PROGRAMMABLE, AUTONOMOUS FIELD POTENTIOSTATE FOR MULTIPLE REAL-TIME TESTS

The present invention relates to a programmable, autonomous field potentiostate for multiple real time tests, of the type including an electrochemical cell with three electrodes, a first one being a work electrode, a second one being a reference electrode and a third one being an auxiliary electrode, said electrodes being exposed to a corrosive media. The field potentiostate is characterized in that it comprises a digital module including analogic digital converters, and coupling digital analogic-to-analogic module, which are connected to a micro-controller that receives information from, and transmits the same to, a reading and writing memory, and in that the micro-controller is programmed from an only read memory, and coupled to a peripheral controller which delivers signals to and receive the same from a real time clock, and in that the micro-controller may be removably connected to a computer through a series port, and in that the analogic module transmits a voltage differential which is received from the work electrode from the electrochemical cell, through a current-to-voltage converter and a filter, and in that the auxiliary electrode is handled by means of a differential amplifier coupled to a control stage and a power amplifier for correcting the reference electrode potential differential, which is obtained through an impedance separator. Potenciostato de campo, autonomo programable para pruebas multiples en tiempo real, del tipo que incluye una celda electroquímica con tres electrodos, uno de trabajo, uno de referencia y uno auxiliar, expuestos a un medio corrosivo caracterizado porque, comprende un modulo digital que incluye convertidores digital analogico y analogico digital de acoplamiento al modulo analogico y que están conectados a un microcontrolador que recibe y transmite informacion a una memoria de lectura y escritura, y por que el microcontrolador esta programado desde una memoria solamente de lectura y está acoplado a un manejador de periféricos que envía y recibe señales de un reloj de tiempo real y por que el microcontrolador puede conectarse remobiblemente a una computadora a través de un puerto serie y por que el modulo analogico le transmite un diferencial de voltaje que recibe del electrodo de trabajo de la celda electroquímica, a través de un convertidor de corriente a voltaje y un filtro, y que el electrodo auxiliar es manipulado por medio de un amplificador diferencial acoplado a una etapa de control y un amplificador de poten