Emerson Rosemount 370XA System Reference Manual page 51

System Reference Manual
7P00370-H01
The following image shows the carrier gas connector (1).
The carrier gas must be regulated from bottle pressure to 90 PSI (620
kPa) using a two-stage bottle regulator with stainless steel
diaphragms. Use a dual-stage regulator to ensure the outlet pressure
will not change with changes in the bottle pressure. Stainless steel
diaphragms are required to avoid contamination of the analytical
oven. Use ⅛-inch stainless steel tubing that is clean and free of
grease to connect from the carrier gas bottle manifold to the inlet of
the carrier gas drier (1) on the 370XA sample conditioning system (as
shown [show single stream and multi stream panels and indicate inlet
of drier). Before making the final connection to the sample system,
blow through the lines with helium for 30 seconds to remove any
contamination such as water or metal shavings from cutting the tube.
WARNING
Regulate the carrier gas to 90 PSI (620 kPa). Pressures higher than this may
damage the analyzer and cause an unsafe environment.
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370XA Gas Chromatograph
APRIL 2014