Author

Oijai Ongrai

Observed names: O Ongrai, O. Ongrai

Institution: National Institute of Metrology (Thailand)

Observed institutions: National Physical Laboratory, University of Surrey, National Institute of Metrology (Thailand)

ORCID: 0000-0001-6805-0248

Observed ORCID: 0000-0001-6805-0248

OpenAlex ID: A5037972864

A miniature high-temperature fixed point for self-validation of type C thermocouples

2011 · O Ongrai, J V Pearce, et al. · Measurement Science and Technology · 23

Self-validating type C thermocouples to 2300 °C using high temperature fixed points

2013 · J. V. Pearce, C. J. Elliott, et al. · AIP conference proceedings · 22

Self-validating thermocouples based on high temperature fixed points

2010 · J V Pearce, O Ongrai, et al. · Metrologia · 17

Miniature Co–C eutectic fixed-point cells for self-validating thermocouples

2010 · O Ongrai, J V Pearce, et al. · Measurement Science and Technology · 15

Comparative Study of Pt/Pd and Pt–Rh/Pt Thermocouples

2010 · O. Ongrai, J. V. Pearce, et al. · International Journal of Thermophysics · 12

Self-calibration of a W/Re thermocouple using a miniature Ru-C (1954 °C) eutectic cell

2013 · O. Ongrai, J. V. Pearce, et al. · AIP conference proceedings · 8

Multi-Mini-Eutectic Fixed-Point Cell for Type C Thermocouple Self-Calibration

2014 · O. Ongrai, J. V. Pearce, et al. · International Journal of Thermophysics · 5

Reliability of High-Temperature Fixed-Point Installations over 8 Years

2017 · C. J. Elliott, T. Ford, et al. · International Journal of Thermophysics · 2

Establishment of the Co-C Eutectic Fixed-Point Cell for Thermocouple Calibrations at NIMT

2017 · O. Ongrai, C. J. Elliott · International Journal of Thermophysics · 2

Final report on the APMP regional comparison of type R thermocouples calibration at Cu, Co-C and Pd fixed points, APMP.T-S16

2025 · F Jahan, M J Ballico, et al. · Metrologia

Collaborative Metrology Efforts for Sustainable Energy Solutions in the Asia-Pacific

2025 · Oijai Ongrai

Metrology for cqi-9: ensuring accuracy and reliability in heat treatment processes

2025 · Oijai Ongrai

Hybrid comparison of Co-C eutectic fixed-point cells for thermocouple calibration

2024 · Oijai Ongrai, Jonathan Pearce, et al. · AIP conference proceedings

Aluminum Mini-Cell for Thermocouple Self-Calibration

2019 · Oijai Ongrai · International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)

New Approaches to Improve Thermocouple Thermometry to 2000°C

2012 · O. Ongrai · Surrey Research Insight Open Access (The University of Surrey)

Works count: 15

Citation count: 106

H-index: 6

I10-index: 5