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ZENAIR CH2000 SERVICE MANUAL
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SECTION IX
INSTRUMENTS
GENERAL
The instrumentation in the CH2000 is designed to give a quick and actual indication of the
attitude, performance and condition of the airplane. The instrument panel has been
arranged to accommodate all the advanced flight instruments in front of the pilot. (Fig. 21)
The two types of instruments installed in the CH2000 have been classified in this section
as standard and optional. The first part of this section will pertain to maintenance and
troubleshooting of all the standard instruments and their systems. The remaining portion
of this section is directed to maintenance and troubleshooting of optional instruments.
STANDARD INSTRUMENTS - Fig. 21
AIRSPEED INDICATOR
GENERAL
The airspeed indicator provides a means of indicating the speed of the airplane passing
through the air. The airspeed indication is the differential pressure reading between
dynamic air pressure and static air pressure. This instrument has the diaphragm vented to
the dynamic air source and the case is vented to the static air system. As the airplane
increases speed, the dynamic air pressure increases, causing the diaphragm to expand. A
mechanical linkage picks up this motion and moves the instrument pointer to the indicated
speed. The instrument dial is calibrated in knots, and also has the necessary operating
range markings for safe operation of the airplane.
TROUBLESHOOTING See following table:
AIRSPEED TUBES AND INDICATOR
Trouble
Cause
Remedy
Pointers of static
instruments do not indicate
properly.
Leak in instrument case or
in lines.
Check for leak and seal.
Pointer of instrument
oscillates.
Leak in instrument case.
Check for leak and seal.
3 Apr 95
9.1