A gas monitoring system plays an important role in almost all the chemical and process industries as it prevents accidents. Many of the existing gas monitoring systems employ distributive sensing, an expensive and a complex process. The system discussed in this paper presents an alternative approach which consists of a mobile robot capable of moving on its own with obstacle avoidance algorithm. It can quickly scan hazardous gasses, smoke, fire etc. in all the parts of an industrial complex and can immediately generate an alarm and send SMS to all the concerned people. © 2013 IEEE.