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TECHNICAL DESCRIPTION
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ETC303(1) BINOS E e (2.0) 02/2007
Rosemount Analytical
1.3.1 Internal Gas Paths
The materials used for the gas paths may be selcted to suit the intendend application. In
marking such selection the diffusion rates of the individual gas components, their corrosivity,
and the temperature and pressure of the sampled gas must be taken into account.
a) Gas Path Material
The physical and chemical properties of the sample gas and the operating conditions
(temperature and pressure) of the analyzer determine the materials which may be used for gas
paths and gas fittings.
Fittings
For standard applications the analyzers are provided with PVDF fitting, 6/4 mm. The analyzers
can be shipped with swagelok
®
fittings, stainless steel, 6/4 mm or 1/4" as option.
Additional fittings to be delivered on request, consult factory.
Tubing
For standard applications the analyzers are provided with Viton or PTFE tubing (6/4 mm).
Stainless steel tubing is available for one or two gas paths. Other configurations with ss tubing
may be provided on request. Special tubings may be on request after consulting factory.
Safety Filter
For standard applications the analyzers are provided with a safety filter (PTFE). This filter is no
substitute for a fine dust filter in the sample handling system.
INTERNAL GAS PATHS