Experimental Study of Digitizers Used in High-Precision Impedance Measurements

In the currently used primary impedance measuring systems, there is a need to compare standards with ratios different from 1:1, e.g., in order to transfer the value to multiples or submultiples of the basic quantity. Unfortunately, the commercial PXI sampling systems used to measure the voltage rati...

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Main Author: Krzysztof Musioł
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/11/4051
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author Krzysztof Musioł
author_facet Krzysztof Musioł
author_sort Krzysztof Musioł
collection DOAJ
description In the currently used primary impedance measuring systems, there is a need to compare standards with ratios different from 1:1, e.g., in order to transfer the value to multiples or submultiples of the basic quantity. Unfortunately, the commercial PXI sampling systems used to measure the voltage ratio in the impedance bridge, although they provide adequate resolution, show a considerable non-linearity of the measurement. This leads to significant error of the impedance ratio measurement. Experimental studies of commercial PXI digitizers used in primary impedance metrology are presented in the paper. The scope of the work includes presentation of the sampling measurement system hardware used in electronic synchronous impedance bridges and studies of the parameters that affect the applicability of PXI digitizers in high-precision measuring instruments. Nonlinearity errors of digitizers on boards NI PXI-4461 and NI PXI-4462 were measured and appropriate conclusions regarding possible corrections of the errors were drawn.
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spelling doaj.art-1a34b3be68b94742b2ebc140cd0e3a092023-11-23T13:59:31ZengMDPI AGEnergies1996-10732022-05-011511405110.3390/en15114051Experimental Study of Digitizers Used in High-Precision Impedance MeasurementsKrzysztof Musioł0Department of Measurement Science, Electronics and Control, Silesian University of Technology, 44-100 Gliwice, PolandIn the currently used primary impedance measuring systems, there is a need to compare standards with ratios different from 1:1, e.g., in order to transfer the value to multiples or submultiples of the basic quantity. Unfortunately, the commercial PXI sampling systems used to measure the voltage ratio in the impedance bridge, although they provide adequate resolution, show a considerable non-linearity of the measurement. This leads to significant error of the impedance ratio measurement. Experimental studies of commercial PXI digitizers used in primary impedance metrology are presented in the paper. The scope of the work includes presentation of the sampling measurement system hardware used in electronic synchronous impedance bridges and studies of the parameters that affect the applicability of PXI digitizers in high-precision measuring instruments. Nonlinearity errors of digitizers on boards NI PXI-4461 and NI PXI-4462 were measured and appropriate conclusions regarding possible corrections of the errors were drawn.https://www.mdpi.com/1996-1073/15/11/4051measurement systemPXI sampling systemdigitizerimpedance comparisonnonlinearity errors
spellingShingle Krzysztof Musioł
Experimental Study of Digitizers Used in High-Precision Impedance Measurements
Energies
measurement system
PXI sampling system
digitizer
impedance comparison
nonlinearity errors
title Experimental Study of Digitizers Used in High-Precision Impedance Measurements
title_full Experimental Study of Digitizers Used in High-Precision Impedance Measurements
title_fullStr Experimental Study of Digitizers Used in High-Precision Impedance Measurements
title_full_unstemmed Experimental Study of Digitizers Used in High-Precision Impedance Measurements
title_short Experimental Study of Digitizers Used in High-Precision Impedance Measurements
title_sort experimental study of digitizers used in high precision impedance measurements
topic measurement system
PXI sampling system
digitizer
impedance comparison
nonlinearity errors
url https://www.mdpi.com/1996-1073/15/11/4051
work_keys_str_mv AT krzysztofmusioł experimentalstudyofdigitizersusedinhighprecisionimpedancemeasurements