Dynon Avionics SkyView System Installation Guide - Manual (Page 160)

SV-EMS-220/221 Installation and Configuration
7-48 SkyView System Installation Guide - Revision S
Do not use Teflon tape when screwing in any of the fittings.
EI “Red Cube” Installation
The Electronics International “Red Cube” FT-60 flow transducer has ¼” female NPT ports. Do
not exceed a torque of 300 inch-lbs. (.112 Nm) when installing fittings into the transducer. The
Red Cube FT-60 should NOT be installed with its wires pointing DOWN (the best situation is
with the wires pointing UP). The fuel line on the outlet port should not drop down after exiting
the transducer. This configuration can trap bubbles in the transducer, causing jumpy readings.
The inlet port, outlet port, and flow direction are marked on the top of the FT-60.
Rotax Placement Recommendations
If installing on a Rotax 912, review Figure 41 for recommendations specific to these engines.
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
Figure 41 – 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 41, 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.