Final report on the APMP comparison of capacitance at 100 pF (APMP supplementary comparison APMP.EM-S7)

Abstract

A comparison of capacitance at 100 pF was conducted between thirteen participating laboratories from the Asia-Pacific region. Measurements were made over the period 2004 to 2006. The behaviour of the travelling artefact was consistent with a steady linear drift at a rate of less than 0.1 µF/F per year. Despite the wide range of capabilities within the region, the results showed good agreement between all participating laboratories.Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.The final report has been peer-reviewed and approved for publication by the APMP, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

Estimating the long-term drift of travelling measurement standards for comparisons

“…Thirteen national laboratories participated in APMP.EM-K4.1 KC [14] and APMP.EM-S7 SC parallel comparisons [15] from June 2003 to May 2006 (35 months). The Andeen-Hagerling AH11A fused silica measurement standard of capacitance of 10 pF (APMP.EM-K4.1) and of 100 pF (APMP.EM-S7) at a frequency of 1 kHz and 1.592 kHz was used for the comparisons.…”

Support of metrological traceability of capacitance measurements in Ukraine

“…In 2003-2013, the specified comparisons became the basis for similar comparisons within the framework of different RMO. Within the framework of RMO of European countries, comparisons for the capacitance of 10 pF [14], RMO of American countries -for the capacitance of 10 pF [15] and 100 pF [16] took place. Within the framework of COOMET, the Ukrainian NMI participated in comparisons: for the capacitance of 10 pF on frequencies of 1 kHz and 1.592 kHz [17], for the capacitance of 100 pF on frequencies of 1 kHz and 1.592 kHz [18], and for the capacitances of 10 pF and 100 pF on a frequency of 1 kHz [19].…”

Validation for capacitance national standard based on long‐term monitoring results of standard capacitors

“…Measurements were taken with an rms voltage of 100 V and measurement frequency of 1.592 kHz which is commonly used for measurement of standard capacitors in the metrology field. International comparisons of capacitance also are carried out around this frequency [2]. As shown in Fig.…”

“…The National Metrology Institute of Japan (NMIJ) of the National Institute of Advanced Industrial Science and Technology has developed a new national standard of capacitance (capacitance standard) and also established its traceability system in Japan Calibration Service System (JCSS) based on the Measurement Law [1]. The calibration and measurement capabilities (CMCs) of the new capacitance standard were validated in the international comparison with foreign National Metrology Institutes (NMIs) [2]. This capacitance standard has been registered to the KCDB Appendix C (CMC registration), as its international equivalence was demonstrated in the technical peer review conducted by the expert researchers of NMIs of other countries [3].…”