12-12-2023, 01:51
Glad to see you are having some notable success!
However I have some bad news, I modified my program and was testing to see if I got everything right (almost) and tried to go to a higher pressure. Previously I had not gone beyond -30kPa, but the original intent was to aim for -60kPa capability. I found the system struggling to get much above -30 (I think due to leakage which will be hard to track down) but managed to get it up to just over -34 when disaster struck. The dome collapsed with a bang. Now I think -30kPa will be about where you would use it, but without experience I don't really know what limit is desirable. I am pretty sure that -60kPa would be more than anybody would ever want. Anyhow, looks like I am going to return to the glass dome which is harder to mount a foam seal on due to its shape. I have two glass domes, one smaller and one larger. I think the smaller one will be the one to send. But I now have some more work to do.
However I have some bad news, I modified my program and was testing to see if I got everything right (almost) and tried to go to a higher pressure. Previously I had not gone beyond -30kPa, but the original intent was to aim for -60kPa capability. I found the system struggling to get much above -30 (I think due to leakage which will be hard to track down) but managed to get it up to just over -34 when disaster struck. The dome collapsed with a bang. Now I think -30kPa will be about where you would use it, but without experience I don't really know what limit is desirable. I am pretty sure that -60kPa would be more than anybody would ever want. Anyhow, looks like I am going to return to the glass dome which is harder to mount a foam seal on due to its shape. I have two glass domes, one smaller and one larger. I think the smaller one will be the one to send. But I now have some more work to do.