The Pitfalls of Testing a Small Volume

[@mikefreedom5612]

Great video! Did you tested his leak is behaving?

[@Es0ter1ca]

Hey Jim, do you guys have any plans to make an ultra accurate gauge just for nitrogen hold testing? Would be nice to have something dedicated for that also.

[@coldfinger459sub0]

Yes small volumes are difficult when testing refrigerant manifold for vacuum leaks when they are not intended for pulling and holding deep vacuum. Took about 48 hours on the vacuum pump to get the vacuum to hold below 60 µm. After a month and a half sitting on the shelf valves close off the vacuum decayed up to 820 µm I would call that a pass for refrigerant manifold that should not even be used for vacuum decay test.. but it took many tries and a lot of effort to get it to do that.