The spectrometer tube is connected to a vacuum pumping system and operates under high vacuum; an auxiliary roughing pump evacuates the object to be tested and a sample of the gas being pumped enters the spectrometer tube. The operator sprays the outside with a fine jet of helium; if a leak exists, the helium enters through the flaw due to the pressure differential and is immediately sensed by the mass spectrometer tube. Since air contains only a relatively insignificant amount of helium, helium will enter the leak detector only in the event of a leak that has been probed. The entire object may be blanketed with helium gas for a quick total leakage test, or the exact position of a leak may be found by probing with a fine spray of helium.
Vacuum Instruments Corporation is a pioneer in providing state-of-the-art leak detection solutions for diverse applications and industries. Our systems have ensured the safety and performance of countless products that we use in our daily lives from the cars we drive to the air conditioners in our houses, the pacemakers in our bodies, and the satellites we launch into space.
