Dynon Avionics FlightDEK-D180 Installation Guide - Manual (Page 35)

Transducer Installation
pressure fitting with a restrictor hole in it. This restrictor hole ensures that, in the event of a
sensor failure, coolant leakage rate is minimized, allowing time for an emergency landing.
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 both the wire that corresponds to the
desired GP input and a 1kΩ resistor (color bands:
brown, black, black, brown, brown; connect in either
direction), or splice the resistor into the GP input line
elsewhere on the run. Push the two Fastons onto the two
terminals on the fuel pressure sensor. Polarity is not
important. Connect the other side of the 1kΩ resistor
(color bands: brown, black, black, brown, brown;
connect in either direction) to the 5V Excitation Circuit, pin 18, as shown in the diagram.
1kΩ
GP in
+5V
excitation
Due to vibration issues, never connect the pressure sensor directly to engine.
If you use Teflon tape or other seal, ensure the sensor casing still maintains a good
connection to ground.
COOLANT TEMPERATURE SENSOR
You will find two 1kΩ resistors (color bands: brown,
black, black, brown, brown; connect in either direction)
in the accessories package (Dynon P/N 100446-000)
included with the FlightDEK-D180. You will be using
one of these resistors for proper installation of your
coolant temperature sensor.
EMS
DB37
Pin#
EMS
harness
Color
Functio
n
Desired
GP input
#
See chart on
page 3-13
GP
18 White/Red
5V
supply
to 1kΩ
resistor
The coolant temperature sensor needs to be installed
according to the directions of your engine’s
manufacturer. Dynon Avionics sells temperature sensors
with both 5/8-18 UNF (Dynon P/N 100409-001) and 1/8-
27 NPT (Dynon P/N 100409-000) threads; these are the
same as those used by the oil temperature inputs. If
neither of these threads matches those in your coolant
line, you will need to use adapters or drill/tap your own.
Using a crush washer between the sensor and the mating
line, screw the sensor into the fitting. Do not over
tighten.
Route the wire from the desired GP pin on the 37-pin
harness to where the coolant 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 wire.
Crimp a #10 ring terminal onto the end of the wire and a
1kΩ resistor (color bands: brown, black, black, brown, brown; connect in either direction), or
splice the resistor into the GP input line elsewhere on the run. Ensure that a good connection is
1kΩ
GP in
+5V
excitation
Case
grounded
FlightDEK-D180 Installation Guide 3-17