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TECHNICAL DESCRIPTION
ETC00781(4) Series 100 e 02/2004
1.3.1 Internal Gas Paths
The materials used for the gas paths are selected according to the application. In marking such
selection the diffusion rates of the individual gas components, their corrosivity, and the tempera-
ture and pressure of the sampled gas must be taken into account.
a) Gas Path Material
The physical and chemical properties of the sampled gas and the operating conditions
(temperature and pressure) of the analyzer determine the materials which are used for gas paths
and gas fittings.
Safety Dust Filter
All analyzers are equipped with a PTFE safety dust filter. This filter is no substitute for the necessary
dust filter to be provided with sample handling systems (described in chapter 5.2).
Fittings
As standard the analyzers are provided with PVDF fittings, 6/4 mm. The analyzers can be delivered
with swagelok
®
fittings, stainless steel, 6/4 mm or 1/4" as option.
Additional fittings are delivered as special options.
Tubing
As standard the analyzers are provided with Viton tubings or PTFE tubings (6/4 mm).
Additional tubings (e.g. stainless steel) are delivered as special options.
INTERNAL CONSTRUCTION