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Browsing by Author "Aibe, Valter Yoshihiko"

Browsing by Author "Aibe, Valter Yoshihiko"

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  • A practical and reliable method for large volume standard vessels calibration 
    Aibe, Valter Yoshihiko; Farias, Estela Cristina Cavalcante de; Gouveia, José Maurício Gomes; Farias, Maria Helena; Dutra, Max Suell; Belaidi, Hakima (2008)
    The calibration of volume standard vessels should be made under controlled environmental conditions. However, the capacity, size, model or installation mode of the volume standard vessel, sometimes can be a limitation to ...
  • Calibração de um vaso com um líquido diferente da água 
    Aibe, Valter Yoshihiko; Rodrigues, Cláudio Roberto da Costa; Santo Filho, Dalni Malta do Espírito; Santos Júnior, José Júlio Pinheiro dos; Barbosa, Alex Pablo Ferreira; Monteiro, Marcelo dos Santos; Santos, Paulo Roberto da Fonseca; Franco, Ana Maria Ribeiro; Debatin, Rosane Moreira; Amaral, Sergio Pinto; Belaidi, Hakima (2003)
    As medidas de capacidade de volume são utilizadas para comercialização de líquidos, para verificação e aprovação de modelos na metrologia legal, para calibração de medidores de vazão e totalizadores de volume, nos processos ...
  • Calibrations of tank prover with master flow meter and by weinhging methos using a mineral oil 
    Aibe, Valter Yoshihiko; Gouveia, José Maurício Gomes; Farias, Estela Cristina Cavalcante de; Silva, Eving da; Andrade, Emmanuel Paiva de; Belaidi, Hakima (2008)
    The calibrations of great tank provers are carried out by transferring water volume from other calibrated tank prover. In this article, we present the results of two different methods of calibrations of 0,5m3 tank prover ...
  • Implementation of double-timing pulse interpolation applied to compact piston provers 
    Jeronymo, Carlos Eduardo; Araújo, Sérgio Barros de; Aibe, Valter Yoshihiko; França, Ricardo dos Santos; Costa, Stella Regina Reis da; Belaidi, Hakima (2009)
    This work presents an electronic circuit for double-timing pulse interpolation applied to compact piston provers (also referred as small volume provers). Compact provers are usually employed to prove meters with pulsed ...
  • Measurement model diagram as a tool for modeling the calculation of uncertainty of measurement 
    Aibe, Valter Yoshihiko; Santo Filho, Dalni Malta do Espírito; Brandi, Humberto Siqueira; Oliveira, Luiz Eduardo Moreira Carvalho de; Aguiar, Paula Fernandes; Aquino Neto, Francisco Radler de; Santos, João Alberto Neves dos; Bernardes, Américo Tristão (2003)
    There are many types of diagrams that can represent interactions among many factors, and it`s difficult to describe most of them by words. A process of evaluation of uncertainty of measurement [1] can involve many physical ...
  • Metrological evaluation of the interlaboratorial comparison of the ultrasonic flowmeter calibration 
    Arantes, Walace Ferreira de; Orlando, Alcir de Faro; Aibe, Valter Yoshihiko; Farias, Maria Helena; Dutra, Max Suell; Belaidi, Hakima (2008)
    This work deals with the metrological evaluation of the same ultra-sonic flowmeter, when calibrated in two different calibrating systems, belonging, respectively, to two accredited laboratories, both operating according ...
  • Transient liquid temperature at thermometer surface caused by its heating effect 
    Aibe, Valter Yoshihiko; Mikhailov, Mikhail Dimitrov; Dutra, Max Suell; Belaidi, Hakima (2008)
    The calibration of solid volume using hydrostatic method needs the liquid temperature to be measured with high accuracy - resolution about 0.001 K. The solid has to be weighed in air and liquid to calculate the solid volume ...
  • Uncertainty calculus in metrology 
    Aibe, Valter Yoshihiko; Mikhailov, Mikhail Dimitrov; Garcia, Guilherme de Andrade; Pereira, Luiz Napoleão; Costa, Danielli Guimarães; Moreira, Giselle Cobiça; Nascimento, Paulo Roberto de Mesquita; Quintella, Heitor Luiz Murat de Meirelles; Belaidi, Hakima (2008)
    A new uncertainty calculus is introduced and implemented in Mathematica software system. Similarly to the complex and interval numbers, a new object x ± x called uncertainty number is introduced. The uncertainty calculus ...