Preparing for Analysis TriStar II 3020
3-22 302-42828-01 - Dec 2012
4. Insert the Po tube into the center hole of the Dewar cover and slide the cover up. Ensure the
tapered side of the cover is facing downward.
5. Insert the sample tube through one of the holes in the cover.
6. Place the connector nut, ferrule and O-ring onto the sample tube stem.
7. Attach sample tube to the analysis port and ensure it is completely in the port. Securely screw the
connector nut onto the analysis port. Hand-tighten the connector nut.
8. Slide the Dewar cover upward until it stops.
Installing the Analysis Dewar
Prepare the analysis Dewar after installing the sample tube.
When handling Dewars containing liquefied gases:
• Wear protection by using:
– goggles (or a face shield)
– an insulated or rubber apron
– insulated gloves
• When pouring liquefied gases from one container to another:
– cool the receiving container gradually to minimize thermal shock
– pour the liquefied gas slowly to prevent splashing
– vent the receiving container to the atmosphere
Always handle glass Dewars with care. Any product incorporating a vacuum is a
potential safety hazard and should be treated with caution. Always observe the
precautions listed below.
O-ring
Ferrule
Connector Nut
Dewar Cover
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