36 EL3060 CONTINUOUS GAS ANALYZERS | OI/EL3060-EN REV. A
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 28) and the analyzer unit (see page 30).
Design of the gas connections
Design of the gas connections: Internal flame barriers of stainless steel
1.4571 (SAE 316Ti) with ⅛ 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 fol-
lowing 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
Magnos28 or Caldos25 or Caldos27 analyzers is installed in the con-
trol 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 in-
stance 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, Magnos28,
Caldos25, Caldos27) or 100 l/h (Uras26).
Connecting the gas lines
Connect the stainless steel pipes to the fittings (flame barriers) profession-
ally and taking tightness requirements into consideration.
CAUTION
The maximum permissible tightening torque is 50 Nm. If this value is ex-
ceeded, the internal gas connections could be damaged. The explosion
protection could be impaired as a result.
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