Abstract

ARRIETA-ALMARIO, Álvaro Angel  and  TARAZONA-CACERES, Rosa Liliana. Multipotenciostat System Based on Virtual Instrumentation. Ing. invest. y tecnol. [online]. 2014, vol.15, n.3, pp.331-337. ISSN 2594-0732.

To carry out this project an electronic multichannel system of electrochemical measurement or multipotenciostat was developed. It is based on the cyclic voltammetry measurement technique, controlled by a computer that monitors, by means of an electronic circuit, both the voltage generated from the Pc and supplied to an electrolytic cell, and the current that flows through the electrodes of it. To design the application software and the user interface, Virtual Instrumentation was used. On the other hand, to perform the communication between the multipotenciostat circuit and the designed software, the National Instruments NI9263 and NI9203 acquisition modules were used. The system was tested on a substance with a known REDOX property, as well as to discriminate and classify some samples of coffee.

Keywords : virtual instrumentation; data acquisition; multichannel system; voltammogram; basic multipotenciostat.