[RomanKatz]

Hi all,
 
I have conducted a deltaP measurement on our pilot scrubber during operation. The results was 450 mm H2O.
 
I am not sure I understand the result, since 1 atm=10m of water. How should i analyse the result? Does it mean that the system is in "under-pressure" as in vacume?
In case a centrifugal is quoted, should I add this pressure to 1atm or request a qutation beased on this result only?(Assuming that this is the final deltaP result) 

[Stepan]

If I understand your setup correctly, you ΔP≈0.05 atm between the scrubber and ambient air, so the pressure inside the scrubber was either 0.95 or 1.05 atm, which depends on sign of ΔP