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Thread: Rotax 912iS fuel pressure

  1. #1

    Rotax 912iS fuel pressure

    The Rotax owners forum has a discussion going on at the present which concerns the source of fuel pressure readings on a glass panel. The issue is that the 912iS uses the pressure in the air box as the reference as opposed to outside absolute pressure. The Garmin people have cautioned owners to use a differential
    pressure sensor. Meanwhile the Dynon owners are complaining that their pressure is below spec values due to not using a differential sensor. So on my 5600
    I see" in spec readings". Did AFS include a differential sensor in my package or is there a correction factor set in on the admin page?

  2. #2
    Advanced Flight Systems Shawn McGinnis's Avatar
    Join Date
    Sep 2012
    Location
    Canby, OR
    Posts
    861
    We use the same Kavlico sensors as Dynon and compensate with the formula:
    Fuel pressure = Analog Fuel Pressure + Ambient Pressure - MAP pressure
    Shawn McGinnis

    Advanced Flight Systems
    support@advanced-flight-systems.com

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