X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.122] verified) by logan.com (CommuniGate Pro SMTP 5.4.2) with ESMTP id 5262603 for flyrotary@lancaironline.net; Mon, 28 Nov 2011 17:33:51 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.122; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=2.0 cv=a9WyBDuF c=1 sm=0 a=SC71y0a/4S6V9vjVxUojGA==:17 a=UgLSjVVu0g8A:10 a=8nJEP1OIZ-IA:10 a=arxwEM4EAAAA:8 a=r1ClD_H3AAAA:8 a=HZJGGiqLAAAA:8 a=Ia-xEzejAAAA:8 a=zL3L39W7AAAA:8 a=s1I-Y6CqAAAA:8 a=7g1VtSJxAAAA:8 a=6zvm3mRcgcWx-vtvRiQA:9 a=wPNLvfGTeEIA:10 a=Qa1je4BO31QA:10 a=HeoGohOdMD0A:10 a=EzXvWhQp4_cA:10 a=_WB_iEVUxpumJDm-:21 a=7tSRutbOxmxSM3mB:21 a=SC71y0a/4S6V9vjVxUojGA==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.175.135 Received: from [174.110.175.135] ([174.110.175.135:53293] helo=EdPC) by cdptpa-oedge03.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 16/EC-04465-D2C04DE4; Mon, 28 Nov 2011 22:33:17 +0000 Message-ID: <49758EB5E7B74A91A96C905077FB472A@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: wide-band o2 sensor DIY project Date: Mon, 28 Nov 2011 17:32:54 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 Yep! Ernest, Some equation OK- too bad one of the valances on the hydrocarbon molecule is incorrect - can you spot which one? {:>) Ed Edward L. Anderson Anderson Electronic Enterprises LLC 305 Reefton Road Weddington, NC 28104 http://www.andersonee.com http://www.eicommander.com -------------------------------------------------- From: "Ernest Christley" Sent: Monday, November 28, 2011 4:25 PM To: "Rotary motors in aircraft" Subject: [FlyRotary] Re: wide-band o2 sensor DIY project > Ed Anderson wrote: >> Charlie, I looked into adapting my EFISM to use a wide band O2 sensor, I >> though it would be simple - just a different (more linear) O2 sensor >> voltage output range - however, the problem is the control circuit >> required to maintain the precise sensor temperature (needed for any >> accuracy) is more complex than that required to simply read the sensor >> signal. In fact, from what I have read if you do not control the heater >> temperature precisely - not only does accuracy suffer but the life of >> the sensor is also shortened. Bosch does have a control chip - but its >> almost as large as my circuit board and not cheap. >> >> There are a number of DIY wide band units that are available. My >> favorite is located here: >> >> http://techedge.com.au/ >> >> > > BTW, Ed, the "How the Wideband Sensor Works" link at the bottom of > http://www.megamanual.com/PWC/index.htm has enough > math to keep you busy for at least 20 minutes 8*). > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html