
Construção de uma fonte de corrente e de uma sonda para medida de condutividade pelo método da sonda de quatro pontas
2003; Brazilian Chemical Society; Volume: 26; Issue: 5 Linguagem: Inglês
10.1590/s0100-40422003000500020
ISSN1678-7064
AutoresOlacir Alves Araújo, Wilson Botter Júnior, J.F. Carvalho, E. L. Verde,
Tópico(s)Sensor Technology and Measurement Systems
ResumoPROBE METHOD.This paper describes the construction of an eletrical current source and of a probe to be used in the measurement of eletrical conductivity through a four-point probe method.These pieces of equipments can be obtained at the low price of US$ 50.00 and are adequate for eletrical conductivity measurements in the semiconductor range, that is from 10 -1 to 10 -6 S cm -1 .
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