Emerson Process Management OXYMITTER 4000 instruction manual Electronic Assembly

Instruction Manual

IB-106-340C Rev. 4.1 July 2004

Hazardous Area Oxymitter 4000

(f)Restore power to the system; refer to paragraph 5-1or 6-1.When the probe is at operating temperature, calibrate the probe per paragraph 9-2.

NOTE

Recalibration is required whenever electronic cards or sensing cell is replaced.

b.Replacement of Entire Electronics (with Housing) – Hazardous Area Oxymitter 4000 with Integral Electronics.

1.Follow the instructions in paragraph 9-4ato remove the Hazardous Area Oxymitter 4000 probe from the stack or duct.

Do not force the probe housing when installing or removing from the inte- gral electrical barrier/feedthrough (Figure 9-3). Damage to the aluminum probe housing can occur.

2.	Remove four screws (22, Figure 9-3)
	and washers (21) from the probe tube
	assembly (23). Remove the probe tube
	assembly from the housing (11).
3.	Disconnect the heater and signal wire

6.Follow the instructions in paragraph 2-1bto install the Hazardous Area Oxymitter 4000 into the stack or duct.

Opening the electronic housing will cause the loss of ALL hazardous per- mits. Opening the electronics housing in hazardous areas may cause an explosion resulting in loss of property, severe personal injury, or death. It may be required to get a hot work permit from your company safety offi- cer before opening the electronic housing.

c.Electronic Assembly Replacement

Remove and replace the electronic assem- bly according to the following procedure.

1.Remove screw (18, Figure 9-3or Figure 9-4), cover lock (19), and cap- tive washer (20) securing cover (1). Remove the cover.

2.See Figure 9-5.Depress and remove the J1 (cell and T/C) connector from the J1 socket.

MOUNTING

SCREW

connectors from the mating connectors

on the heater strut assembly (32).

NOTE

HEATER T/C

DIAGNOSTIC HEATER

ALARMS O2 CELL CALIBRATION

CALIBRATION RECOMMENDED

SW2

ON

J1

The integral electrical barrier/feed- through is thread-locked into the elec- trical housing and cannot be removed.

4.	Make sure the O-ring (31) is in good
	condition. Replace O-ring if damaged.
5.	Make sure that the conduit port of the
	electronic housing is on the same side
	as the CAL and REF gas ports. Install
	four washers (21) and screws (22).

TEST

POINTS

INC INC

HIGH LOW

GAS GAS

DEC DEC

O2 CELL mV +

O2 CELL mv - HEATER T/C + HEATER T/C -

CAL

TEST GAS + PROCESS - % O2

TP1	J1
TP2
TP3
TP4	RED YEL GRN ORG
TP5
TP6

37270018

Tighten screws.

Figure 9-5. Electronic Assembly

9-10 Maintenance and Service Rosemount Analytical Inc. A Division of Emerson Process Management