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Design and Implementation of Thermal Converter for AC Volt Measurement: Characteristics, Modeling and Confirmation - Couverture souple

Ali, Rasha S.M.

 
9783659115721: Design and Implementation of Thermal Converter for AC Volt Measurement: Characteristics, Modeling and Confirmation
Couverture souple
ISBN 10 : 365911572X ISBN 13 : 9783659115721
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

There are several designs and techniques for measuring the ac voltage. The ac-dc thermal transfer standards represent the common method for measuring the ac voltage accurately in terms of the dc voltage. The single junction thermal converter (SJTVC) is widely used as thermal transfer standard. It is to be noted that the SJTVC is mainly an electric resistor (heater) whose temperature is sensed by a standard thermocouple. This device has an input which is ac voltage and an output signal represented by the output voltage of the thermocouple. This thermal converter suffers from many drawbacks such as, it has low dc output voltage requiring accurate milli-voltmeter to measure it. This leads to high uncertainty and not very high accuracy of ac voltage measurement. These drawbacks are studied and treated in this thesis through fabricating of modified designs TVCs. The suggested solution depends on three different electrical connections of a number of new single junction vacuum thermocouples their heaters leads gathered in three groups; Series, Parallel and Series/Parallel arrangements. The modified TVCs are implemented entirely in National Institute for Standards (NIS), Egypt.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

There are several designs and techniques for measuring the ac voltage. The ac-dc thermal transfer standards represent the common method for measuring the ac voltage accurately in terms of the dc voltage. The single junction thermal converter (SJTVC) is widely used as thermal transfer standard. It is to be noted that the SJTVC is mainly an electric resistor (heater) whose temperature is sensed by a standard thermocouple. This device has an input which is ac voltage and an output signal represented by the output voltage of the thermocouple. This thermal converter suffers from many drawbacks such as, it has low dc output voltage requiring accurate milli-voltmeter to measure it. This leads to high uncertainty and not very high accuracy of ac voltage measurement. These drawbacks are studied and treated in this thesis through fabricating of modified designs TVCs. The suggested solution depends on three different electrical connections of a number of new single junction vacuum thermocouples their heaters leads gathered in three groups; Series, Parallel and Series/Parallel arrangements. The modified TVCs are implemented entirely in National Institute for Standards (NIS), Egypt.

Biographie de l'auteur

Rasha S. M. Ali born on 2nd of August, 1979. Graduated from Faculty of Engineering, Ain Shams University from 2001. I worked as researcher in the national institute for standards from 2003 in the electrical quantities metrology laboratory. The master degree was taken from Faculty of Engineering, Ain Shams University in 2005 and the Ph.D in 2009.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
365911572X
ISBN 13 
9783659115721
Reliure
Broché
Nombre de pages
204
Coordonnées du fabricant
non disponible
Personne responsable
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