Agilent Technologies Helium User Manual page 171

Technical Information
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

Power generating plants

Pressurized pipelines

Bioreactors and fermenters

Petrochemical plants and refineries

Underground tanks

Large condensers or heat exchanger

Agilent Helium Leak Detector User Manual 171