A.D. Saputro, M. Yantidewi
This research was conducted to compare the temperature and humidity data presented by the BMKG against realtime data based on the DHT11 sensor readings in Kedunggalar, Ngawi. Data was collected for 14 days (8-21 September 2020) at the same time interval between 07-10 AM according to the data update on the BMKG website. Temperature and humidity readings are recorded periodically with the DHT11 sensor every second for one minute, so that 60 data generated every one day. The average temperature and humidity data produced by the DHT11 sensor is 29.18 ?C and 68.16% with a comparison of the average data from the BMKG website 28.79 ?C and 65.36%. So that from the comparison of direct measurements of DHT11 and from the website it has a sensor reading error against a temperature of 1.59 ?C and a humidity of 5.24%. The conclusion is that the measurement of temperature and humidity in Kedunggalar with the DHT11 sensor is very valid against the data on the BMKG website. Even though the humidity exceeds the accuracy limit of the DHT11 sensor which is a maximum tolerance value of 5%, on the other hand the temperature reading is very accurate because the tolerance value is less than 2 ?C. © Published under licence by IOP Publishing Ltd.
Jurusan Fisika, Universitas Negeri Surabaya, Indonesia
