-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Tracy Crook
Sent: Wednesday, November 24, 2004 7:14 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Fuel Pressure Sendor

The 0 - 180 ohm is correct one.  The EM2 can read rpm in two different ways.  The injector cycle time is the most accurate and that is what it comes set up for.

 

Tracy

----- Original Message -----

From: Joe Hull

To: Rotary motors in aircraft

Sent: Tuesday, November 23, 2004 4:14 PM

Subject: [FlyRotary] Re: Fuel Pressure Sendor

OK – they have two: 10-180ohms and 240-33ohms. Which?  I’m assuming that the 240-33 ohm is 0 psi at 240 ohms and 100 psi at 33. Can I calibrate the EM-2 to understand backwards increments (i.e zero offset 240 and increments of whatever 1024-207 is times -1)?

 

Oh BTW – how does the EM-2 get RPM?  The Tach Sense input is for “Lycoming Only – from Mag Lead”.  Is it getting RPM from the EFI primary injector duty cycle? Tracy?

 

Joe Hull

Bellevue (Seattle), Washington

Cozy MkIV #991 (working on Engine & Electrical & Finishing)

http://www.maddyhome.com/canardpages/pages/JoeHull/index.html

 

Tracy recommends VDO 0-100 psi for fuel and oil.  I had a 0-80 VDO on hand, and was able to calibrate that to the EM-2; no problem.

 

Al