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Wyszukujesz frazę "Galliana, Flavio" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Evaluation of a high-precision digital multimeter by the laboratory of calibration of multifunction electrical instruments of INRIM
Autorzy:
Galliana, Flavio
Lanzillotti, Marco
Powiązania:
https://bibliotekanauki.pl/articles/220993.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
digital multimeter
calibration
measurement uncertainties
low-frequency electrical measurements
performance index
measurement specifications
Opis:
A metrological verification of a high precision digital multimeter was made by the laboratory of calibration of programmable electrical multifunction instruments of the National Institute of Metrological Research (INRIM) in order to verify its accuracy and stability. The instrument had been tested for a period of six months for five low-frequency electrical quantities (DC and AC Voltage and Current and DC Resistance). Its stability and precision were compared with the accuracy specifications of the manufacturer. As a new approach, a performance index of the DMM was introduced and evaluated for each examined measurement point. The DMM showed a satisfactory agreement with its specifications to be considered at the level of other top-class DMMs and even better in some measurements points.
Źródło:
Metrology and Measurement Systems; 2019, 26, 2; 283-296
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of a commercial high resistance bridge and methods to improve its precision
Autorzy:
Mihai, Iulian
Capra, Pier Paolo
Galliana, Flavio
Powiązania:
https://bibliotekanauki.pl/articles/2173898.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high resistance measurements
dual source bridge
DSB
settle-time
measurement uncertainty
compatibility test
measurement noise
Opis:
At the National Institute of Metrological Research (INRIM) an evaluation of a commercial dual source high resistance bridge has been performed. Its two main measurement modes (single measurements and multiple measurements) have been investigated. The best settle time of a 10:1 measurement of high resistance ratio has been estimated to be about three times the time constant of the circuit involving the resistors. This constant, in turn, depends on the highest value resistor. By means of mathematical estimators, suitable numbers of the readings of the detector have been established in order to minimize noises. A compatibility test at 100 TΩ has shown that the best precision of the commercial bridge is achieved utilizing the multiple measurements mode with the auto update function. This mode also allows the characterization of a resistor as a function of the settle time. This characterization can be useful for the owner of the resistor who can request the laboratory to perform the calibration of the resistor with the settle time which is necessary for him.
Źródło:
Metrology and Measurement Systems; 2022, 29, 4; 701--718
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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