Leak detection

A method for sensing a leak in a unit under test, comprising:

• scanning a SKU on a unit under test giving SKU information;
• sending the SKU information to a computer;
• connecting the unit under test to a testing apparatus;
• removing gas from an interior volume of the unit under test;
• monitoring a vacuum pressure within the interior volume of the unit under test until the vacuum pressure reaches a test pressure;
• initiating delivery of helium to an exterior of the unit under test through a helium gun by pulling a trigger on the helium gun to dispense helium therefrom;
• providing the helium gun comprising a motion detector, the motion detector comprising a first accelerometer and a second accelerometer;
• the helium gun including a nozzle having an opening therein for the dispensing of the helium therefrom;
• and
• the first accelerometer and the second accelerometer are disposed within the nozzle;
• positioning the helium gun so that helium is released over a weld of the unit under test;
• detecting a movement speed of the helium supply gun during dispensing of helium therefrom;
• and
• displaying a helium content internal to the unit under test on a graphical user interface.