How to maintain the same concentration when space velocity changes?

When I set CO at 500 ppm with 300,000 GHSV, I can get a very close concentration (495-510ppm). However, after space velocity decreases to 200,000 GHSV, CO concentration goes down to 450 ppm. Theoretically, it should maintain the same concentration. Do somebody know what cause this problem and how to fix it? Thanks! Jim

Use a smaller reactor? I have no clue
Jim:
This is a LabVIEW programming language forum, you may find someone familiar with what you are talking about, there are people from all disciplines that visit here.
But you would have a better chance on a forum more related to your query.
Good look!
-AK2DM
~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
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evolution wrote in message news:<[email protected]>...
> How can I save my data and the date,the time into the same file when
> I run this VI at different times?
>
> I use a translation stage for the experiment.For each user in the lab
> the stage position (to start an experiment) is different.I defined one
> end of the stage as zero. I want to save the position , date and time
> of the stage with respect to zero.I want all these in one file, nd
> everytime I run it it should save to the same file, like this:
> 2/12/03 16:04 13567
> 2/13/03 10:15 35678
>
> So I will track the position from day to day.If naybody helps, I
> appreciate it.Thanks.
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