GUIDE TO THE REALISATION OF CAPACITANCE AND INDUCTANCE SCALES USING DIGITAL TECHNIQUES

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F21%3AN0000025" target="_blank" >RIV/00177016:_____/21:N0000025 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

GUIDE TO THE REALISATION OF CAPACITANCE AND INDUCTANCE SCALES USING DIGITAL TECHNIQUES

Popis výsledku v původním jazyce

Electrical impedance is one of the most widely measured electrical quantities. Its measurement is important not just in electrical science but in fields ranging from life sciences to nanostructure characterisation. There is a need for a reliable, robust measurement infrastructure to support these measurements. The calibration of working instruments is usually accomplished using artefact standards of capacitance, inductance and resistance. National metrology institutes and high level calibration laboratories must maintain a local reference scale of impedance in order to support the calibration of these impedance standards. At the highest level of accuracy the impedance scales are realised using transformer ratio bridges which are complex, purpose-built, labour-intensive measuring systems beyond the means of all but the most advanced laboratories. Recently, with the advent of high-resolution analogue-to-digital (ADC) and digital-to-analogue converters (DAC) it has been shown that it is possible to maintain impedance scales with the requisite accuracy using digital impedance bridges (DIB). This good practice guide has been developed within EMPIR project 17RPT04 VersICaL “A versatile electrical impedance calibration laboratory based on digital impedance bridges”. It is intended to provide in a coherent and compact form information concerning the design and construction of digital impedance bridges which can achieve relative measurement uncertainties at the 10-6 or 10-5 level for the calibration of artefact impedance standards. It is intended primarily for those who wish to establish such a measurement set-up.

Název v anglickém jazyce

GUIDE TO THE REALISATION OF CAPACITANCE AND INDUCTANCE SCALES USING DIGITAL TECHNIQUES

Popis výsledku anglicky

Electrical impedance is one of the most widely measured electrical quantities. Its measurement is important not just in electrical science but in fields ranging from life sciences to nanostructure characterisation. There is a need for a reliable, robust measurement infrastructure to support these measurements. The calibration of working instruments is usually accomplished using artefact standards of capacitance, inductance and resistance. National metrology institutes and high level calibration laboratories must maintain a local reference scale of impedance in order to support the calibration of these impedance standards. At the highest level of accuracy the impedance scales are realised using transformer ratio bridges which are complex, purpose-built, labour-intensive measuring systems beyond the means of all but the most advanced laboratories. Recently, with the advent of high-resolution analogue-to-digital (ADC) and digital-to-analogue converters (DAC) it has been shown that it is possible to maintain impedance scales with the requisite accuracy using digital impedance bridges (DIB). This good practice guide has been developed within EMPIR project 17RPT04 VersICaL “A versatile electrical impedance calibration laboratory based on digital impedance bridges”. It is intended to provide in a coherent and compact form information concerning the design and construction of digital impedance bridges which can achieve relative measurement uncertainties at the 10-6 or 10-5 level for the calibration of artefact impedance standards. It is intended primarily for those who wish to establish such a measurement set-up.

Druh

V_souhrn - Souhrnná výzkumná zpráva

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/8B18014" target="_blank" >8B18014: A versatile electrical impedance calibration laboratory based on digital impedance bridges</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Počet stran výsledku

144

Místo vydání

—

Název nakladatele resp. objednatele

—

Verze

—