Dynon Avionics EMS-D120 Installation Guide - Manual (Page 21)

Transducer Installation
Oil Temperature Sensor
The oil temperature sensor needs to be installed
according to the directions of the engine
manufacturer. Dynon Avionics sells oil temperature
sensors with both 5/8-18 UNF (Dynon P/N 100409-
001) and 1/8-27 NPT (Dynon P/N 100409-000)
threads. Ensure that you have the right sensor for your engine.
Using a crush washer (not provided) between the sensor and
the engine case, tighten the sensor according to your engine
manufacturer’s recommendations.
Pin Color Function
7 White/brown
Oil
Temperature
1/8-27 NPT
EMS-D120 Installation Guide 3-7
5/8-18 UNF
Route the wire from pin 7 on the 37-pin harness to where the
oil temperature sensor is mounted. When routing the wires,
make sure that they are secured, so they will not shift position
due to vibration. Strip ¼” of insulation off the end of the w
Crimp a #10 ring terminal onto the end of the wire, ensuri
that a good connection is made between the wire and the
connector. Unscrew the nut from the stud on the oil temperature sensor. Slip the ring terminal
onto the stud and secure the nut over it.
ire.
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As mentioned in the Grounding section on page 2-2, the oil temperature sensor is very
susceptible to voltage differences between the engine case and the negative terminal of the
battery. Ensure that solid, thick, and short electrical connections exist between the engine and
battery ground.
Fuel Pressure Sensor
First, mount the fuel pressure sensor to a fixed location
using an Adel clamp or other secure method. 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.
Pin Color Function
8 Brown
Fuel
Pressure
1/8-27 NPT
0-30 PSI
1/8-27 NPT
0-80 PSI
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 (see
the Grounding section on page 2-2) coming from
the 37-pin harness. Crimp another ¼” female
Faston onto the brown wire from pin 8. Push the
two Fastons onto the two terminals on the fuel
pressure sensor. Polarity is not important. If you