Development of CEM’s Traceable Magnetic Measurements Laboratory

Authors

  • Sergio Molto Centro Español de Metrología (CEM)
  • Yolanda Álvarez Sanmamed Centro Español de Metrología (CEM), Calle del Alfar 2, 28760, Tres Cantos, Spain
  • Javier Diaz de Aguilar Rois Centro Español de Metrología (CEM), Calle del Alfar 2, 28760, Tres Cantos, Spain
  • Marco Coïsson Instituto di Ricerca Metrologica (INRIM), Strada delle Cacce, 91, 10135, Torino, Italy
  • Vittorio Basso Instituto di Ricerca Metrologica (INRIM), Strada delle Cacce, 91, 10135, Torino, Italy
  • Robert Walsh National Standard Authority of Ireland (NSAI), Griffith Avenue Extension, Glasnevin, Dublin 11, D11 E527 Ireland
  • Orrie Larmour Trinity College Dublin (TCD), College Green, Dublin 2, Ireland
  • Oliver Power National Standard Authority of Ireland (NSAI), Griffith Avenue Extension, Glasnevin, Dublin 11, D11 E527 Ireland

DOI:

https://doi.org/10.21014/actaimeko.v14i2.2070

Keywords:

active magnetic field compensation, nuclear magnetic resonance, traceability, magnetic measurements

Abstract

The establishment of a magnetic measurements laboratory at CEM addresses the lack of a national reference standard in Spain, which could meet the stakeholders’ needs and ensure magnetic measurements traceability. The laboratory is equipped to measure both magnetic field intensity and magnetic flux density for direct current (DC) and alternating current (AC) up to 50 kHz. This capability is made possible by the development of primary Helmholtz coils standards for generating magnetic fields. Traceability is ensured throughout the use of a Nuclear Magnetic Resonance (NMR) sensor, which measures the DC magnetic field by providing a frequency signal linked to the frequency standard. For low and medium magnetic flux density measurements, the main source of uncertainty is due to the environmental magnetic fields, making the use of a cancellation system essential. To ensure measurement accuracy, an active compensation system is employed.

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Published

2025-06-27

Issue

Vol. 14 No. 2 (2025)

Section

Research Papers

License

Copyright (c) 2025 Sergio Molto, Yolanda Álvarez Sanmamed, Javier Diaz de Aguilar Rois, Marco Coïsson, Vittorio Basso, Robert Walsh, Orrie Larmour, Oliver Power

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