Installation guide

SV-EMS-220/221 Installation and Configuration
7-44 SkyView System Installation Guide - Revision R
Connect the green wire to SV-EMS-220/221 D37 general purpose input of your choosing
(nominally pin 8)
Connect the black wire to Ground. Any the black ground wires on the SV-EMS-220/221 D37
harness are suitable for this purpose.
Legacy Dynon Fuel Pressure Sensors (100411-000 and 100411-001)
Dynon Avionics no longer supplies these sensors except for plug-compatible replacement. For
new installations, Dynon Avionics recommends
the Kavlico pressure sensors (above).
First, mount the fuel pressure sensor to a fixed
location using an Adel clamp or other secure
method such as using a transducer mounting
block on the firewall. The fuel pressure sensor
must not be installed directly to the engine due
to potential vibration problems. Next, connect
the fuel sensor to the engine using appropriate
hoses and fittings. Its pressure port has a 1/8-27
NPT pipe thread fitting; you may need adapters to connect to the pressure port on your engine.
Locate the correct fuel pressure port for your engine. This port must have a pressure fitting
with a restrictor hole in it. This restrictor hole ensures that, in the event of a sensor failure, fuel
leakage rate is minimized, allowing time for an emergency landing.
Carbureted engines – Use the 0-30 PSI sensor (Dynon P/N 100411-000). Crimp a standard ¼”
female Faston onto one of the ground wires coming from the EMS 37-pin Main Sensor Harness
or another ground source such as a local engine ground. Crimp another ¼” female Faston onto
a general purpose input pin wire. Push the two Fastons onto the two terminals on the fuel
pressure sensor. Polarity is not important. If you are converting from a GRT EIS system, you
must disconnect the external resistor pull-up from the fuel pressure output. This will make the
sensor output equivalent to the sensor supplied by Dynon Avionics.
Injected engines – Use the 0-80 PSI sensor (Dynon P/N 100411-001). Crimp a standard #8 ring
terminal onto the SV-EMS-220/221 general purpose input wire of your choice. Unscrew the
stud cap from the threaded stud. Place the ring terminal on the stud and secure the cap down
sandwiching the ring terminal. If the connection between the sensor and your engine is non-
metallic, you must connect the sensor case to ground through other means. The best way to
accomplish this is by sandwiching a ground-connected ring terminal between the sensor and
the mating fitting.
Due to vibration issues, never connect the sensor directly to the engine.
1/8-27 NPT
0-30 PSI
1/8-27 NPT
0-80 PSI
Figure 39–Example Fuel Pressure Sensors