Building Your Own And Improving Upon The Oneida Dust Sentry Bin Level Sensor

[Mike Chalmers]

I just did a simple mod to deal with the issue. I took a small shop vac and stuck the hose into the barrel through a hole in the bottom side of the barrel (55 gal). No caulking or sealing, just a reasonably tight fit. Shop vac is activated by the same remote that turns on my DC. In my opinion, much better solution than making holes in my DC.

[Ben Rivel]

I just did a simple mod to deal with the issue. I took a small shop vac and stuck the hose into the barrel through a hole in the bottom side of the barrel (55 gal). No caulking or sealing, just a reasonably tight fit. Shop vac is activated by the same remote that turns on my DC. In my opinion, much better solution than making holes in my DC.

I dont think youd have to make a hole in the dust collector, just the incoming ductwork going into the main inlet. And if that were the case, I think Id rather do that then dedicate a whole vacuum just to keep the bag in my dust collectors dust bin pressed against the bin. There just has to be a simpler way.

[Michael Stockdale]

That actually sounds like a plausible solution... I may well give it a try! Thanks guys, I love this place!

[Ben Rivel]

That actually sounds like a plausible solution... I may well give it a try! Thanks guys, I love this place!

If you try it let us know!

[David L Morse]

I dont think youd have to make a hole in the dust collector, just the incoming ductwork going into the main inlet.

I think the pressure at that point under most operating conditions won't be low enough to keep the bag pressed against the barrel. The pressure you're tapping into has to be lower than the pressure inside the bag. That pressure is essentially the same as the pressure at the bottom of the vortex.

As the air enters the cyclone it expands thus increasing static pressure. As it flows around and down there's pressure drop due to frictional losses. Unless your duct is really small compared to the inlet that loss will likely be more than the expansion gain.

On the way up the inside of the vortex and outlet tube you get both contraction and frictional losses. The top of the outlet tube should have a lower static pressure than the bottom of the vortex. I think a tap here will do a much better job of keeping the bag inflated.