Background:
- Regional Metrology Organizations (RMOs) facilitate international measurement harmonization.
- Accurate humidity measurements are critical for various scientific and industrial applications.
- Previous comparisons established baseline equivalence for dew/frost point measurements.
Purpose of the Study:
- To conduct a key comparison of dew/frost point temperature measurement standards between NIST (USA) and LACOMET (Costa Rica).
- To determine the degree of equivalence between the national metrology institutes' humidity standards.
- To report on the methodologies, standards, and uncertainty budgets involved in the comparison.
Main Methods:
- A key comparison protocol was developed and followed by both NIST and LACOMET.
- Humidity laboratory standards, including calibration procedures and uncertainty budgets, were documented for each institute.
- Dew/frost point temperatures were measured within the range of -30 °C to +20 °C.
Main Results:
- The comparison yielded data on the performance of NIST and LACOMET dew/frost point standards.
- Analysis of the acquired data allowed for the calculation of the degree of equivalence.
- The results provide a quantitative assessment of the agreement between the two metrology laboratories.
Conclusions:
- The degree of equivalence between NIST and LACOMET dew/frost point standards was established.
- The findings contribute to the overall reliability of humidity measurements within the RMO framework.
- This comparison supports the mutual recognition of measurement results between participating countries.
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