Garmin G3X Installation Manual page 256

21.2.4 Turbine Engine Applications
Turbine Engines - Many turbine engines can be monitored using the supported engine sensors shown in
Table 21-1, along with custom engine sensor configuration as described in
46X displays. Turbine engines are not supported by the GDU 37X display.
Sensor Type
N1 / N2 RPM
Torque
Oil pressure
Oil temperature
Turbine inlet or outlet
temperature
Fuel pressure
Fuel flow
Hydraulic pressure (or
other pressure)
Other parameters
21.2.5 Twin-Engine Applications
A GDU 45X/46X system using two GEA 24 units can monitor data from two engines with up to 6
cylinders each. Engine #1 is connected to GEA 24 #1, and engine #2 is connected to GEA 24 #2. Data
from both engines is presented on the same GDU display. Due to its larger display size, the GDU 46X is
preferred over the GDU 45X for twin-engine applications.
The two GEA 24s in a twin-engine installation use the same input configuration for analog and digital
inputs, with a configuration choice to allow data for a particular input to be monitored from both GEA 24s,
or from #1 only. The second GEA 24 may also be used to support additional discrete inputs. For
information on configuring twin-engine sensor inputs, see
190-01115-01
Rev. AA
Table 21-11 Sensors for Turbine Engines
Two separate turbine engine RPM gauges can be displayed. Select
"Custom" configuration for GEA 24 RPM1 / RPM2 inputs and enter
frequency-to-RPM calibration. A Sandia ST26 tachometer signal
converter is typically required to provide proper digital signal conditioning.
Use Kavlico P4055-150G-E4A (494-30004-00) for pressures under
150 PSI and enter pressure-to-torque calibration, or select "Custom" and
enter voltage-to-torque calibration
Use Kavlico P4055-150G-E4A (494-30004-00), or select "Custom"
configuration and enter voltage-to-pressure calibration
Use UMA 1B3XR RTD sensor
Use Type K thermocouple
Use supported Kavlico or UMA pressure sensor, or select "Custom"
configuration and enter voltage-to-pressure calibration
Use EI FT-60 (494-10001-00), EI FT-90, EI FT-120, or Floscan 201B-6,
or select "Custom" configuration and enter pulses-per-gallon calibration
Use supported Kavlico or UMA pressure sensor, or select "Custom"
configuration and enter voltage-to-pressure calibration
See Table 21-1
G3X/G3X Touch Installation Manual - Engine/Airframe Sensor Installation
Section 32.4.25
Details/Part Number
Section 32.4.4 and Section
for GDU 45X/
32.4.25.2.1.
Page 21-12