Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 10 Jun 2002 11:40:21 -0400 Message-ID: X-Original-Return-Path: Received: from [64.38.64.102] (HELO mx2.pe.net) by logan.com (CommuniGate Pro SMTP 4.0b2) with ESMTP id 1288266 for lml@lancaironline.net; Mon, 10 Jun 2002 11:38:18 -0400 Received: from ieee.org (IP-94-226.gst.pe.net [64.38.94.226]) by mx2.pe.net (8.11.6/8.11.3) with ESMTP id g5AFcGU14895 for ; Mon, 10 Jun 2002 08:38:16 -0700 (PDT) X-Original-Message-ID: <3D04C7E2.8FC4284F@ieee.org> X-Original-Date: Mon, 10 Jun 2002 08:38:10 -0700 From: "Charles R. Patton" Reply-To: charles.r.patton@ieee.org X-Mailer: Mozilla 4.7 [en] (WinNT; U) X-Accept-Language: en,pdf MIME-Version: 1.0 X-Original-To: " (Lancair Mailing List)" Subject: Re: [LML] Dielectric Constant of Avgas ? References: Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Allan Saul asked, "Does anyone know the Electrical Dielectric Constant of Avgas ?" A quick search with = "Dielectric Constant" and ( Avgas or gasoline) at Altavista returned a result with = http://www.asiinstr.com/dc1.html where there is a table with many dieletric constants. They give gasoline as: GASOLINE (70=B0 F ) 2.0 Also there was and article on home construction of a capacitance gas gauge a: http://www.rst-engr.com/ click on: Magazine Articles then click on: Gauging Fuel Quantity, Cheap RST gives the dielectric constant as 1.94. Be very aware that water has an extremely high dielectric constant and typically comes along with high conductivity due to ionic contaminants, so if your tanks end up with water in the mix, the reading will quickly be very erroneous. Regards, Charles R. Patton N360JM