4. Place the dewar on the elevator and close the sample compartment door.
5. Go to Unit 1 > Service Test > PCP Analysis.
6. Select Nitrogen Blank for Analysis Type, then click Start.
Tube Size Tolerance
3/8 inch tubes
Volume adsorbed to be ±0.073 std cm
3
at any point. The isotherm
must show a fairly smooth trace. No sudden peaks, except at sat-
uration.
1/2 inch tubes
Volume adsorbed to be ±0.2000 std cm
3
at any point. The isotherm
must show a fairly smooth trace. No sudden peaks, except at
saturation.
Reference Material Analysis
TriStar II 3020 Confirm Installation Instructions and Checklist
302-42870-04 (Rev A) — Sep 2017
5 - 15
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