AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 35
Material required for the installation (not supplied)
Gas connections
• Threaded connections with ⅛ NPT threads and PTFE sealing tape
Fidas24: Only use threaded connections of metal!
Fidas24: Gas lines
Process gases, test gases and waste air
• PTFE or stainless steel tubes with 4 mm inside diameter and
PTFE or stainless steel tube with ≥ 10 mm inside diameter for waste air
• Tube fittings
• Pressure regulator
• Flow restrictor in the combustion gas supply line (see page 48)
• Shut-off valve in the combustion gas supply line (see page 48)
Sample gas
• Heated sample gas line (recommended: TBL 01) or
unheated sample gas line (PTFE or stainless steel tube with inside/
outside diameter 4/6 mm).
The fittings and O-rings-required for the connection are included in the
scope of supply and delivery of the gas analyzer.
Flowmeter
• In the Caldos25 and Uras26 analyzer modules with flowing reference gas,
a flowmeter with a needle valve must be installed in the sample gas line
and in the reference gas line, in order to adjust the flow rate in the two
lines to the optimum value.
Assembly
19-inch housing
• 4 oval head screws (Recommendation: M6; this depends on the cabinet/
rack system).
• 1 pair of mounting rails (execution depends on the cabinet/rack system).
Wall-mount housing
• 4 screws M8 or M10.
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