SV-EMS-220 Installation and Configuration
SkyView System Installation Guide - Revision K 7-27
Now, plug each thermocouple wire into its corresponding wire on the thermocouple harness.
Ensure that you match the wire color pairs on the harness to those on the thermocouple. All
thermocouple harnesses supplied by Dynon have each function (e.g., CHT1, EGT1) labeled on
each thermocouple pair.
A loose probe could allow exhaust to leak. This can lead to carbon monoxide
poisoning in the cabin and/or a potential fire. Have a knowledgeable mechanic
inspect the installation.
The probe can come loose during flight, and could potentially come in contact
with rotating engine parts or the propeller. We suggest a safety wire to keep the
probe in place.
Cylinder Head Temperature (CHT) Probes
Dynon Avionics sells and supports a variety of CHT probes. All thermocouple harnesses supplied
by Dynon have each function (e.g., CHT1, EGT1) labeled on each thermocouple pair.
Lycoming/Continental
Dynon Avionics sells bayonet style CHT probes (used in Lycoming and Continental engines).
With each probe we sell, a bayonet adapter is included. Your specific engine manual should
describe where to mount these bayonet adapters, but normally, there is a threaded hole (CHT
well) near the bottom of the cylinder close to the lower spark plug. Screw the bayonet adapter
into this hole. Screw the locking collar up or down the spring surrounding the probe such that
the tip of the probe is pressed against the bottom of the CHT well when the collar is attached to
the adapter. Insert the CHT probe into the well and lock the collar to the adapter. Now, plug
each thermocouple wire into its corresponding wire on the thermocouple harness. Ensure that
you match the wire color pairs on the harness to those on the thermocouples.
Rotax
Rotax 912 engines use 2 resistive CHT probes that are included with the engine. These probes
are preinstalled, but you need to route the connections from them to the SV-EMS-220. See the
Rotax CHT Sensors Section for information on making the physical connection to the sensor.
Jabiru
Jabiru engines require a 12 mm ring-terminal CHT probe for each cylinder. First, slide the
compression washer off the spark plug. Slide the 12 mm ring-terminal probe onto the plug.
Now, slide the spark plug compression washer back onto the spark plug. Reinstall the spark plug
into the spark plug hole. Please refer to the documentation that came with your engine for
more information. Now, plug each thermocouple wire into its corresponding wire on the
thermocouple harness. Ensure that you match the wire color pairs on the harness to those on
the thermocouples.
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