National Physical Laboratory

Temperature & Humidity Publications & Guides

Our experienced team provides world-leading research into the development of innovative sensors, standards and measurement solutions, maintains ITS-90 and delivers calibrations against UK National Standards.

To find a specific NPL publication, please use the NPL Publications Search

Key publications

Strategy

Practical implementation of the Mise en Pratique for the definition of the kelvin above the silver point
Machin, G., Bloembergen, P, Anhalt, K., Hartmann, J., Sadli, M., Saunders, P., Woolliams, E.,Yamada, Y., Yoon, H.
Int. J. Thermophys., 31, pages 1779-1788 (2010) doi:10.1007/s10765-010-0834-5

Report of the new Kelvin dissemination workshop: 27-28 Oct 2010
Machin, G., del Campo, D., Fellmuth, B., Fischer, J., Gavioso, R., Lusher, C., Merlone, A., Mills, I., Pitre, L., de Podesta, M.
Metrologia, 48, pages 68-69 (2011)


Non-contact

Estimation of the degree of equivalence of the ITS-90 above the silver point between NPL, NIM and CEM using high temperature fixed points
Machin, G., Dong, W., Martín, M. J., Lowe, D., Yuan, Z., Wang, T., Lu, X.
Metrologia, 48, pages 196-200 (2011) doi:10.1088/0026-1394/48/3/014

Evaluation of methods for characterizing the melting curves of a high temperature cobalt-carbon fixed point to define and determine its melting temperature
Lowe, D., Machin, G.
Metrologia, 49, page 189 (2012) doi:10.1088/0026-1394/49/3/189

Reproducible metal-carbon eutectic fixed-points
Lowe, D., Yamada, Y.
Metrologia, 43, p135 (2006) doi:10.1088/0026-1394/43/2/S27


Contact

Improving temperature sensing for new reactors
Pearce, J. V., de Podesta, M., Elliott, C.J., Machin, G.
Nuclear Engineering International, Nov 2011, pages 18-20

A miniature high-temperature fixed point for self-validation of type C thermocouples
Ongrai, O., Pearce, J.V., Machin, G., Sweeney, S.
Meas. Sci. Tech., 22, pages 105103-105107 (2011) doi:10.1088/0957-0233/22/10/105103

Investigation of Pd-C cells to improve thermocouple calibration
Pearce, J. V., Edler, F., Elliott, C. J., Failleau, G., Morice, G. R., Ogura, H.
Metrologia, 48, pages 375-381 (2011) doi:10.1088/0026-1394/48/5/019


Humidity

The NPL Standard Humidity Generator - An analysis of uncertainty by validation of individual component performance
Stevens, M., Bell, S. A.
Measurement Science and Technology, 3, pages 943-952 (1992) doi:10.1088/0957-0233/3/10/002

The NPL Primary Gravimetric Hygrometer
Bell, S. A.
Papers and Abstracts from the Third International Symposium on Humidity and Moisture, 1, pages 20-27 (1998)
ISBN 0 946 754 24 1

A roadmap for humidity and moisture measurement
Bell, S., Benyon, R., Böse, N., Heinonen, M.
TEMPMEKO 2007, Int. J. Thermophys., 29 (5) pages 1537-1543 doi:10.1007/s10765-008-0419-8

Non-destructive moisture content measurement of bioabsorbable polymers used in medical implants
Carroll, P. A., Bell, S. A., Maxwell, A. S., Tomlins, P. E.
Proceedings of TEMPMEKO & ISHM 2010, Int. J. Thermophys., (Published online 1 May 2011) doi:10.1007/s10765-011-0981-3

Humidity, pressure and temperature measurements in an interdigitated-flow PEM hydrogen fuel cell
Bell, S., Hinds, G., de Podesta, M., Stevens, M., Wilkinson, J.
Proceedings of TEMPMEKO & ISHM 2010, Int. J. Thermophys., (Published online 23 September 2011) doi:10.1007/s10765-011-1095-7

A Guide to the Measurement of Humidity
Published by the Institute of Measurement and Control, 68, (1996)
ISBN 0-904457-24-9


Guides

Beginner's Guide to Temperature
Beginner's Guide to Humidity
Beginner's Guide to Measurement
Beginner's Guide to Uncertainty of Measurement
Guide to Measurement of Humidity

See all NPL Guides >>