190-01115-01
G3X/G3X Touch Installation Manual - Engine/Airframe Sensor Installation
Rev. AC
Page 23-12
23.2.4 Turbine Engine Applications
Turbine Engines
- Many turbine engines can be monitored using the supported engine sensors shown in
, along with custom engine sensor configuration as described in
displays. Turbine engines are not supported by the GDU 37X display.
23.2.5 Twin-Engine Applications
A GDU 4XX 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 or GDU 47X 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
.
Control Surface
Position
Most potentiometer-type sensors can be used without modification. New
position calibration will be performed during G3X system installation.
Table 23-11 Sensors for Turbine Engines
Sensor Type
Details/Part Number
N1 / N2 RPM
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.
Torque
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
Oil pressure
Use Kavlico P4055-150G-E4A (494-30004-00), or select "Custom"
configuration and enter voltage-to-pressure calibration
Oil temperature
Use UMA 1B3XR RTD sensor
Turbine inlet or outlet
temperature
Use Type K thermocouple
Fuel pressure
Use supported Kavlico or UMA pressure sensor, or select "Custom"
configuration and enter voltage-to-pressure calibration
Fuel flow
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
Hydraulic pressure (or
other pressure)
Use supported Kavlico or UMA pressure sensor, or select "Custom"
configuration and enter voltage-to-pressure calibration
Other parameters
See
Table 23-10 Retrofit Engine Sensors
Sensor Type
Notes on Suitability for Reuse
