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| I've put section and rate control on all three of those styles of system. NH3 coolers is one of the few things I support that I don't have a strong opinion on which way to go. Microtrak I like because they are small and compact, but raven is definitely more common and thus easier to source parts if required. That could change from region to region though.
I'm the GPS tech, so take this opinion with a grain of salt, but which of the controllers do you prefer? And what system would be easier to convert to section & rate control down the road? Raven may have a leg up in that field. | |
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NH3 flow control
