thanks guys. Strange it seems it may not matter how much water is in tube. True? I imagine a LONG column of water would change the readings. Dunno..... Anyway..... FWIW, (for newbies like me) I made the manometer with 1/2" clear hose. This fit over 1/2" copper pipe, but I heated the clear tube a *little* with a flame first. Tight fit, but it works. 5/8 ID hose would fit better. Use hose clamps. Make sure you use flared fittings. These are standard and I found the brass fitting in the Canadian Tire plumbing section. " 3/8" x 1/2" union" : plumbing Copper fitting in pic accepts standard 1/2" copper. (i.e. for fitting 1/2" copper pipe to male threads of water tank) I used a little nylon tape over threads of brass piece. One could solder the copper and brass pieces together if desired. Cheers, Neil.
-- Neil Nicholson. 1981 Air Cooled Westfalia.
On 7/31/07, Mike Rocket J Squirrel Elliott <camping.elliott@gmail.com> wrote: > Well, I'm no expert but that appears to be your basic highly-accurate > home-made manometer. When pressure is applied to one side, it goes down > while the other side goes up. As I understand it, you take the distance > the one went down and add it to the distance the other went up to get > the fluid height. So 5 inches + 5 inches = 10 inches . . . > > Mike "Rocket J Squirrel" Elliott > 71 Type 2: the Wonderbus > 84 Westfalia: Mellow Yellow ("The Electrical Banana") > 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano > KG6RCR > > On 7/31/2007 12:25 PM neil N wrote: > > > Hi all. > > > > Here's the pic: > > > > http://web.mac.com/tubaneil/iWeb/Site%205/WaterColumn.html > > > > question: > > > > if water goes up LH side of hose app 5" , then double that = the total > > output of a given pressure regulator? > > > > I thought the LH side would go up 11" or so, but it only moved 5-6". > > > > FWIW, I bled the line near the connection (via vent hole on hose) til > > I smelled LP. > > > > Any answers and/or critiques regarding my test method/tester are welcome! > > > > Neil. > > > > -- > > Neil Nicholson. 1981 Air Cooled Westfalia. > > > > http://web.mac.com/tubaneil > > > |
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