Author Topic: Dust Collection Pipe System  (Read 15109 times)

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Offline ChuckM

  • Posts: 1193
Re: Dust Collection Pipe System
« Reply #60 on: June 24, 2019, 01:51 PM »

Offline Bob D.

  • Posts: 1272
Re: Dust Collection Pipe System
« Reply #61 on: June 24, 2019, 07:24 PM »
I spy a pitot tube, does that tubing run to a Magnehelic? What's your pressure look like?

Have you rigged up an alarm to know when the barrel is getting full?
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It's a table saw, do you know where your fingers are?

Offline MikeGE

  • Posts: 28
Re: Dust Collection Pipe System
« Reply #62 on: June 25, 2019, 10:49 AM »
I spy a pitot tube, does that tubing run to a Magnehelic? What's your pressure look like?

Have you rigged up an alarm to know when the barrel is getting full?
I assume you are referring to my setup.  If so, I use the Oneida Static Pressure Gauge Kit to monitor the filters.  It's been a while since I set it up, but with all of the blast gates open and the filters sealed with plastic bags and duct tape, the meter reading was about 2 inches of water.  With the gates open and the bags off the filters, the needle barely moves off of the zero. 

The one time I noticed the needle had moved significantly, the meter was indicating about 0.8 inches of water.  That's when I opened the DC closet and saw the plastic can had collapsed and broke the seal around the plywood lid.  I don't know when the can collapsed, but a lot of dust had been blown into the filters. I now monitor the meter frequently when I'm using the DC.
I don't have a bin level meter installed on this setup, but will install one when I change to the larger Dust Deputy XL cyclone.  I'll also change the ducting to 160mm pipes and change the routing a bit to minimize the runs and turns.  Fortunately, the company that sold me the 120mm components will buy them back at a reasonable (to me) reduction of the purchase price in exchange for the 160mm components. 

The current system works well, but I'm sure it can be better.  As we're fond of saying at my former job, the enemy of good is better.

Offline Bob D.

  • Posts: 1272
Re: Dust Collection Pipe System
« Reply #63 on: June 25, 2019, 01:03 PM »
Yes, looking at the instruction sheet for your system that's a Minihelic II made by Dwyer Instruments.

For anyone that wants to roll their own here it is.

https://www.amazon.com/Dwyer-Minihelic-2-5005-Differential-Pressure/dp/B009PC6LCA/ref=sr_1_7?keywords=magnehelic+0-5%22+wc&qid=1561482013&s=industrial&sr=1-7

I used a 0-3" Magnehelic at my old house across the furnace filter, and used it to monitor the filter condition by reading the D/P across the filter.
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It's a table saw, do you know where your fingers are?