Emerson Rosemount X-STREAM O2 Transmitter, Инструкция по эксплуатации

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Instruction Manual
IM-106-910C, Rev. 1.0
November 2009
2-5
Hazardous Area
X-STREAM O
2
Transmitter
MECHANICAL
INSTALLATION
Selecting Location
1. Figure 2-3 through Figure 2-10 provide reference illustrations for the
mechanical installations of the equipment.
2. The location of the X-STREAM O
2
Transmitter in the stack or flue is
most important for maximum accuracy in the oxygen analyzing process.
The X-STREAM must be positioned so the gas it measures is
representative of the process. Best results are normally obtained if the
X-STREAM is positioned near the center of the duct (40-60% insertion).
3. Wider ducts may require several X-STREAM units since the O
2
can vary
due to stratification. A point too near the wall of the duct, or the inside
radius of a bend, may not provide a representative sample because of
the very low flow conditions.
4. The sensing point should be selected so the process gas temperature
falls within a range of 0 to 704°C (32 to 1300°F).
5. The X-STREAM probe can operate to 850°C (1562°F) with an optional
Xi Enhanced Interface, though continued operation at these
temperatures will reduce cell and probe life. The temperature of the
integral electronics transmitter must not exceed 85°C (185°F) as
measured inside the electronics housing.
6. Check the flue or stack for holes and air leakage. The presence of this
condition will substantially affect the accuracy of the oxygen reading.
Therefore, either make the necessary repairs or install the X-STREAM
probe upstream of any leakage.
7. Ensure the area is clear of internal and external obstructions that will
interfere with installation and maintenance. Allow adequate clearance
for removal of the X-STREAM probe.
Do not allow the temperature of the X-STREAM electronics to exceed 85°C (185°F) or
damage to the unit may result.