Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

(f)On the terminal strip, loosen the screws securing the customer- wired LINE IN and NEUTRAL leads to terminals L and N. Also, remove the customer-wired ground lead from the ground lug. Remove the leads from the terminal strip and slide them from the manifold through the line voltage conduit port.

(g)Next, loosen the screws of remote contact input terminals 1 and 2; 4- 20 mA terminals 3 and 4; and relay output terminals 7, 8, 9, and 10.

Remove the leads from the termi- nal strip and slide them from the manifold through the signal conduit port.

(h)Remove insulation to access the mounting bolts. Unbolt the Oxy- mitter 4000/SPS 4000 assembly from the stack and take the entire assembly to a clean work area.

(i)Allow the unit to cool to a comfort- able working temperature.

2.Replace.

(a)Bolt the Oxymitter 4000/SPS 4000 assembly to the stack and install insulation.

(b)Follow the instructions in para- graph 2-4to connect the line volt- age and signal leads to an Oxy- mitter 4000/ SPS 4000 assembly.

(c)Follow the instructions in para- graph 2-6to connect the calibra- tion gases and instrument air to an Oxymitter 4000/SPS 4000 assem- bly. Turn on the calibration gases at the cylinders and turn on instru- ment air.

(d)Restore power to the system.

c.Replace Entire Integral Electronics (with Housing)

NOTE

Only perform this procedure on units with integral electronics and without integrally-mounted SPS 4000 units. If it is necessary to replace the entire electronics on an Oxymitter 4000/ SPS 4000 assembly, contact Rosemount for further instructions.

NOTE

Recalibration is required whenever electronic cards or sensing cell is re- placed.

1.Follow the instructions in paragraph

9-4a.1to remove the Oxymitter 4000 from the stack or duct. If removing an Oxymitter 4000/SPS 4000 assembly, follow the instructions in paragraph 9-4b.1.

2.Remove the right housing cover un- covering the electronic assembly (Figure 9-5).

3.Depress and remove the J1 (cell and T/C) connector from the J1 socket. Loosen the three captive mounting screws on the microprocessor board (top board).

4.The J8 connector (heater leads) can be accessed by moving the J1 connector leads out of the slot on the microproc- essor board and sliding the electronic assembly partially out of the housing (Figure 9-6).

5.Squeeze the J8 connector on the sides and carefully remove. The electronic assembly can now be completely re- moved from the housing.

6.Remove the four screws (7, Figure 9-3)from the probe finned housing. The probe and the electronic housing can now be separated.

Rosemount Analytical Inc. A Division of Emerson Process Management

Maintenance and Service 9-9