Using LM35 sensor based on Arduino Uno R3 for Newton cooling process analysis of coffee solution.

The aim of this study is to determine the effect of dissolved coffee concentration on the cooling process and to calculate the value of the cooling constant for each coffee solution. During the cooling process, dissolved coffee temperatures are monitored using a temperature sensor that has been linked to the computer through Arduino Uno R3. The dissolved coffee temperature scor e at a 1 minute range will be read on IDE Arduino software and monitored through PLX-DAQ software. Based on the data of the cooling process in the dissolved coffee, the concentration of the dissolved does not affect the cooling process, but it does affect the value of cooling constant. The values of Newton's cooling constant of the dissolved coffee at concentration 6%, 7.67% and 10% are 22.24 x 10−3 s−1, 22.22 x 10−3 s−1, 20.11 x 10−3 s−1, respectively. These results indicate that Newton's cooling constant decreases as the concentration of the solution increases. [ABSTRACT FROM AUTHOR]