Installation manual

IM2803MG.DOC., DIR. 912802 IM2803 Shadin Avionics

INSTALLATION MANUAL

IGIDATA

Rev: M

P/N 912802-A, 912802-03A, 912802-03A-G

Page: 5-2

5.4 Mounting the OAT Probe

1. Refer to Drawing 4028-005 and OAT Probe Assy Kit 681201-1. Use the supplied stiffener to

support the probe. Keep the probe away from transmitting antennas and static ports to avoid

interference.

2. Refer to Drawing 4028-207: +5V is supplied to the OAT probe from (red wire) P3:8. The

OAT signal is the white (or black) wire from P3:9.

3. The sun shield must be installed for proper indication of OAT.

4. For single engine installation, avoid mounting the OAT probe on the belly of the aircraft to

avoid erroneous reading due to the presence of hot exhaust gases.

5. Below is a OAT °C to mirco-ampere conversion chart. The amperage can be measured by

connecting an ammeter in series between the signal wire of the OAT probe and the DigiData.

This information is provided for trouble shooting purposes only.

OAT ºC Input µA OAT ºC Input µA OAT ºC Input µA

-60 213 -20 253 +20 293

-50 223 -10 263 +30 303

-40 233 0 273 +40 313

-30 243 +10 283 +50 323

1°C = 1 μA