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FAA APPROVED
INSTALLATION MANUAL FOR THE EGT-701 Report 103
INSTALLING THE EGT-701 SCANNER®
1/20/09
Rev-E
Page 14 of 30
16) DESCRIPTION / OPERATING INSTRUCTIONS
The EGT-701 temperature indicator displays temperature digitally and in analog format. The EGT as displayed is
based on probes located near the exhaust outlet for each cylinder and the TIT probe, if installed, is adjacent to the
turbo charger. These probes are not necessarily collocated with the primary probes therefore; EGT-701 may not
indicate the same as the aircraft primary instruments. The analog display is an electronic bar graph (vertical columns,
o
one per cylinder) of EGT & TIT temperatures presented as a percentage of 1650
F. Below the vertical columns the
specific value for EGT and CHT are displayed digitally. The dot over the column indicates which cylinder's digital
information is presently displayed. The missing bars at the base of the columns indicate the hottest and coldest
Cylinder Head temperature trend. During Lean Find mode the leanest cylinder is displayed along with the fuel flow
(optional) at that time. Depressing the LF and STEP button simultaneously brings up the adjustable scan rate
o
o
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function, OAT in
C or
F. Depress the LF button will change the value of the rate or Oat in
C or
F. Exit by
Depressing STEP.
If the EGT-701 buttons are not depressed for 10 minutes the system will start scanning automatically. Depressing the
STEP button will stop the automatic scan and index through all the functions available. During constant power cruise,
if the LF button is depressed for five seconds the Bargraph will level at mid scale. The leveled bars represent the
o
peaks of each column. Each bar represents 10
F and now acts as an EGT & TIT trend monitor, quickly showing an
increase or decrease in temperature. Depress again to return to normal; nothing else is affected. With the fuel flow
option there is a three position toggle switch. The positions are: 1) EGT, digital and Bargraph display of temperatures,
2) FF, digital display of GPH, REM and USED Fuel. Temperature Bargraph remains. 3) Both, cycles through
everything installed. The data port output sends RS232 serial data every 6-sec.
Options of Fuel Flow, TIT, OAT, IAT (induction air temp.), OIL, BAT (voltage) and are displayed digitally with headlines
after the number, as "230 OIL" or "14 GPH". A large value (50 +) of "CLD" indicates shock cooling usually associated
with rapid descents at low power. Optional functions not installed will not display. The same acronyms are
incorporated in the TFT flat panel display.
RPM 2700
switc
CH 376 F
EGT 1340 F
EDM-800 Plasma display
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