X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta12.emeryville.ca.mail.comcast.net ([76.96.27.227] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6062510 for flyrotary@lancaironline.net; Wed, 13 Feb 2013 17:00:37 -0500 Received-SPF: pass receiver=logan.com; client-ip=76.96.27.227; envelope-from=hoursaway1@comcast.net Received: from omta05.emeryville.ca.mail.comcast.net ([76.96.30.43]) by qmta12.emeryville.ca.mail.comcast.net with comcast id zpqH1k0060vp7WLACy01aB; Wed, 13 Feb 2013 22:00:01 +0000 Received: from sz0081.ev.mail.comcast.net ([76.96.40.138]) by omta05.emeryville.ca.mail.comcast.net with comcast id zy011k0052yr1eL8Ry01yP; Wed, 13 Feb 2013 22:00:01 +0000 Date: Wed, 13 Feb 2013 22:00:01 +0000 (UTC) From: hoursaway1@comcast.net To: Rotary motors in aircraft Message-ID: <915042765.1103088.1360792801063.JavaMail.root@sz0081a.emeryville.ca.mail.comcast.net> In-Reply-To: Subject: Re: [FlyRotary] Re: Crickets & progress MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1103087_1213771774.1360792801063" X-Originating-IP: [::ffff:68.40.10.159] X-Mailer: Zimbra 6.0.13_GA_2944 (ZimbraWebClient - IE8 (Win)/6.0.13_GA_2944) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20121106; t=1360792801; bh=Rnb4fvOAFAnee544CK+aR75rODsMJpKba3Ba5nC36e8=; h=Received:Received:Date:From:To:Message-ID:Subject:MIME-Version: Content-Type; b=Y3jtAYgMZfPg1BIfHWe30TAhc8Y8LJkn/0dM5jFXCZ5iJIYoDJGzwOuxoE384wSra AJPyg78Jyt34tXKiYAWggt892uWpnnq4PmaozCv7hh3dMTBEokn9BWrGfpQXwOPb5e ZqyTdK3Pfai2VMhVytHouOicjYKD0BFxbuD+cZvJTtRRh5te1CU0e0wefvTSWjCFgr UiiRew1Qxw7aLjIBBHLLzgJEAyd5qLjwvlEQ+T77S1GfHiKyl6SBF4BL9QtZp2UiLm ivstkmkMmUkNrVlrTyLYEqefVykBIJ8AZuCRO1xV7cpNn02tzg2GWCz9zSxk28N49A 13IS+O1uUsnHA== ------=_Part_1103087_1213771774.1360792801063 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable In auto use I think it matters what maufacturer you are reading about, GM c= alls all of them O2 senors, others vary with AF sensor others have to spell= every word out.=C2=A0 David.=20 ----- Original Message ----- From: "Ernest Christley" =20 To: "Rotary motors in aircraft" =20 Sent: Tuesday, February 12, 2013 9:38:22 AM=20 Subject: [FlyRotary] Re: Crickets & progress=20 That may well be the case. =C2=A0I am curious as to why that sensor is call= ed out specifically as an air/fuel sensor as opposed to an O2 sensor, why t= he output is 0-5 V as opposed to the 0-1 V of a normal O2 sensor, why it ha= s 4 wires instead of 5 or more for wide band sensors, and why it costs $200= or more depending on who is selling it. =C2=A0Of course, you doesn't alway= s get what you pay for.=20 Some heating elements use current flow through or voltage drop across the h= eating element to determine temperature, don't they? =C2=A0That would expla= in the 4 vs 5 wire.=20 http://www.aa1car.com/library/o2sensor.htm ------=_Part_1103087_1213771774.1360792801063 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit
In auto use I think it matters what maufacturer you are reading about, GM calls all of them O2 senors, others vary with AF sensor others have to spell every word out.  David.

From: "Ernest Christley" <echristley@att.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, February 12, 2013 9:38:22 AM
Subject: [FlyRotary] Re: Crickets & progress


That may well be the case.  I am curious as to why that sensor is called out specifically as an air/fuel sensor as opposed to an O2 sensor, why the output is 0-5 V as opposed to the 0-1 V of a normal O2 sensor, why it has 4 wires instead of 5 or more for wide band sensors, and why it costs $200 or more depending on who is selling it.  Of course, you doesn't always get what you pay for.


Some heating elements use current flow through or voltage drop across the heating element to determine temperature, don't they?  That would explain the 4 vs 5 wire.

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