Return-Path: Received: from smtp01.wlv.untd.com ([209.247.163.57] verified) by logan.com (CommuniGate Pro SMTP 4.1b8) with SMTP id 2436600 for flyrotary@lancaironline.net; Thu, 19 Jun 2003 22:39:23 -0400 Received: (qmail 21794 invoked from network); 20 Jun 2003 02:39:20 -0000 Received: from dialup-67.31.207.147.dial1.tampa1.level3.net (HELO netzero.net) (67.31.207.147) by smtp01.wlv.untd.com with SMTP; 20 Jun 2003 02:39:20 -0000 Message-ID: <3EF273C4.1050601@netzero.net> Date: Thu, 19 Jun 2003 22:39:00 -0400 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 (nscd2) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Engine instruments References: Content-Type: multipart/alternative; boundary="------------000707020503000900040701" --------------000707020503000900040701 Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit I'm using the MPX5--- series to monitor oill, water and fuel pressures. Not sure that they're really rated for oill, gas and water but been working OK since 1999 (and 367+ hours on the plane). I did fill the hoses going to the sensors with oil, but imagine that that's well diluted by now. The price is right and they're so easy to interface: just feed then +5 volts and you get a linear output and a known offset. I never calibrated mine, just used the nominal data sheet values. Don't have the equipment to calibrate them. Note that I'm running carbs, so fuel pressures are never more than 5 psi. If you have a mill, you might consider making enclosures for them. Would be a nice safety feature which I don't have. Finn Rino wrote: >I am planning on using Motorola sensors (MPX5700) to read the intake >manifold and turbo output. I am a bit confused about the type of sensor >to use. > >I believe that I should use an Absolute sensor for the intake plenum and >a Gauge sensor for the turbo pressure ---But I am not sure! >The meters will be calibrated to read in inches. > >Can someone comment on this --- Ed and Tracy probably know about this. > >Also, has anyone ever used these sensors to read fuel pressure, are they >resistant to fuels? > >Thanks > >Rino >Turbo 13b Glass Goose > > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >>> >>> > > > > --------------000707020503000900040701 Content-Type: text/html; charset=ISO-8859-2 Content-Transfer-Encoding: 8bit I'm using the MPX5--- series to monitor oill, water and fuel pressures. Not sure that they're really rated for oill, gas and water but been working OK since 1999 (and 367+ hours on the plane). I did fill the hoses going to the sensors with oil, but imagine that that's well diluted by now. The price is right and they're so easy to interface: just feed then +5 volts and you get a linear output and a known offset. I never calibrated mine, just used the nominal data sheet values. Don't have the equipment to calibrate them.

Note that I'm running carbs, so fuel pressures are never more than 5 psi. If you have a mill, you might consider making enclosures for them. Would be a nice safety feature which I don't have.

Finn

Rino wrote:

I am planning on using Motorola sensors (MPX5700) to read the intake
manifold and turbo output.  I am a bit confused about the type of sensor
to use.

I believe that I should use an Absolute sensor for the intake plenum and
a Gauge sensor for the turbo pressure ---But I am not sure!  
The meters will be calibrated to read in inches.

Can someone comment on this --- Ed and Tracy probably know about this.

Also, has anyone ever used these sensors to read fuel pressure, are they
resistant to fuels?

Thanks

Rino
Turbo 13b Glass Goose

 Homepage:  http://www.flyrotary.com/
 Archive:   http://lancaironline.net/lists/flyrotary/List.html

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