X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 29 Jun 2012 11:13:48 -0400 Message-ID: X-Original-Return-Path: Received: from mta2.srv.hcvlny.cv.net ([167.206.4.197] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTP id 5631301 for lml@lancaironline.net; Fri, 29 Jun 2012 08:57:22 -0400 Received-SPF: none receiver=logan.com; client-ip=167.206.4.197; envelope-from=Adam@ValidationPartners.com Received: from VpiWorkstation1 (ool-4351a46d.dyn.optonline.net [67.81.164.109]) by mta2.srv.hcvlny.cv.net (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTP id <0M6D00AEQQMMF8R0@mta2.srv.hcvlny.cv.net> for lml@lancaironline.net; Fri, 29 Jun 2012 08:56:47 -0400 (EDT) X-Original-Date: Fri, 29 Jun 2012 08:58:10 -0400 From: Adam Molny Subject: RE: [LML] VM1000 fuel probes and Dynon In-reply-to: X-Original-To: 'Paul Miller' , lml@lancaironline.net X-Original-Message-id: MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Mailer: Microsoft Office Outlook 11 Content-type: multipart/alternative; boundary="Boundary_(ID_491YGd09umM601H7l/RNPg)" Thread-index: Ac1V88+7+AOLOEuaSuC4X5flw/Z++wAAMeRA References: This is a multi-part message in MIME format. --Boundary_(ID_491YGd09umM601H7l/RNPg) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Paul - I recently upgraded to Dynon Skyview and had to add the frequency converters. They are also available through Grand Rapids, part number CP-10A I found the calibration to be a real headache. Both the Princeton converter and the SkyView have built-in calibration routines. I used a two-point (empty and full) linear calibration for the converters and then let the SkyView calibration routine to cope with the non-linearity due to fuel tank shape. The Dynon calibration routine wants you to add two gallons, mark the calibration point, then repeat. The problem is that the Princeton converter takes a full two minutes to average out a change in fuel level, so calibrating a single 33-gallon tank takes quite a while. To make matters worse, as the plane's weight increases due to fuel load the strut compresses and the wing drops a couple of inches, throwing the whole calibration off. The solution might be to jack up the plane to both level it and prevent it from moving, and redo the whole process. Has anyone had similar experience or come up with a better procedure? Thanks, Adam Molny Legacy N181AM, Phase I complete! _____ From: Paul Miller [mailto:pjdmiller@gmail.com] Sent: Thursday, June 28, 2012 11:46 AM To: lml@lancaironline.net Subject: Fwd: [LML] VM1000 fuel probes and Dynon Henry: speak with Todd Stenhouwer at Princeton Electronics 616 243-8800 PH 616 245-7707 FAX todds@princeton-electronics.com Your probes output 10kHz signal, that needs to be converted to 0-5v for your inputs. Todd sells the units to do that. I just upgraded my two units in the Legacy from 5-point devices to 11-point so if you want two of the 5-points I can make a deal on those with you. The 5-point means you have 5 calibration points in the fuel tank and then the unit interpolates between those five points (Empty, Full and 3 others). Paul Legacy, Calgary On 28 June 2012 08:27, Henry Arjad wrote: Does anyone have experience with hooking VM1000 fuel probes to Dynon Skyview system? After all tried and done, it appears that the probe's output is in frequencies and the Dynon accepts up to 5 volts as input. JPI tech told us they used to make an adapter, but they don't anymore. Does anyone know of such or similar adapter? Henry Arjad, KSNA LEG2 N22YY 40 hours Henry@cptgroup.com 949.500.6847 --Boundary_(ID_491YGd09umM601H7l/RNPg) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT

Paul –

 

I recently upgraded to Dynon Skyview and had to add the frequency converters. They are also available through Grand Rapids, part number CP-10A

 

I found the calibration to be a real headache. Both the Princeton converter and the SkyView have built-in calibration routines. I used a two-point (empty and full) linear calibration for the converters and then let the SkyView calibration routine to cope with the non-linearity due to fuel tank shape. The Dynon calibration routine wants you to add two gallons, mark the calibration point, then repeat. The problem is that the Princeton converter takes a full two minutes to average out a change in fuel level, so calibrating a single 33-gallon tank takes quite a while. To make matters worse, as the plane’s weight increases due to fuel load the strut compresses and the wing drops a couple of inches, throwing the whole calibration off. The solution might be to jack up the plane to both level it and prevent it from moving, and redo the whole process.

 

Has anyone had similar experience or come up with a better procedure?

 

Thanks,

Adam Molny

Legacy N181AM, Phase I complete!

From: Paul Miller [mailto:pjdmiller@gmail.com]
Sent: Thursday, June 28, 2012 11:46 AM
To: lml@lancaironline.net
Subject: Fwd: [LML] VM1000 fuel probes and Dynon

 

Henry:  speak with Todd Stenhouwer at Princeton Electronics
616 243-8800 PH
616 245-7707 FAX
todds@princeton-electronics.com

 

Your probes output 10kHz signal, that needs to be converted to 0-5v for your inputs.  Todd sells the units to do that.  I just upgraded my two units in the Legacy from 5-point devices to 11-point so if you want two of the 5-points I can make a deal on those with you.  The 5-point means you have 5 calibration points in the fuel tank and then the unit interpolates between those five points (Empty, Full and 3 others).

 

Paul

Legacy, Calgary


On 28 June 2012 08:27, Henry Arjad <henry@cptgroup.com> wrote:

Does anyone have experience with hooking VM1000 fuel probes to Dynon Skyview system?  After all tried and done, it appears that the probe’s output is in frequencies and the Dynon accepts up to 5 volts as input.  JPI tech told us they used to make an adapter, but they don’t anymore.  Does anyone know of such or similar adapter?

 

 

Henry Arjad, KSNA

LEG2 N22YY 40 hours

Henry@cptgroup.com

949.500.6847

 

 

 

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