Cirrus SR22 Pilot Operating Handbook page 241

C D
IRRUS ESIGN
SR22
Tachometer
Engine speed (RPM) is shown in the upper mid-left corner of the ENGINE
page as both a simulated tachometer and as a digital value. The tachometer
pointer sweeps a scale range from 0 to 3000 RPM in 100 RPM increments.
The digital RPM value is displayed in increments of 10 RPM in white
numerals below the gauge.
The tachometer receives a speed signal from a magnetic pickup sensor on
the right hand magneto from the Engine Indicating System via the Engine
Airframe Unit.
Exhaust Gas Temperature (EGT)
Exhaust gas temperatures for all six cylinders are displayed in the Engine
Temperature block of the ENGINE page as vertical bars. The EGT graph is
marked from 1000 °F to 1600 °F in 100 °F increments. The digital EGT
value of the cylinder is displayed above the bar in white numerals. A sensor
in the exhaust pipe of each cylinder measures exhaust gas temperature and
provides a voltage signal to the Engine Airframe Unit which processes and
transmits the data to the Engine Indicating System.
Cylinder Head Temperature (CHT)
Cylinder head temperatures for all six cylinders are displayed in the Engine
Temperature block of the ENGINE page as vertical bars. The CHT graph is
marked from 100 °F to 500 °F in 100 °F increments. The digital CHT value
of the cylinder is displayed above the bar in white numerals.
A sensor in each cylinder head measures cylinder head temperature and
provides a voltage signal to the Engine Airframe Unit which processes and
transmits the data to the Engine Indicating System.
Oil Temperature
Oil temperature is shown in the upper right corner of the ENGINE page,
opposite the oil pressure scale, as both a simulated temperature gauge and
as a digital value. The gauge pointer sweeps a scale range from 75 °F to 250
°F in 50 °F increments. The digital temperature value is displayed in white
numerals below the gauge.
The oil temperature sensor is mounted on the rear engine case and provides
a signal to the Engine Airframe Unit that is processed and transmitted to
the Engine Indicating System for display.
Oil Pressure
Oil Pressure is shown in the upper right corner of the ENGINE page, oppo-
site the oil temperature scale, as both a simulated pressure gauge and as a
digital value. The gauge pointer sweeps a scale range from 0 to 90 PSI in 10
PSI increments. The digital pressure value is displayed in white numerals
below the gauge.
P/N 13772-006
Reissue A
S 7: A
ECTION IRPLANE AND
S
YSTEMS
E
NGINE
7-35