Tuesday, July 21, 2009

co-locating CO and SO2

1343 EDT
- disconnected CO line from filterpack and plugged
- attached ~2m of new 1/4" PFA tubing to filter pack
- cut SO2 'trunk' tubing upstream of SO2 tee
- connected new 1/4" PFA to tee

main trunk flow was not able to maintain at 8 SLPM when switched to below canopy inlet

1500 EDT
changed trunk flow to 7 SLPM and adjusted CO sample/Zero switching to coincide with SO2 timing

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