Model 336
EGT/CHT/TIT/OIT Indicators
EGT/CHT/TIT/OIT Indicators
The following instructions describe the installation of the Horizon Instruments, Inc. Model 336 Electronic Aircraft Temperature (TIT, OIT, EGT, and CHT) Indicator.
The indicator includes circuitry necessary to read a J and K type thermocouple and will display temperature in degrees either Fahrenheit or Celsius.
The indicator is built to meet or exceed the requirements of TSO-C43C, Class II with respect to accuracy and performance.
The Temperature Indicator Display Layout:
The Temperature Indicator displays temperature as measured by a K type
thermocouple. The temperature measurement is always displayed on the digital
display in 1 degree resolution, and is scaled to fit the graphic display as
appropriate for the type of temperature measurement being made. the following
table lists the graphic range calibration for various temperature functions.
Measurement
TypeEGT
CHT
TIT
OIT
Scale:
Degrees C
Degrees F
Degrees C
Degrees F
Degrees C
Degrees F
Degrees C
Degrees F
Bottom segment of
graph turns on at:440
700
40
50
440
700
27.5
50
Top segment of
graph turns on at:990
1800
315
600
990
1800
165
325
Degrees Per
Segment10
20
5
10
10
20
2.5
5