Calibration factor of thermistor mounts with coaxial connectors

Project Description

After consultation of the partners the comparison started in February 1998 and has continued smoothly during one year. Early in 1999 some delay occurred due to problems with the facilities at one laboratory. Their measurement period was moved to the end of the comparison.

The final measurements were done at NMi VSL in July 1999. Not before February 2000 the last measurement results for the EUROMAT project were submitted to the coordinator.

A concept Draft A report is written for discussion at the EUROMET HF experts meeting on 22-23 March 2000 in Brussels. This discussion is used for submitting a presentation at CPEM2000 and a paper to the special issue of IEEE I&M. The results are presented without revealing the actual calibration factors of the DUTs. The paper is published in IEEE Trans.Instrum.Meas. IM-50, pp.409-413, April 2001 (J.P.M. de Vreede et al., “International Comparison for RF Power in the Frequency Range up to 18 GHz“).

After the final measurements at NMi VSL the package is sent to NIST as start of the worldwide loop (GT-RF 98-1: CCEM.RF-K8.CL). This loop is finished in December 2000.

During the GT-RF meeting in 2000 and 2001 it is proposed and accepted to combine the two projects (Euromet 393 and GT-RF 98-1) and to produce only one report covering all participants. This report is now in preparation as Draft A report of CCEM.RF-K8.CL.

As a result of the discussion at the EUROMET HF experts meeting of 2000 it is proposed and later accepted to organize a follow-up comparison to investigate potential systematic deviations in the results of the EUROMET project. This project has the number 633 and is running at this moment.

The exercise should not take more time than one month per participant.

Final Report 2005-05-31

The comparison has been finisched and the report can be downloaded here>>.

Electricity and Magnetism (EM)
Dr Jan P.M. de Vreede, VSL (The Netherlands)
Coordinating Institute
VSL (Netherlands)
Further Partners