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--The DS18B20 sensor calibration has been conducted using a fluke hart with a temperature chamber at the center for meteorology, climatology, and geophysics region III Denpasar. The calibration process is done by stabilizing the temperature in the chamber, then the temperature on the DS18B20 sensor and the standard thermometer in the chamber are read and compared. The setpoints used were 10 C, 20 C, 30 C and 40 C each set point was read four times. The results of the calculation of the standard deviation at each setpoint are ± 0,39 C, ± 0,12 C, ± 0,00 C, ± 0,00 C and the results of the uncertainty for each setpoint are 0,65 C, ± 0,20 C, ± 0,18 C, ± 0,18 C. The results of the DS18B20 sensor calibration using a fluke hart with a temperature chamber obtained the highest standard deviation value of ±0,39 C and the highest uncertainty value was 0,65 C. This value indicates that the DS18B20 sensor calibrated with a standard tool at the 10 C set point has not met the standard value applied by WMO, which is ±0.3 C. Keywords---calibration, DS18B20 sensor, fluke hart, temperature chamber.

DS18B20 sensor calibration compared with fluke hart scientific standard sensor