I need to purge cases [assume 20-100 ft3] with Nitrogen to preserve them in storage at customer sites where they are exposed to all sorts of moisture sources. We essentially want to mount a N2 bottle on the casing or on a stand next to it and keep it purged.
The key is that I do not want to try and seal up the casing and all of its associated connecting piping and tubing to a high pressure. I just want to hold some extremely low minimum pressure so any leakage will be out of the casing...not back in.
Can anyone help with specifics of a bottle/regulator/monitor that I could do this with. A few other key points...
1.System will be used for up to a year or two and then frequently just get scrapped. I do not need anything fancy or beautiful...translation expensive...just workable.
2.I want the pressure in the inches of water area...or even lower if practical. Any positive pressure I can control to...the lower the better...will do what I need and minimize leakage.
3.I would look at sourcing components separately...or...buying a kit that is commercially available or can be built for us custom. We need 10-20 of these per year.
4.We have little to no experience controlling to the low flows and pressures.
Thanks in advance.