Dynon SkyView HDX - Voltmeter Inputs; Exhaust Gas Temperature (EGT) Sensors

SV-EMS-220 Engine Monitoring System Installation and Configuration
10-6 SkyView HDX System Installation Manual - Revision E
o Available from http://www.whiteproducts.com/tools.shtml.
• #2 Phillips screwdriver.
• Flathead screwdriver.
• ¼” ID tubes, any necessary adapters, and clamps for routing manifold pressure
to the sensor.
• Drill and 1/8” bit.
10.2.6 Voltmeter Inputs
Pins 1 and/or Pin 2 of the EMS D37 connector can be used to monitor voltage in your
electrical system (or any other DC voltage source) from 10-30V DC. Connect either of the
pins to a point in your electrical system that you wish to monitor.
10.2.7 Exhaust Gas Temperature (EGT) Sensors
Wire length of CHT/EGT harnesses supplied by Dynon Avionics is not critical.
It is acceptable to cut the thermocouple (brown) wire of the CHT/EGT harness
to shorten the appropriate length for your installation. It is recommended to
not cut the “armored” portion of the cable near the sensor end of the CHT or
EGT sensors.
The EGT wire may be extended provided that:
1. Type K thermocouple is used for the extension wire. (This is different than
CHT wire.)
2. There is no temperature change across the connection between the
junction that is created. For example, do not create a junction across the
firewall.
If either of the above guidelines are not followed, your EGT readings will be
incorrect.
Correct placement of EGT sensors on the exhaust manifold - per the engine
manufacturer’s guidance - is critical to obtaining accurate readings. Placement differs
between engine types and even specific models. All thermocouple harnesses supplied by
Dynon Avionics have each function (e.g., CHT1, EGT1) labeled on each thermocouple
pair.
Consult the specific engine’s manual for proper EGT locations.
10.2.7.1 Mechancical Installation
Once you have determined the appropriate EGT locations for your engine, drill 1/8”
diameter holes at the specified positions in the exhaust manifold. Usually, this spot is 2
to 8 inches (50mm to 200 mm) from the cylinder. This spot should be on a straight portion
of the exhaust manifold, as this provides a better fit for the hose clamps. For best results,
mount all sensors the same distance from each cylinder.