Date: Tue, 31 Jul 2007 13:54:03 -0700
Reply-To: neil N <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: neil N <musomuso@GMAIL.COM>
Subject: Re: LP regulator tester. PIC + Question
In-Reply-To: <46AF92CB.3060306@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
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.
http://web.mac.com/tubaneil
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
> >
>