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Forum: Tools 02-09-12, 06:01 AM
Replies: 13
Views: 44,681
Posted By abogart
I thought that was neat too. Every commercial...

I thought that was neat too. Every commercial inclined manometer that I've seen works like this. Some of them do use oil and change the scale to compensate. But from what I can see, the liquid pretty...
Forum: Tools 02-08-12, 03:41 PM
Replies: 13
Views: 44,681
Posted By abogart
Here is version 1.1. It looks nice, but...

Here is version 1.1. It looks nice, but unfortunately I don't think it measures accurately.

http://i735.photobucket.com/albums/ww353/ab48726/IMAG0131.jpg

I was trying to make a well-type...
Forum: Tools 02-08-12, 09:51 AM
Replies: 13
Views: 44,681
Posted By abogart
My furnace manual says that external static...

My furnace manual says that external static pressure should not exceed 0.5" WC. External static pressure is the differential pressure between the supply and return sides. ESP can be determined by...
Forum: Tools 02-08-12, 09:17 AM
Replies: 13
Views: 44,681
Posted By abogart
Pretty much. I was thinking that the ducts were...

Pretty much. I was thinking that the ducts were more restricted due to many of the dampers being partially or fully closed, but it turns out I'm still within the .5" WC limit. I figure it will be a...
Forum: Tools 02-08-12, 08:05 AM
Replies: 13
Views: 44,681
Posted By abogart
It was actually the pictures of those radon...

It was actually the pictures of those radon stacks that gave me the idea. I noticed that they all have one of these manometers on them. I'm guessing they are just filled with colored water. Any other...
Forum: Tools 02-08-12, 07:18 AM
Replies: 13
Views: 44,681
Posted By abogart
Got it full of blue water, zeroed up, taped to...

Got it full of blue water, zeroed up, taped to the return duct, and tubes run to the return and supply.

http://i735.photobucket.com/albums/ww353/ab48726/IMAG0125.jpg

Here's the whole setup....
Forum: Tools 02-08-12, 06:25 AM
Replies: 13
Views: 44,681
Posted By abogart
I'll let you know in a few months. ;)

I'll let you know in a few months. ;)
Forum: Tools 02-07-12, 06:10 PM
Replies: 13
Views: 44,681
Posted By abogart
Homemade inclined manometer

I have recently found that a water tube manometer is actually a very simple instrument. Basically, a measured amount of water is suspended in a u-shaped tube. One of ends of the tube is used for...
Showing results 1 to 8 of 8

 
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