Agilent Technologies VS Series Operation Manual page 150

VS Series Helium Mass Spectrometer Leak Detectors
Portable Sniffing Applications
Some applications require operators or technicians to look for leaks from a ladder, outdoors,
above or below ground, or in a densely constructed industrial facility or power plant. In
these cases, a mobile cart-mounted MSLD may not be practical. A truly portable unit such
as the PHD-4 is required. Some examples of such applications are:
Aircraft manufacturing and maintenance
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Power generating plants
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Pressurized pipelines
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Bioreactors and fermenters
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Petrochemical plants and refineries
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Underground tanks
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Large condensers or heat exchangers
B-10