Emerson oxymitterdr hazardous area in-siu oxygen probe Heater Strut Assembly, Cell Replacement

Hazardous Area Oxymitter DR

Instruction Manual

IB-106-340CDR Original Issue January, 2002

WIRE

LOOP

V-DEFLECTOR

CERAMIC SUPPORT ROD

CERAMIC

DIFFUSER CELL FLANGE

ASSEMBLY

4

HEATER

		27540007
	Figure 4-3. Heater Strut Assembly
f.	Grasp the wire loop and carefully slide the	structions in paragraph 4-5steps c
	strut out of the probe tube (Figure 4-3).	through e.
g.	When replacing the strut, align the slot on	l. Follow the instructions in paragraph 4-3bto
	the heater plate with the calibration gas line	install the Hazardous Area Oxymitter DR
	in the probe tube. Slide the strut into the	into the stack or duct.
	probe tube. It will turn to align the hole on
	the back plate of the strut with the calibra-	4-7 CELL REPLACEMENT
	tion gas line. When the hole and the cali-
	bration gas line are aligned correctly, the	This paragraph covers oxygen sensing cell re-
	strut will slide in the rest of the way.	placement. Do not attempt to replace the cell
h.	Push down on the back plate of the strut to	until all other possibilities for poor performance
		have been considered. If cell replacement is
	make sure you have spring tension and	needed, order the cell replacement kit
	then install the pressure clamp (28) on the	(Table 7-1).
	back plate.	The cell replacement kit (Figure 4-4)contains a
i.	Install capillary breather tubes (23) and tube
		cell and flange assembly, corrugated seal,
	nuts (26) on the CAL, REF, and VENT	setscrews, socket head cap screws, and anti-
	ports.	seize compound. The items are carefully pack-
j.		aged to preserve precise surface finishes. Do
	Replace the CAL and REF gas silicon	not remove items from the packaging until they
	tubes.	are ready to be used. Spanner wrenches and
		hex wrenches needed for this procedure are
k.	Install the termination housing per the in-	part of an available special tools kit (Table 7-1).

Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 4-5