"He" Leak Detector
A Helium Leak detector, also known as
a Mass Spectrometer Leak Detector (MSLD), is used to locate and measure
the size of leaks into or out of a system or containing device. The
tracer gas, helium, is introduced to a test part that is connected to
the leak detector. The helium leaking through the test part enters through
the system and this partial pressure is measured and the results accurately
displayed on Pfeiffer products.