Emerson OCX 8800 Instruction Manual download pdf (Page 29)

Instruction Manual

IM-106-880, Rev 2.0

September 2009

OCX 8800

http://www..raihome.com

Section 2 Installation

Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-8

Pneumatic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-13

Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-24

MECHANICAL

INSTALLATION

Selecting Location

1. The location of the OCX 8800 in the stack or flue is most important for

maximum accuracy in the oxygen analyzing process. The probe must

be positioned so the gas it measures is representative of the process.

Best results are normally obtained if the transmitter is positioned near

the center of the duct (40-60% insertion). Longer ducts may require

several transmitters since the oxygen and combustibles 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

process gas temperature falls within the range of probe material used.

Figure 2-1 through Figure 2-5 provide mechanical installation

references. The ambient temperature inside the electronics housing

must not exceed 185°F (85°C).

2. Check the flue or stack for holes and air leakage. The presence of this

condition will substantially affect the accuracy of the oxygen and

combustibles readings. Therefore, either make the necessary repairs or

install the transmitter up stream of any leakage.

3. Ensure the area is clear of internal and external obstructions that will

interfere with installation and maintenance access to the unit. Allow

adequate clearance for the removal of the OCX 8800.

Before installing this equipment, read the "Safety instructions for the wiring and installation

of this apparatus" in Appendix A: Safety Data. Failure to follow the safety instructions could

result in serious injury or death.

The OCX88A can be installed in general purpose areas only. Do not install the OCX88A in

hazardous areas.

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Emerson OCX 8800 Instruction Manual Page 29