Agilent Technologies G6600-90006 manual Ncd

Assembling the Dual Plasma Burner for Component Replacement with the

NCD

	The following procedure can be used to assemble the Dual Plasma Burner for
	use with the NCD or for replacement of Burner components, such as ceramic
	tubes. Refer to Figure 2 on page 27 for proper part nomenclature. Note that the
	lower section of the NCD Burner is identical to the lower section of the SCD
	Burner.
	While the use of 1/4" ferrules is optional with the SCD, the quartz tube used in the NCD
N O T E
	Burner is more fragile and the use of 1/4" graphite ferrules is highly recommended.
	1 Slide the 0.066" internal diameter (I.D.) double taper ferrule onto the lower
	Burner tube. The tube should extend approximately 2 mm past the end of
	the ferrule.
	2 Insert the lower Burner tube and double taper ferrule into the Burner inlet
	fitting.
	3 Slide the 1/4" Burner adapter over the top of the lower Burner tube all the
	way down to the Burner inlet fitting and screw it onto the fitting
	finger-tight.

Figure 32 Ferrule Placement on Lower Burner Tube

4Slide a 1/4" Swagelok nut over the Burner adapter and then slide a 1/4" ferrule over the Burner adapter and position it into the 1/4" nut.

5Center the lower Burner tube so that it will slide into the tapered union. Insert the lower end of the tapered union fitting into the 1/4" Swagelok nut

and screw it on finger-tight. If necessary, the brazed H2 line can be gently bent out of the way. Be careful not to stress the brazed (welded) connection.

6Find the quartz combustion tube, 1/4" ferrule and quartz heater assembly.

7Insert the quartz tube into the quartz heater assembly. Position a 1/4" ferrule (flat end butted up against the top of the swivel nut) onto the quartz combustion tube. With the ferrule positioned against the swivel nut, approximately 0.5 cm of the quartz tube should extend outside the nut.

Operation and Maintenance Manual 95