I believe the advantage to testing at higher pressures is that the bench will be more sensitive to changes in flow, provided the instruments can see it. On another site (www.theoldone.com) Larry Widmer claims that there are Nascar teams testing at 140"w.c.!! We can thank Smokey Yunick for the 28" standard used by most today. As a note: remember that the red fluid gives a higher reading than water for the same pressure. The red oil I just bought from Dwyer is .826 specific gravity. So 1.174 x w.c. pressure = inches of red oil on the manometer. The Superflow manometers I believe have special scales to read directly in inches of water (stretched out).
Superflow's instruments are Dwyer. Their stuff is relatively affordable new, compared to Meriam. All of my Meriam items were used......alot more affordable.
Before I found my incline, I had thought of building one. I already had the vertical Meriam and it was built simple enough. The problem I found was trying to locate glass tubing of the same dimensions as the Meriam manometers.......biggest problem being the length.
Manometers
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by 98-1074649673 » Sun Apr 11, 2004 8:08 pm
Here are some pretty bad pics (I don't profess to be a photographer) of the inclined manometer I built for my bench before going digital with Mouse's setup.
The manometer was 36"+ in length I'm just showing the end peices. I used ridgid poly tubing 3/8" dia threaded the ends to screw into the end blocks. On one end I took a solid peice of alum round stock and threaded it inside for fittings on one end and the tue to thread into on the other. This peice was threaded on the outside so it was adjustable with the nut u see in the pic. I could use it to tension the tubing. The back peice was a peice of alum "U" channel with sharp corners. I only used a peice of paper to make my scale and was only playing around with this setup and never really actually used it for flow testing. I never got the well part finished and was doing the design on that before going digital.
Hope this gives someone some ideas?
The manometer was 36"+ in length I'm just showing the end peices. I used ridgid poly tubing 3/8" dia threaded the ends to screw into the end blocks. On one end I took a solid peice of alum round stock and threaded it inside for fittings on one end and the tue to thread into on the other. This peice was threaded on the outside so it was adjustable with the nut u see in the pic. I could use it to tension the tubing. The back peice was a peice of alum "U" channel with sharp corners. I only used a peice of paper to make my scale and was only playing around with this setup and never really actually used it for flow testing. I never got the well part finished and was doing the design on that before going digital.
Hope this gives someone some ideas?
- 98-1074649673
24 posts
• Page 2 of 2 • 1, 2
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