Return-Path: Received: from rokland5.awh.us ([67.15.10.31] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP-TLS id 763857 for flyrotary@lancaironline.net; Mon, 28 Feb 2005 21:38:51 -0500 Received-SPF: none receiver=logan.com; client-ip=67.15.10.31; envelope-from=bob@bob-white.com Received: from bgp01386375bgs.brodwy01.nm.comcast.net ([68.35.160.229]:32945 helo=quail) by rokland5.awh.us with smtp (Exim 4.43) id 1D5xGp-0004Pa-Cq for flyrotary@lancaironline.net; Mon, 28 Feb 2005 20:37:59 -0600 Date: Mon, 28 Feb 2005 19:37:58 -0700 From: Bob White To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: flow measurements Message-Id: <20050228193758.0001c1be.bob@bob-white.com> In-Reply-To: References: X-Mailer: Sylpheed version 1.9.3 (GTK+ 2.4.9; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Antivirus-Scanner: Clean mail though you should still use an Antivirus X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - rokland5.awh.us X-AntiAbuse: Original Domain - lancaironline.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - bob-white.com X-Source: X-Source-Args: X-Source-Dir: Hi Rusty, The correction factor is the square root of the ratio of the specific gravity the guage is calibrated for to the specific gravity being measured. I have everything set up to measure my Meziere 136's except the AN plumbing which didn't quite fit. I will have another try at it this week. I bought an RCM-7000 guage on ebay for $50.00 with a measurement range of 4 to 30 GPM. The ad on ebay claimed the original price was $820. I don't expect to get 30 GPM with my EWP's. Bob White On Mon, 28 Feb 2005 17:30:22 -0600 "Russell Duffy" <13brv3@bellsouth.net> wrote: > Why use charts, and pressure, and voltages to calculate what I can directly > measure with a flow meter? > > The one caveat is that the flow meters are all calibrated to the specific > gravity of water, so they won't be completely accurate with Evan's NPG. I'm > sure there's a conversion if I look up the specific gravity of Evan's, or > just ask them to convert it, but getting a directly measured number will be > the place to start. > > Rusty (it's Todd's fault, really) > > -- http://www.bob-white.com N93BD - Rotary Powered BD-4 (real soon)