Ensuring global interoperability in thermometry: challenges and strategic considerations

Area of Science:

• Metrology
• Thermodynamics
• International Standards

Background:

• The 2019 redefinition of the kelvin necessitates new approaches to thermometry.
• Maintaining global interoperability and traceability in temperature measurement presents significant challenges.

Purpose of the Study:

• To explore the challenges in global thermometry standards post-kelvin redefinition.
• To examine the role of the Consultative Committee for Thermometry (CCT) and National Metrology Institutes (NMIs).

Main Methods:

• Discussion of the CCT's role in international temperature scales.
• Analysis of NMIs' evolving responsibilities and new measurement techniques.
• Examination of decentralized and quantum-based measurement technologies.

Main Results:

• The CCT is crucial for harmonizing international temperature standards.
• NMIs are increasingly important for disseminating advanced, intrinsically accurate sensors.
• Decentralized and quantum-based techniques are vital for in situ traceability.

Conclusions:

• Sustaining global thermometry interoperability requires collaborative efforts and a long-term CCT strategy.
• Advanced sensors are key to reliable, traceable temperature measurements across diverse applications.