Electronics International CA-1 - Manual (Page 12)

9
The second valuable feature is the instrument's ability to detect small temperature changes (1’F). This gives
the pilot rate and trend information (in what direction and how fast the temperatures are changing) at a
glance. This is valuable for detecting changing atmospheric conditions and avoiding thunderstorms and icing
conditions. It can also help to find cooler flying conditions in warm weather.
The third feature is the instrument's Ice Zone Warning Light. This light will come on when the OAT drops to
39’F and stays above 10’F. This feature can be very useful to a pilot by warning him of the possibility of
structural ice if weather conditions are right.
The Electronics International OAT instrument resolves outside air temperatures to 1’F and is very sensitive
to air temperatures changes. For this reason, when the OAT probe is in still air and near a heat source, such
as hot asphalt, a hangar heater, etc., the unit will read the actual temperature to which the probe is subjected.
When the engine starts and there is a flow to air over the probe, the unit will read the air temperature accu-
rately and display changes quickly.
INSTALLATION INSTRUCTIONS
1. Important Information and Initial Check Out:
A. The installer and aircraft owner must read the Warranty before starting the installation. There is
information in the Warranty that may alter your decision to install this instrument. If you do not accept the
terms of the Warranty, do not install this instrument.
B. If you are not an FAA Certified Aircraft Mechanic familiar with the issues of installing aircraft EGT,
CHT, Carb Temp and/or OAT instruments, Do Not attempt to install this instrument. The installer should
use current aircraft standards and practices to install this instrument (refer to AC 43.13).
C. Check that any necessary FAA Approvals (STC's, etc.) are available for your aircraft before starting
the installation. STC's are located at the back of this manual.
D. Read the entire Installation Instructions and resolve any issues you may have before starting the installa-
tion. This may eliminate any delays once the installation is started.
E. THIS INSTALLATION MAY REQUIRE SOME PARTS UNIQUE TO YOUR AIRCRAFT THAT
ARE NOT SUPPLIED IN THE KIT. Acquire all the parts necessary to install this instrument before
starting the installation.
F. Check that the instrument make and model are correct before starting the installation.
G. Before starting the installation make sure the unit will fit in the location you intend to install it without
obstructing the operation of any controls.