![Garmin G1000 NXi Скачать руководство пользователя страница 139](http://html1.mh-extra.com/html/garmin/g1000-nxi/g1000-nxi_system-maintenance-manual_3652529139.webp)
G1000 NXi System Maintenance Manual
Page 126
King Air 300 Series
Revision 1
190-00716-N1
Engine Data Check
Accomplish this section to verify the engine data availability and validity for ITT and torque.
Remove the left and right engine cowling (Ref. King Air 300 Series Maintenance Manual,
Chapter 71-10-00) to gain access to the engine harness connectors and reinstall cowling when
testing is complete. Required test equipment is provided in Table 4-11. Any product
conforming to the specification listed may be used.
Test Equipment
Requirement
Calibrated DC Power Supply
0-100 mVDC, 0-10 VDC
ITT Tester
200C-1200C
Table 4-11, Engine Data Check Test Equipment
ITT
1. Disconnect all thermocouple wires except for the Alumel-Green #10 and Chromel-White
#8 leads from the left hand engine thermocouple junction block mounted to the gas
generator case.
2. Connect the DC Power Supply or ITT Tester (or equivalent) across the Alumel-Green
#10 (-) and Chromel-White #8 (+) leads of the thermocouple junction block. Make sure
the polarity of the Alumel and Chromel leads are strictly observed when making
connections.
3. Apply external power to aircraft and start the G1000 in normal mode.
4. Verify the gauge indications at the test points in Table 4-12 are within specified
tolerances.
NOTE
If the ITT Tester is not temperature compensated or if using the DC Signal
method, use the chart shown in Figure 4-4 to convert the ambient temperature
to millivolts and subtract from the DC Signal value in Table 4-12.
Test Point
(degC)
DC signal
(mV, subtract
temp offset)
Indication
(degC)
200
8.137
200 +/- 17
400
16.395
400 +/- 17
600
24.902
600 +/- 12
800
33.277
800 +/- 7
1000
41.269
1000 +/- 12
1200
48.828
1200 +/- 17
Table 4-12, ITT Indication Test Points