2004
DOI: 10.1590/s0100-40422004000200023
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Multímetro interfaceado de baixo custo para aquisição de dados

Abstract: . Prof. Lineu Prestes, 748, 05508-900 São Paulo -SP Recebido em 14/3/03; aceito em 11/8/03A LOW COST MULTIMETER FOR DATA ACQUISITION. A digital multimeter (~U$ 240.00 on the national market) connected to a microcomputer by a RS-232 serial interface is proposed for data acquisition in equipment with analog output. Data are measured at the rate of 2 points per second and stored in text files by the software that accompanies the device, running in a Windows environment. The performance of the multimeter was verif… Show more

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Cited by 3 publications
(2 citation statements)
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“…This transduction can be carried out through a variety of physical and chemical principles, and in most cases, the resultant electrical quantity can be measured using a multimeter. Colorimetric (Acharya, Jayaraman, 1995;Richter, Rocha, Angnes, 2004;Rossi, He, Tubino, 2000;Wang, 2000), potentiometric (Barnard, 1968;Ooba, 1991;Richter, 2003;Sevilla, Alfonso, Andres, 1993;Vreman, 1994;Watanabe, 1997) and conductometric (Sevilla, Alfonso, Andres, 1993;Yue, Ngin, Hailin, 1996) systems based on a multimeter have been described in the literature.…”
Section: Introductionmentioning
confidence: 99%
“…This transduction can be carried out through a variety of physical and chemical principles, and in most cases, the resultant electrical quantity can be measured using a multimeter. Colorimetric (Acharya, Jayaraman, 1995;Richter, Rocha, Angnes, 2004;Rossi, He, Tubino, 2000;Wang, 2000), potentiometric (Barnard, 1968;Ooba, 1991;Richter, 2003;Sevilla, Alfonso, Andres, 1993;Vreman, 1994;Watanabe, 1997) and conductometric (Sevilla, Alfonso, Andres, 1993;Yue, Ngin, Hailin, 1996) systems based on a multimeter have been described in the literature.…”
Section: Introductionmentioning
confidence: 99%
“…Este sistema foi utilizado com sucesso em diferentes estudos [19][20][21][22][23][24][25] e tem como características principais, o baixo custo e a geração de uma vazão isenta de pulsação. Como desvantagens para este tipo de propulsão, os autores citam a possibilidade de alteração da vazão em função da variação da tensão da rede elétrica e do aquecimento do mini-compressor com o tempo de uso.…”
Section: Introductionunclassified