Helium Leak Detection
A helium mass spectrometer is an instrument commonly used to detect and locate small leaks. … It typically uses a vacuum chamber in which a sealed container filled with helium is placed. Helium leaks out of the container, and the rate of the leak is detected by a mass spectrometer.
Agilent VS Series
The Agilent Dry Leak Detectors use a mass spectrometer tuned to detect helium, which is used as a tracer gas to locate and/or measure very small leaks in enclosed devices or systems.