Installing the Gas Analyzer 35
Connecting the Gas Lines
Position and Layout of the Gas Connections
The position and layout of the gas connections are shown in the
dimension drawings of the control unit (see page 26) and the analyzer
unit (see page 28).
Design of the Gas Connections
Design of the gas connections: Internal flame barriers of rust- and acid-
resistant steel 1.4571 with 1/8 NPT female thread
· Sample gas inlets and outlets
· Flowing reference gas with EL3060-Uras26 (option)
· Case purging (option)
· Pressure sensor (option)
The assignment of the gas connections in a supplied EL3060-Uras26
analyzer unit is documented in the analyzer data sheet.
Special safety measures for operation with positive pressure in the sample gas
feed path
For operation with positive pressure in the sample gas feed path, a
special version of the gas analyzer is required. This version is marked as
such by the information on the type plate: "Sample gas pressure, see
special conditions".
For operation with positive pressure in the sample gas feed path, the
following special safety measures must be observed:
· Additional vents are fitted (designed as sample gas flame barriers) in
order to protect the pressure-resistant housing:
· One vent in the control unit housing if one of the Magnos206 or
Caldos25 or Caldos27 analyzers is installed in the control unit,
· Two vents in the Uras26 analyzer unit housing.
The inner and outer vent openings must always remain open.
· If the sample gas outlet and inlet side are subject to positive
pressure, sample gas may flow from both sides in case of faulty
operation (for instance if the sample gas line in the analyzer
ruptures). In this case, it must be ensured that the total of the sample
gas flows from both sides do not exceed the maximum value of 80 l/h
(Magnos206, Caldos25, Caldos27) or 100 l/h (Uras26).
· To prevent an explosive mixture from forming in the sample gas feed
path, the sample gas feed path must be purged with inert gas before
flammable gases are introduced.
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