Engine/Airframe Input Configuration Items; Exhaust Gas Temperature (Egt); Turbine Inlet Temperature (Tit); Eis Display - Garmin G3X Installation Manual

EIS Display – The Hide setting removes the item from the EIS display, although the item will be displayed
on the MFD ENG page. The Auto setting displays items based upon hierarchy and the availability of EIS
display space.
The following list of gauges, (if configured) are specifically required by FAR 91.205 and will always be
displayed on the EIS display. These required gauges do not have an EIS Display setting. Other gauges
will be displayed as space permits based upon hierarchy.
RPM

18.3.2 Engine/Airframe Input Configuration Items

This section briefly describes how to configure the engine/airframe inputs for each supported sensor type,
using the Engine Configuration page. Where applicable, differences between the GEA 24 and GSU 73 are
noted. Refer to appendices C through H for wiring guidance.
18.3.2.1 CHT (Cylinder Head Temperature)
Thermocouples: Up to six thermocouples can be connected to the CHT thermocouple inputs on the GEA
24 or GSU 73. Both J-type and K-type thermocouples are supported. Select 1, 2, 4, or 6 cylinders of CHT
thermocouple monitoring.
Rotax CHT sensors: Rotax CHT sensor part numbers 965531 and 966385 are supported. For the GEA 24,
Rotax CHT sensors are configured using the same CHT input page but are connected to different GEA 24
input pins (Appendix G.1). For the GSU 73, Rotax CHT sensors are connected and configured using the
GSU 73 general purpose (GP) inputs
18.3.2.2

Exhaust Gas Temperature (EGT)

Thermocouples: Up to six Type-K thermocouples can be connected to the EGT thermocouple inputs on the
GEA 24 or GSU 73. Select 1, 2, 4, or 6 cylinders of EGT thermocouple monitoring. If Lean Assist using
EGT is desired, change the Lean Assist setting to "Enabled". (see
Rotax 912iS: For the GEA 24, select "Rotax FADEC" as the EGT configuration to use EGT data from the
Rotax 912iS FADEC interface.
NOTE
The EGT 6/MISC PRESS input on the GSU 73 has multiple functions. If the GSU 73
EGT 6/MISC PRESS input has been configured for a sensor that is not an EGT
thermocouple, only four EGT thermocouples can be configured.
18.3.2.3

Turbine Inlet Temperature (TIT)

One or two Type K thermocouples can be connected for turbine inlet temperature monitoring, using the
TIT 1 and TIT 2 inputs on the GEA 24 or GSU 73. If Lean Assist using TIT is desired, change the Lean
Assist setting to "Enabled". (see
190-01115-01
Rev. L
Oil Temperature
(Appendix
Section 18.3.2.20
G3X Installation Manual - Engine/Airframe Sensor Configuration
Oil Pressure
G.2).
Section 18.3.2.20
for more information).
Fuel Quantity
for more information).
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