Shelby Tube Permeameter
Shelby Tube Permeameter
(OP)
Do any of you have experience using a Shelby Tube Permeameter? I am looking into purchasing one to compare test results with my current laboratory permeability testing methods.
The permeameter I am looking at can be seen in the link below:
http://www.globalgilson.com/productdisplay.asp?gro...
My question is in testing a 3"x6" shelby tube. Can you purchase a shelby tube with those dimensions? Or, do you cut the shelby tube? If you cut it, do you use a pipe cutter or band saw? I would rather not have to cut it, because you are then further disturbing your 'undisturbed' sample.
Thanks for any responses.
The permeameter I am looking at can be seen in the link below:
http://www.globalgilson.com/productdisplay.asp?gro...
My question is in testing a 3"x6" shelby tube. Can you purchase a shelby tube with those dimensions? Or, do you cut the shelby tube? If you cut it, do you use a pipe cutter or band saw? I would rather not have to cut it, because you are then further disturbing your 'undisturbed' sample.
Thanks for any responses.





RE: Shelby Tube Permeameter
For what you want, you probably can make up a set-up say with the base of a Proctor mold or similar lower support fitted with a suitable stone inside both tube ends, but use the two hold down threaded rods to clamp a cover on top. A gasket is needed at the top of the tube. Some form of drain is needed in the bottom and you might place a measuring container there also. Then run a clear plastic tube or similar up from a hole in that cover. You can get what ever head you want by a sufficient length of tubing and in a room or area where that head room is available. I've run these tests in stairways to get a big head. Knowing the tube inner diameter you an calculate flow and thus permeability.
This sort of testing can work, especially for unusual materials, such as peat, bark, foundry sand, etc. where conventional methods are not very suitble.
RE: Shelby Tube Permeameter
RE: Shelby Tube Permeameter
RE: Shelby Tube Permeameter
RE: Shelby Tube Permeameter
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RE: Shelby Tube Permeameter