Authors :
Fernando Angel Ortega Hernandez; Jose Luis Hernandez Corona; Aldo Castañeda Salmoran
Volume/Issue :
Volume 7 - 2022, Issue 10 - October
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3hEsukm
DOI :
https://doi.org/10.5281/zenodo.7319087
Abstract :
The purpose of this project is the construction
of a portable digital chemical thermometer and its
comparison against analog thermometers to be applied
as an experimental instrument in the chemistry
laboratory where the temperature measurement is
carried out in different chemical substances by students
and teachers of the University. Technology of Tlaxcala.
This article describes the comparison made after the
construction of the digital chemical thermometer, a
project carried out by students of the Industrial
Maintenance career at the Technological University of
Tlaxcala. First, a plastic structure was manufactured in
a 3D printer, then an Atmel 328P microcontroller was
used to control the thermometer, a 128x64 OLED screen
to display the temperature, a J-type thermocouple
adapted with a MAX6633 was used as a sensor that is
responsible for obtaining temperature data and a
recharging module for a rechargeable 9V lithium-ion
battery.
Its purpose is to obtain a precise temperature
measurement of substances, thus being a more reliable
and easy-to-use measuring instrument for the student
community. Its design is a rectangular box-shaped
structure, this design was made in the Solid Works
design software, once the design was finished it was
exported to the Ultimaker software to print it in 3D,
then the different pieces were assembled by joining them
with bolts for later, assembling the electronic circuit
inside the box, programming the Atmel 328P
microcontroller, and finally calibrating the J-type
thermocouple. By performing comparative tests in ice
water up to the boiling point at different temperatures
against an analog mercury device, as well as a device of
alcohol, it was possible to observe a great similarity in
the values obtained, for which it was verified that the
thermometer works correctly, is reliable and meets the
needs of the university.
Keywords :
Temperature, thermocouple, measuring instrument, and thermometer.
The purpose of this project is the construction
of a portable digital chemical thermometer and its
comparison against analog thermometers to be applied
as an experimental instrument in the chemistry
laboratory where the temperature measurement is
carried out in different chemical substances by students
and teachers of the University. Technology of Tlaxcala.
This article describes the comparison made after the
construction of the digital chemical thermometer, a
project carried out by students of the Industrial
Maintenance career at the Technological University of
Tlaxcala. First, a plastic structure was manufactured in
a 3D printer, then an Atmel 328P microcontroller was
used to control the thermometer, a 128x64 OLED screen
to display the temperature, a J-type thermocouple
adapted with a MAX6633 was used as a sensor that is
responsible for obtaining temperature data and a
recharging module for a rechargeable 9V lithium-ion
battery.
Its purpose is to obtain a precise temperature
measurement of substances, thus being a more reliable
and easy-to-use measuring instrument for the student
community. Its design is a rectangular box-shaped
structure, this design was made in the Solid Works
design software, once the design was finished it was
exported to the Ultimaker software to print it in 3D,
then the different pieces were assembled by joining them
with bolts for later, assembling the electronic circuit
inside the box, programming the Atmel 328P
microcontroller, and finally calibrating the J-type
thermocouple. By performing comparative tests in ice
water up to the boiling point at different temperatures
against an analog mercury device, as well as a device of
alcohol, it was possible to observe a great similarity in
the values obtained, for which it was verified that the
thermometer works correctly, is reliable and meets the
needs of the university.
Keywords :
Temperature, thermocouple, measuring instrument, and thermometer.
