Abstract: A gas leak detection system and method for detecting the presence of a leaking gas, such as helium. The apparatus consists of a housing containing an extended nozzle with a tip at the end. The housing contains an eccentric motor. The presence of a target gas is detected through a sensing element located in the leak detector, which sends a signal to the CPU. When the amount of the gas leak is over a threshold, the CPU sends a signal to an eccentric motor located in the housing causing the handle of the instrument to vibrate, thereby notifying the user that a leak has been detected. A signal is also preferably sent from the CPU to a light emitting diode (LED), as to visually notify the user as well, and to a speaker to audibly alert the user, both the vibrations and audio alarms can be turned on/off by a switch.