Emerson World Class 3000 Manual de instrucciones descargar pdf (Pagina 83)

Instruction Manual

Appendix AX Rev. 2.1

February 1998

Rosemount Analytical Inc. A Division of Emerson Process Management Appendices A-15

World Class 3000

16. Consult Safety Data Sheet 1M03226

then turn power on to electronics and

monitor thermocouple output. It should

stabilize at 29.3 mV ±0.2 mV. Calibrate

probe per Instruction Bulletin applica-

ble to your electronics package.

A-13 REPLACEMENT OF CONTACT AND

THERMOCOUPLE ASSEMBLY

Use heat resistant gloves and clothing

when removing probe junction box

and inner probe assembly. Do not at-

tempt to work on these components

until they have cooled to room tem-

perature. Probe components can be as

hot as 800°C (1500°F). This can cause

severe burns.

Before carrying this procedure, con-

sult Safety Data Sheet 1M03226.

a. Follow the cell removal procedure in para-

graph A-3, steps a, b, c, and d. Using heat

resistant gloves and clothing, remove cover

setscrew (24, Figure A-1) and junction box

lid (23). Squeezing tabs on hose clamps,

remove hoses from inner probe assembly,

Figure A-14. Remove 4 screws which se-

cure the inner probe assembly to the junc-

tion box. Disconnect all inner probe

assembly wires from the terminal block

(Figure A-10). Pull inner probe assembly

free from junction box. Set on bench and

allow to cool to room temperature.

b. Use a pencil to mark locations of spring

clips on ceramic rod, Figure A-15.

c. Pry or squeeze tabs on spring clips, and

pull contact and thermocouple assembly out

of probe assembly. Retain spring clips and

spring; replace if damaged.

P00013A

PROBE

JUNCTION BOX

HOSE

CLAMP

BACKPLATE

MOUNTING

SCREW

HOSE

Figure A-14 Probe Junction Box Mechanical

Connections

P00014A

STRUT

HEATER

SCREWS

GUIDE

LOOPS

SPRING

CLIP

BACKPLATE

MOUNTING

HARDWARE

CONTACT AND

THERMOCOUPLE

ASSEMBLY

Figure A-15. Inner Probe Replacement (Heater,

V-Strut, and Backplate Assembly)

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 157 158

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