Sherwin Johanne D. Galceran^1,, Florence John H. Villarico¹, John Jeffrey C. Omao¹, Leona Carla P. Estaniel¹, Ian Jay P. Saldo¹, Jhovel Roy D. Calo¹, Mary Jade P. Dandoy¹

LPG leakage is a significant cause of fire hazards and a substantial danger to human life and property. There are many commercially available LPG leak sensors, however they are very expensive. Hence alternative is needed. Using Arduino board added with gas sensor can be a great option. Gas sensors, specifically MQ-2 and MQ-6 gas sensors can explosive gases, including other volatile compounds and molecules in the air. They are popular in industrial, commercial, and residential settings for controlling atmospheric conditions, preventing leaks, fire, poisoning, and explosion hazards. This study compared and evaluated the capability of an Arduino-based MQ-2 and MQ-6 LPG sensor in terms of the response time, returned ppm values, and if there is a difference in the ability of the MQ-2 and MQ-6 gas sensor to detect particles of LPG; in terms of response time, and returned ppm values. The study was quantitatively designed, focusing on the experimental approach and a descriptive explanation. In testing the efficiency and capability of an Arduino-based LPG sensor using an MQ-2 and MQ-6 gas sensor, the paper gathered a fully filled 11-kilogram Pryce Gas LPG tank for the test. The testing of both MQ-2 and MQ-6 gas sensors revealed their capability and excellent efficiency in detecting LPG gas. From the obtained results from the response time it shows that both sensors have no significant difference in responding to LPG gas. However, the results from the ppm value shows that MQ-6 is more sensitive compared to MQ-2 gas sensor, demonstrating a significant difference in terms of returned ppm values. Additionally, the results from the data revealed that the optimal distance for the placement of both sensors is 20 cm to 40 cm from the source of the gas.

Arduino, efficiency, gas sensor, LPG, MQ-2, MQ-6