190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 30-191
30.4.32.9 CHT (Cylinder Head Temperature)
The following sensors can be configured for the CHT inputs on the GEA 24 or GSU 73:
• Type J thermocouple
• Type K thermocouple
• Rotax 965531
• Rotax 966385
• Thermistor (any VDO or similar 50-150°C thermistor)
NOTE
For the GEA 24, thermistor CHT sensors (including Rotax CHT sensors) are connected to
different input pins (see Section 28.2
)
NOTE
For the GSU 73, thermistor CHT sensors (including Rotax CHT sensors) are connected to
general purpose (GP) input pins (see Section 28.3
).
FADEC
: The GEA 24 can be configured to monitor cylinder head temperature data from the
following FADEC interfaces:
• Lycoming (iE2)
• ULPower
If two EIS LRUs are configured, up to 6 cylinders may be configured for a twin-engine application, or up
to 12 cylinders for a single engine. In a single-engine application, cylinders 1-6 are connected to CHT 1-6
on EIS LRU #1, and cylinders 7-12 are connected to CHT 1-6 on EIS LRU #2.
NOTE
The CHT 5/6 inputs on the GEA 24 have multiple functions. If CHT configuration is set to
5 or 6 cylinder engine, the TEMP3/4 inputs are unavailable, as those sensor presets use
the same pins and CHT inputs takes precedence.
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