
SV-EMS-220/221 Installation and Configuration
7-48 SkyView System Installation Guide - Revision R
Figure 40–Rotax Fuel Flow Sensors (Single-ended Measurement on Top and Differential Measurement on
Bottom)
In the differential fuel flow configuration in the lower portion of Figure 40, the first fuel flow
transducer measures the fuel flow from the fuel tank. The second fuel flow transducer
measures the unused fuel flow that returns to the fuel tank. The SV-EMS-220/221 takes data
from both transducers and calculates net instantaneous burn rate.
Fuel Level Sensor
Dynon Avionics does not sell fuel level sensors.
The SV-EMS-220/221 supports both resistive type sensors as well as capacitive sensors which
output a voltage (e.g., Princeton). If you have a capacitive sensor which does not output a
voltage on its own, you may be able to use Dynon’s Capacitance-to-Voltage Converter. Read the
relevant section below for the type that you are installing.
After installation, fuel level sensors must be calibrated. Your SkyView display
utilizes onscreen wizards that help you do this. Go to the EMS Calibration Menu to
access these wizards (SETUP MENU > HARDWARE CALIBRATION > EMS
CALIBRATION).
SV-EMS-220
Fuel Flow
Transducer
Restrictor for 912 (ULS)
From
Fuel
Tank
To
Fuel
Tank
Fuel Flow
Transducer
Output Signal
To Carburetors
Fuel Flow
Transducer
SV-EMS-220
Fuel Flow
Transducer
From
Fuel
Tank
To
Fuel
Tank
Fuel Flow
Transducer
Output Signal #1
Fuel Flow
Transducer
Output Signal #2
Restrictor for 912 (ULS)
or Regulator for 914
To Carburetors
912 (ULS) Installation
912 (ULS) or 914 Installation
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