Emerson Process Management OXYMITTER 4000 instruction manual Orienting the Optional Vee Deflector

Hazardous Area Oxymitter 4000

Instruction Manual

IB-106-340C Rev. 4.1 July 2004

4.If using the optional ceramic diffusion element, the vee deflector must be cor- rectly oriented. Before inserting the Hazardous Area Oxymitter 4000, check the direction of flow of the gas in the duct. Orient the vee deflector so the apex points upstream toward the flow (Figure 2-6). This may be done by loosening the setscrews and rotating the vee deflector to the desired posi- tion. Retighten the setscrews.

5.In vertical installations, ensure the system cable drops vertically from the Hazardous Area Oxymitter 4000 and the conduit is routed below the level of the electronics housing. This drip loop minimizes the possibility that moisture will damage the electronics. See Figure 2-7.

6.If the system has an abrasive shield, check the dust seal gaskets. The joints in the two gaskets must be staggered 180 degrees. Make sure the gaskets are in the hub grooves as the Hazard- ous Area Oxymitter 4000 slides into the 15 degree forcing cone in the abrasive shield.

NOTE

8.Ensure the Hazardous Area Oxymitter 4000 is properly earthed by way of both internal and external points.

2

Uninsulated stacks or ducts may cause ambient temperatures around the electronics to exceed 85°C (185°F), which may cause overheating damage to the electronics.

9.If duct work insulation is removed for Hazardous Area Oxymitter 4000 probe mounting, make sure the insulation is replaced afterward. See Figure 2-7.

NOTE

For probe temperatures that will exceed 85°C (185°F), we recommend the remote mounted electronics option.

10.Ensure the probe installation does not obscure the warnings on the housing covers.

GAS FLOW

DIRECTION

VEE

DEFLECTOR

If process temperatures will exceed 200°C (392°F), use anti-seize com- pound on the stud threads to ease future removal of the Hazardous Area Oxymitter 4000.

7.Insert probe through the opening in the mounting plate and bolt the unit to the plate.

NOTE

To maintain CE compliance, ensure a good connection exists between the mounting plate studs or earthing screws on electronics housing and earth.

APEX

CERAMIC

DIFFUSION

ELEMENT

FILTER

SETSCREW

VEE

DEFLECTOR

27540009

Figure 2-6. Orienting the Optional Vee Deflector

Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-7