Emerson Process Management IB106-340 Section Installation, Mechanical Installation

Instruction Manual

Oxymitter 4000

IB-106-340 Rev. 2.4 April, 2001

SECTION 2

INSTALLATION

Before installing this equipment, read the “Safety instructions for the wiring and installation of this apparatus” at the front of this Instruction Bulletin. Failure to follow safety instructions could result in serious injury or death.

2-1 MECHANICAL INSTALLATION

a.Selecting Location

1.The location of the Oxymitter 4000 in the stack or flue is most important for maximum accuracy in the oxygen analyzing process. The Oxymitter 4000 must be positioned so the gas it meas- ures is representative of the process. Best results are normally obtained if the Oxymitter 4000 is positioned near the center of the duct (40-60% inser- tion). Longer ducts may require several Oxymitter 4000 units since the O2 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. The sensing point should be selected so the proc- ess gas temperature falls within a range of 32° to 1300°F (0° to 704°C). Figure 2-1through Figure 2-6provide mechanical installation references. The ambient temperature of the integral electronics housing must not exceed 149°F (65°C).

2.Check the flue or stack for holes and air leakage. The presence of this con- dition will substantially affect the accu- racy of the oxygen reading. Therefore,

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either make the necessary repairs or install the Oxymitter 4000 upstream of any leakage.

3.Ensure the area is clear of internal and external obstructions that will interfere with installation and maintenance ac- cess to the membrane keypad. Allow adequate clearance for removal of the Oxymitter 4000 (Figure 2-1or Figure 2-2).

Do not allow the temperature of the Oxymitter 4000 integral electronics to exceed 149°F (65°C) or damage to the unit may result.

b.Installation

1.Ensure all components are available to install the Oxymitter 4000. If equipped with the optional ceramic diffusion ele- ment, ensure it is not damaged.

2.The Oxymitter 4000 may be installed intact as it is received.

NOTE

An abrasive shield is recommended for high velocity particulates in the flue stream (such as those in coal- fired boilers, kilns, and recovery boil- ers). Vertical and horizontal brace clamps are provided for 9 ft and 12 ft (2.75 m and 3.66 m) probes to provide mechanical support for the Oxymitter 4000. Refer to Figure 2-6.

3.Weld or bolt adapter plate (Figure 2-5)onto the duct.

Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-1