Fuel level (resistive) sensors, Rotax cht sensors – Dynon Avionics EMS-D10 Installation Guide User Manual

Page 29

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Transducer

Installation

black/white wires (Dynon P/N 100468), there will be no resistor in the package and you do not
need to make any additional connections.
Be sure to configure the EMS-D10 to recognize the carburetor temperature sensor on the
general-purpose input you’ve chosen as described in the General Purpose Inputs section on page
5-16.

FUEL LEVEL (RESISTIVE) SENSORS

You may connect up to two resistive fuel level sensors to the GP inputs. Generally, this should
only be done if the plane has more than two tanks and the dedicated fuel level inputs are already
used. Connect the output of the fuel level sensor to the desired GP input. Also, connect this same
node to a 200Ω resistor (color bands: Red, black, black, black, brown; connect in either
direction); the other end of which should be attached to the +5V Excitation Circuit. (Resistor
values between 150Ω and 300Ω can be used if 200Ω is not readily available.)
Be sure to configure the firmware to recognize the fuel level sensor on the general-purpose
input(s) you’ve chosen as described in the General Purpose Inputs section on page 5-16.

ROTAX CHT SENSORS

Crimp bare ¼” female Faston terminals
(6.3x0.8 according to DIN 46247) onto the
ends of the wires connected to GP 1 (pin 4)
and GP 2 (pin 22) on the EMS-D10. Locate
the left-side CHT sensor screwed into the
bottom side cylinder head 2; slide the Faston connected
to GP1 input onto it. Locate the left-side CHT sensor
screwed into the bottom side cylinder head 3; slide the
Faston connected to GP2 input onto it.
You will find two 1.21kΩ resistors (color bands: brown,
red, brown, brown, brown; connect in either direction)
in the accessories package (Dynon P/N 100446-000)
included with the EMS-D10. Connect either end of one
of the resistors to the +5V Excitation Circuit (pin 18)
and the other end to the wire connecting the left CHT
sensor to pin 4. Repeat this with the right CHT sensor.

Pin

Color

Sensor Function

4

Purple/blue

CHT L

GP 1

22

Purple/yellow

CHT R

GP 2

Case
grounded

+5V
excitation

GP in

1.21kΩ

Be sure to configure the EMS-D10 to recognize the Rotax CHT sensors on the 2 general-purpose
inputs as described in the General Purpose Inputs section on page 5-16.

EMS-D10 Installation Guide

3-15

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