SV-EMS-220 Installation and Configuration
7-34 SkyView System Installation Guide - Revision K
If you use Teflon tape or other seal, ensure the sensor casing still maintains a good
connection to ground.
Rotax 914 Differential Fuel Pressure Sensor
The fuel pressure sensors that Dynon Avionics sells are not suitable for use with the
Rotax 914 engine, as Rotax specifies that fuel pressure on the 914 engine be
measured with respect to the air box pressure. All fuel pressure sensors sold by
Dynon Avionics are only capable of measuring fuel pressure against ambient air
pressure.
The UMA N1EU007D sensor is a third-party differential pressure sensor which measures fuel
pressure with respect to air box pressure as required by the 914 engine. This sensor is not
supplied by Dynon Avionics, but it is supported by SkyView.
Install the pressure sender in an area convenient to the connections on the engine. The
mounting threads are 5/8-18. Connect side of sender marked with a “W” to the fuel line close
to the carburetors. Use 1/8-27 pipe thread fitting. Connect the other side of sender to the air
box. This can be done by inserting a “T” in the carb vent lines that go to the air box. Use a 1/8-
27 pipe thread, barbed insert into the sender. Make sure all fittings on the air box lines are tight
using spring clamps or tie wraps.
Connect the red wire to EMS pin 15 (12V power). Connect the black wire to ground (an SV-EMS-
220 ground is appropriate). Connect the white wire to any of the “C” type inputs on the SV-
EMS-220 module - pins 8, 22, or 31 only.
Fuel Flow Sensor
The approximate pulses/gallon setting for the FloScan 201B (i.e., cast metal case
sensor) is 28,000 to 31,000. The approximate pulses/gallon for the Electronics
International FT-60 (i.e., the red cube) is 68,000. You must configure the fuel flow
sensor using this numerical value in the Sensor Setup Menu (SETUP MENU > EMS
SETUP > SENSOR SETUP). More information on this topic is discussed in the Fuel
Computer Configuration section of this chapter.
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