International Journal of Food Research
ISSN: 2056-9734
Vol. 7(1), pp. 1-15, January 2020
doi.org/10.33500/ijfr.2020.07.001



Low cost humidity generator system development for laboratory applications integrating a PID controller

MIttalo Pezzotti1,2, Alexander Saldarriaga2, Marco Moscatelli1, Alessandro Orro1, Matteo Gnocchi1 and Luciano Milanesi1

1Institute of Biomedical Technologies, Via F.lli Cervi 93-20090, Segrate (Mi) Italy.
2Physics School, National University of Colombia at Medellin, Street 59A # 63-20.

*To whom correspondence should be addressed. E-mail: ittalo.pezzotti@itb.cnr.it.

Received 04 July, 2019; Received in revised form 13 August, 2019; Accepted 16 August, 2019.

Abstract


Keywords:
Humidity, Electronic instruments, Environmental sensors, PID controllers.


The purpose of this work is to present the development of a laboratory device with a low cost approach, which allows generating humidity ramps in a closed chamber. This development was achieved by integrating an electronic system for the control of thermodynamic variables, applying the proportional-integral-derivative (PID) control mechanism. The developed system allows testing on sensors, cell cultures, bacteria or tissues, under conditions of humidity and time chosen by the user. The prototype allows changes to be made between a level of 100% relative humidity at 19% in the dehumidification stage and from 19 to 100% in the humidification stage, including the hardware needed to capture data in real time and monitor the variables of interest.

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