Emerson Process Management Installation Guide for Hazardous Area Oxymitter Equipment

Instruction Manual

Hazardous Area Oxymitter 4000

IB-106-340C Rev. 4.1 July 2004

SECTION 2

INSTALLATION

The Hazardous Area Oxymitter 4000 and probe abrasive shield are heavy. Use proper lifting and carrying proce- dures to avoid personal injury.

Install all protective equipment covers and safety ground leads after installa- tion. Failure to install covers and ground leads could result in serious injury or death.

2-1 MECHANICAL INSTALLATION

a.Selecting Location

1.The location of the Hazardous Area Oxymitter 4000 in the stack or flue is most important for maximum accuracy in the oxygen analyzing process. The Hazardous Area Oxymitter 4000 must be positioned so the gas it measures is representative of the process. Best results are normally obtained if the Hazardous Area Oxymitter 4000 is positioned near the center of the duct (40 to 60% insertion). Longer ducts may require several Hazardous Area 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 0° to 704°C (32° to 1300°F). Figure 2-1through Figure 2-5provide mechanical installation references.

The ambient temperature of the elec- tronics housing must not exceed 70°C (150°F). For higher ambient tempera- tures, we recommend the remote mounted electronics option.

2

NOTE

At temperatures up to 85°C (185°F) inside the housing, the infrared keypad will cease to function, but the transmit- ter will continue to operate properly.

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

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

Do not allow the temperature of the Hazardous Area Oxymitter 4000 elec- tronics to exceed 85°C (185°F) or dam- age to the unit may result.

b.Probe Installation

1.Ensure all components are available to install the Hazardous Area Oxymitter 4000. If equipped with a ceramic dif- fuser, make sure the diffuser is not damaged.

2.The Hazardous Area Oxymitter 4000 probe 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 boilers).

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

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