Overview of measurements capabilities in radiation thermometry at CEM (Spain)

M J Martin,J M Mantilla,D Del Campo,Sandrine Gazal

doi:10.1051/metrology/201918001

Abstract

CEM (Spanish National Institute of Metrology) is responsible for the maintenance and dissemination of the temperature national standards. Nowadays, the CEM Radiation Thermometry Laboratory disseminates and maintains the International Temperature Scale of 1990 (ITS-90) from the Ag fixed point (961.78 °C) to 2800 °C, using Ag or Cu fixed points as reference and standard radiation thermometers (RTs) working at a wavelength of 650 nm. CEM is also able to provide traceability to the new definition of the kelvin and to perform measurements of thermodynamic temperature from 400°C to 2800°C with different RTs (wavelengths of 650 nm, 900 nm and 1550 nm) using absolute and relative primary radiation thermometry. In addition the Radiation Thermometry laboratory performs calibration of RTs working in the usual infrared ranges (1 μm and 10 μm) from – 40°C to 1600°C.

Highlights

The CEM Temperature Division is responsible for the development, maintenance and dissemination of the thermodynamic temperature unit: the.The Radiation Thermometry Laboratory is long experienced in the dissemination and maintenance of the International Temperature Scale of 1990 (ITS-90) from the silver fixed point (961.78 °C) to 2800 °C
The Radiation Thermometry Laboratory is long experienced in the dissemination and maintenance of the ITS-90 from the silver fixed point (961.78 °C) to 2800 °C
CEM has participated in the assignment of the thermodynamic temperature to the Cu, Co-C, Pt-C and Re-C fixed points in the frame of the InK EMRP project and has performed measurements of the difference between the thermodynamic temperature t and the temperature defined by the ITS-90, t90 in the frame of the InK2 EMPIR Project [1], [2]

Summary

Introduction

The CEM Temperature Division is responsible for the development, maintenance and dissemination of the thermodynamic temperature unit: the. The Radiation Thermometry Laboratory is long experienced in the dissemination and maintenance of the ITS-90 from the silver fixed point (961.78 °C) to 2800 °C. CEM has participated in the assignment of the thermodynamic temperature to the Cu, Co-C, Pt-C and Re-C fixed points in the frame of the InK EMRP project and has performed measurements of the difference between the thermodynamic temperature t and the temperature defined by the ITS-90, t90 (from 420 °C to 1100 °C) in the frame of the InK2 EMPIR Project [1], [2]. Variable temperature blackbodies (VTBBs) or high stability lamps are used as sources to measure linearity. The variable temperature blackbodies available at the laboratory are: In the range from 960 °C to 2200 °C: CHINO IRR80 furnace (10 mm diameter aperture). In the range of 2000 °C to 2800 °C a BB3200 furnace (12 mm diameter aperture)

Description

Conclusions

InK2 EMPIR Project “Implementing the new kelvin