[Hallb-engineering] DC Mix 2 CO2 Flow

Brian Eng beng at jlab.org
Sat Jul 28 14:27:15 EDT 2018

The regulator for the CO2 used for Mix 2 needs to be adjusted.

The MFC valve was at 100% but not flowing anything, which is almost always due to the upstream pressure not being high enough. In the attached plot the scale for the MFC is -2 to 2 SLM.

I put the mixing system in manual mode and set the flows for mix 2 to 0 so the tank won't be filled with just Argon.

Once the regulator is adjusted or the pressure in the tank gets below ~95 it can be put back into automatic mode.
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