18 Making Fluidic Connections to the 600E Pump
Helium Specifications
The minimum specifications for helium sparge gas are listed below. The tank or house
supply source must be independently regulated between 50 and 90 psi for connection to
the sparge inlet.
The required specifications for ultra-pure carrier grade helium gas are:
• Nitrogen less than 5.0 Mppm (molar parts per million)
• Oxygen less than 5.0 Mppm
• Total water less than 1.0 Mppm
• Total hydrocarbon less than 0.5 Mppm
Attaching Compression Fittings to the Helium Line
Stainless steel tubing (1/16-inch, with at least 0.020-inch ID, 0.040-inch ID preferred)
connects the helium supply to the 600E pump. This tubing requires compression-fitting
connections on each end.
1. Slide the compression screw onto an end of the stainless steel tubing. Slide the
ferrule onto the tubing with the large end of the taper toward the screw.
Figure 2-8 illustrates a compression screw assembly.
Figure 2-8 Compression Screw Assembly
2. Push the tubing all the way into the fitting body until the tube bottoms out.
STOP
Attention: The 600E system warranty may be voided if you use an inferior
grade of helium gas.
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