Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Tue, 27 May 2003 18:45:36 -0400 Message-ID: X-Original-Return-Path: Received: from [65.54.169.149] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1b6) with ESMTP id 2364703 for flyrotary@lancaironline.net; Tue, 27 May 2003 11:25:16 -0400 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 27 May 2003 08:25:15 -0700 Received: from 67.243.12.203 by bay3-dav119.bay3.hotmail.com with DAV; Tue, 27 May 2003 15:25:15 +0000 X-Originating-IP: [67.243.12.203] X-Originating-Email: [lors01@msn.com] Reply-To: "Tracy Crook" From: "Tracy Crook" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] EM2 sensors X-Original-Date: Tue, 27 May 2003 11:26:08 -0400 Organization: Real World Solutions Inc. MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Original-Message-ID: X-OriginalArrivalTime: 27 May 2003 15:25:15.0715 (UTC) FILETIME=[2C6C9930:01C32464] Rusty asked about what sensors would work with the EM2 Here is the story on sensors as it applies to the EM2. The EM2 will include a basic set of sensors with the instrument. I'll update the website soon on which ones are included and which are optional. The RTD Temperature and pressure sensors used with the EM2 are VDO sensors which are as close to a standard as one can get and are widely available at reasonable prices. They are available in NPT and metric threads so they can be installed directly into most applications without adapters. There are also 8 other temperature sensor inputs. 4 J type thermocouple, usually used for cylinder head temps (CHT) and 4 K type thermocouple used for EGTs. Obviously rotary flyers will not need all of these but the EM2 will be available in a Lycoming version as well. Air data sensors (TAS, Altitude, VSI, & OAT) are included with the EM2. Fuel gauge sensors are Stewart Warner as used in Van's Aircraft (not included) If you already have other type sensors, all is not lost. An additional feature on the EM2 is a calibration screen. This is primarily to calibrate the EM2 for greater accuracy than can be done with fixed calibration (sensor do vary a bit) but it can also be used to calibrate for other sensors if they are of the same type (RTD, linear voltage, etc). I would still recommend using the VDO sensors that the EM2 was designed with. If you are using an EC2 engine controller you do not need a fuel flow sensor since the EM2 gets fuel flow infomation from the engine controller. Lycoming drivers and carbureted rotaries will have to buy an optional Flo Scan sensor. The picture of the EM2 on the website is already obsolete due to improvements in display layout. Some data is now provided in bargraph form in addition to digital. In some cases, analog more pilot friendly. There is lots more I could go into but if I don't get back to working on programming, the EM2 won't be ready for its June introduction. Several builders ask "June what?" Don't know yet but I'll be happy if it is June 30th. Dancing as fast as I can, Tracy tcrook@rotaryaviation.com www.rotaryaviation.com