Diseño y construcción de un dosificador electrónico aplicado a la industria de químicos de sanitización de alimentos.

Abstract

By working on this project an automatic dispenser was developed. This device is intended to be used in supermarket chains as well as food industries where chemical products are used for disinfection and sanitizing in order to reduce the percentage of food and common utensils contamination by putting together activating devices and sensors to maintain the appropriate fractions of Quaternary Ammonium chemical (AmCu) in parts for million (ppm) in a resulting blend of 2 Gal or 4 Gal; moreover, to identify malfunction or fluid leaks inside the device via temperature and humidity sensors. In order to evaluate the prototype performance, 40 laboratory experiments were executed, focusing in two variables: the volume of the resulting fluid and its respective chemical concentration. The procedure involved graded test tubes (resolution of 10 ml) and a reactive tape to measure the AmCu concentration. The obtained results include: relative average error under 1% and 2% to dose 4 Gal and 2 Gal, respectively; and the AmCu concentration contained within the allowed range, between 150 ppm and 200 ppm. The prototype achieved superiority in terms of portability, ease of use, accuracy and low cost when compared to other devices of similar functionality.

KEYWORDS: dosing, sanitation, user interface.