Automated module for characterization of reference standards of capacitance by impedance-matrix method

An automated module has been developed, implemented, and validated for the characterization of four- terminal-pair capacitance standards using an impedance-matrix method. These air-dielectric capacitance standards are being used as reference or transfer standards of capacitance at high frequency across national metrology institutes worldwide. In the reported work, an automated characterization module performs the acquisition of reference capacitance and residual capacitive parameters from an ultraprecision capacitance bridge. It also acquires single-port reactances of the capacitance standard from an impedance analyzer at frequencies ranging from 40 MHz to 100 MHz. The acquired capacitive and reactance parameters are stored structurally in arrays from where they are further analyzed according to the impedance-matrix method. The frequency characteristics of four-terminal-pair capacitance standards are thereafter estimated up to 10 MHz and are presented through a user-friendly interface. An automated module provides a reliable, precise, and efficient way to control the frequency characterization of reference standards of capacitance. The reported work emphasizes the importance of automated modules to control complex procedures, which are involved in the advancement of metrology.

PDF

___

[1] Batagelj V, Bojkovski J, Drnovsek J. Software integration in national measurement-standards laboratories. Sci Meas Technol IET 2008; 2: 100-106.
[2] Azaklar S, Korkmaz H. A remotely accessible and con gurable electronics laboratory implementation by using LabVIEW. Comput Appl Eng Educ 2010; 18: 709-720.
[3] Kim DJ, Fisk Z. A LabVIEW based template for user created experiment automation. Rev Sci Instrum 2012; 83: 123705.
[4] Zulki i MZ, Harun SW, Thambiratnam K, Ahmad H. Self-calibrating automated characterization system for depressed cladding EDFA applications using LabVIEW software with GPIB. IEEE T Instrum Meas 2008; 57: 2677-2681.
[5] Weng Z, Zhou R. Design and Simulation of Temperature Measurement Circuit Based on LabVIEW and Multisim. In: 2011 Second International Conference on Mechanic Automation and Control Engineering. 2011. 5689-5692.
[6] Babita B, Sharma DK, Satish S, Ansari MA, Saxena AK. A versatile automation program using LabVIEW for low dc current measurement. JSIR 2014; 73: 91-94.
[7] Gu J, Jin L, Qin S, Wang X, Xu Z. Researching on the automatic impedance measurement system. 2005 Int Conf Electr Mach Syst 2005; 3.
[8] Elliott C, Vijayakumar V, Zink W, Hansen R. National Instruments LabVIEW: A Programming Environment for Laboratory Automation and Measurement. JALA - J Assoc Lab Autom 2007; 12: 17-24.
[9] Callegaro L, Durbiano F. Four-terminal-pair impedances and scattering parameters. Meas Sci Technol 2003; 14: 523-529.
[10] Ozkan T, Gulmez G, Turhan E, Gulmez Y. Four-terminal-pair capacitance characterization at frequencies up to 30 MHz using resonance frequencies. Meas Sci Technol 2007; 18: 3496-3500.
[11] Satish S, Babita B, Khurana B, Kumar S, Saxena AK. Evaluation of four-terminal-pair capacitance standards using electrical equivalent circuit model. Measurement 2015; 73: 121-126.
[12] Suzuki K. A new universal calibration method for four-terminal-pair admittance standards. IEEE T Instrum Meas 1991; 40: 420-422.
[13] Avramov-Zamurovic S, Koffman AD, Oldham NM, Waltrip BC. The sensitivity of a method to predict a capacitor's frequency characteristic. IEEE T Instrum Meas 2000; 49: 398-404.
[14] Satish S, Kumar S, Babita B, John T, Saxena AK. Evaluation of air dielectric four-terminal-pair capacitance standards using resonance frequency of impedance elements. Measurement 2017; 100: 176-182.
[15] Satish S, Kumar S, Babita B, John T, Saxena AK. Realization of coaxial reference air-lines as high frequency capacitance standard at CSIR-NPL. Measurement 2016; 92: 166-171