Emerson 3000 World Class, Instruction Bulletin, Figure A-19.Removal of Optional Diffusor

Instruction Bulletin

Appendix A Rev. 3.9 May 2005

World Class 3000

PIN

WRENCH

RETAINER

OPTIONAL CERAMIC

DIFFUSION ELEMENT

SETSCREW

	HUB
CEMENT	CEMENT
PORT
	FILLET

VEE

DEFLECTOR

21240026

Figure A-19. Removal of Optional Diffusor

and Vee Deflector

PROBE TUBE

(NOT INCLUDED

IN KIT)

CORRUGATED

SEAL

CELL AND

FLANGE

ASSEMBLY

SOCKET HEAD

CAP SCREWS

CALIBRATION GAS

PASSAGE

g.Rub a small amount of anti-seize on both sides of new corrugated seal.

h.Assemble cell and flange assembly, corru- gated seal, and probe tube. Make sure the calibration tube lines up with the calibration gas passage in each component. Apply a small amount of anti-seize compound to screw threads and use screws to secure assembly. Torque to 55 in-lbs (4 N•m).

i.Apply anti-seize compound to threads of cell assembly, hub, and setscrews. Reinstall hub on cell assembly. Using pin spanner wrenches, torque to 10 ft-lbs (14 N•m). If applicable, reinstall vee deflector, orienting apex toward gas flow. Secure with setscrews and anti-seize compound. Torque to 25 in-lbs (2.8 N•m).

j.On systems equipped with an abrasive shield, install dust seal gaskets, with joints 180o apart.

k.Reinstall probe and gasket on stack flange. If there is an abrasive shield in the stack, make sure dust seal gaskets are in place as they enter 15o reducing cone.

l.Turn power on to electronics and monitor thermocouple output. It should stabilize at 29.3 ±0.2 mV. Set reference air flow at 2 scfh (56.6 L/hr). After probe stabilizes, calibrate probe per Instruction Bulletin applicable to your electronics package. If new components have been installed, repeat calibration after 24 hours of operation.

21240009

Figure A-20. Cell Replacement Kit

e.If contact assembly is damaged, replace contact and thermocouple according to paragraph A-13, Replacement of Contact and Thermocouple Assembly.

f.Remove and discard corrugated seal. Clean mating faces of probe tube and retainer. Remove burrs and raised surfaces with block of wood and crocus cloth. Clean threads on retainer and hub.

A-12 OPTIONAL CERAMIC DIFFUSION

ELEMENT REPLACEMENT

a.General

The diffusion element protects the cell from particles in process gases. It does not nor- mally need to be replaced because the vee deflector protects it from particulate erosion. In severe environments the filter may be broken or subject to excessive erosion. Ex- amine the diffusion element whenever re- moving the probe for any purpose. Replace if damaged.

A-18 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management