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Recent Developments in the Capacitance Calibration Services at the National Institute of Standards and Technology

Published

Author(s)

Yui-May Chang, Summerfield B. Tillett

Abstract

Since 1994 a bank of four 10 pF oil-bath type fused-silica dielectric capacitors has been maintained in the NIST Impedance Calibration Laboratory for use as reference standards to assign values to the secondary reference and check standards used for performing calibrations on customer's standards. The values of the reference standards in this bank are determined via comparisons with a 10 pF air-bath type fused-silica capacitor from the NIST primary capacitance laboratory. This laboratory maintains the U. S. capacitance unit in a primary bank of 10 pF oil-bath type, fused-silica dielectric capacitors, traceable to the NIST calculable capacitor. The database for these reference standards is now established and the algorithms for maintaining their values with statistical prediction methods are developed. Also discussed is a preliminary investigation of the frequency dependence of the transfer standard, which significantly affects the present capacitance calibration uncertainties.
Proceedings Title
1998 National Conference of Standards Laboratories Workshop and Symposium (NCSL)
Conference Dates
July 19-23, 1998
Conference Location
Albuquerque, NM

Keywords

calibration uncertainties, capacitance standards, direct comparisons, frequency dependence, fused-silica capacitors, reference standards, regression analysis, transfer standards

Citation

Chang, Y. and Tillett, S. (1998), Recent Developments in the Capacitance Calibration Services at the National Institute of Standards and Technology, 1998 National Conference of Standards Laboratories Workshop and Symposium (NCSL), Albuquerque, NM, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=123 (Accessed February 21, 2024)
Created June 30, 1998, Updated October 12, 2021