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Fuel Pressure SensorSV-EMS-220 Installation and ConfigurationThe fuel pressure sensor may be connected to any general purpose input pin on the SV-EMS-220’s DB37, however, we recommend it beconnected to pin 8 on this connector.First, mount the fuel pressure sensor to a fixedlocation using an Adel clamp or other securemethod. The fuel pressure sensor must not beinstalled directly to the engine due to potentialvibration problems. Next, connect the fuel1/8-27 NPT0-30 PSI1/8-27 NPT0-80 PSIsensor to the engine using appropriate hosesand fittings. Its pressure port has a 1/8-27 NPTpipe thread fitting; you may need adapters toconnect to the pressure port on your engine. Locate the correct fuel pressure port for yourFigure 32–Example Fuel Pressure Sensorsengine. This port must have a pressure fitting with a restrictor hole in it. This restrictor holeensures that, in the event of a sensor failure, fuel leakage rate is minimized, allowing time foran emergency landing.Carbureted engines–Use the 0-30 PSI sensor (<strong>Dynon</strong> P/N 100411-000). Crimp a standard ¼”female Faston onto one of the ground wires coming from the EMS 37-pin Main Sensor Harnessor another ground source such as a local engine ground. Crimp another ¼” female Faston ontoa general purpose input pin wire. Push the two Fastons onto the two terminals on the fuelpressure sensor. Polarity is not important. If you are converting from a GRT EIS system, youmust disconnect the external resistor pull-up from the fuel pressure output. This will make thesensor output equivalent to the sensor supplied by <strong>Dynon</strong> <strong>Avionics</strong>.Injected engines–Use the 0-80 PSI sensor (<strong>Dynon</strong> P/N 100411-001). Crimp a standard #8 ringterminal onto the SV-EMS-220 general purpose input wire of your choice. Unscrew the stud capfrom the threaded stud. Place the ring terminal on the stud and secure the cap downsandwiching the ring terminal. If the connection between the sensor and your engine is nonmetallic,you must connect the sensor case to ground through other means. The best way toaccomplish this is by sandwiching a ground-connected ring terminal between the sensor andthe mating fitting.Due to vibration issues, never connect the sensor directly to the engine.If you use Teflon tape or other seal, ensure the sensor casing still maintains a goodconnection to ground.<strong>SkyView</strong> System Installation Guide - Revision J 7-31
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