Mentoring Scheme Award

Application code: MSA 25-01-12

Guest working organisation: Laboratoire National de Métrologie et d’Essais (LNE) – France

Employing Organisation: Centro Español de Metrología (CEM) – Spain

Distributed temperature sensing (DTS) techniques with optic fibers

In this MSA a technician from CEM was trained in full characterization of Distributed temperature sensing (DTS)  systems in the LNE facilities. The activities were performer during 5 weeks.

The goal of this mentoring was to completely characterize a BLAST interrogator base on stimulated Brillouin Analysis distributed temperature sensing.

Key Achievements:

The BLAST interrogator was successfully calibrated following LNE procedures. In accordarnce to the IEC TC86/SC 86C/WG2 „Optical fiber sensors“ and IEC 61757 standards, that frame the metrological characterization of DTS systems.

THe results obtained are promising an open new ways of study at CEM regarding on exploiting new ways of discriminate the effects of strain in temperature measurements using DTS, including investing in the development of new infrastructure inspired in LNE facilities.

The CEM Brillouin interrogator has been full characterized in terms of temperature and strain. Key parameters unable to be measured at CEM are now measured. The technician has aquired experience in performong the characterization and has the knowledge to improve CEM facilities and provide better results in order to participate in interlaboratory comparisons base on DTS characterization.

Fig, 1: Tubular furnace at LNE to perform strain and temperature measurements.