Engine Torque - Meggitt Efis; Edu Pilot’s Engine Instrument Display - Piper Malibu Meridian PA-46-500TP Airplane Maintenance Manual

1.

Engine Torque - Meggitt EFIS

NOTE: When Meggitt Engine Instrument Display System (EIDS) is installed, Refer to 77-40-00 for more
information.
A. Description
The engine torque indicating system consists of a torque pressure transducer at the propeller
reduction gearbox and the Meggitt Engine Instrument Display System (EIDS).
The engine torque indicator is incorporated into the Meggitt Engine Instrument Display System
(EIDS). The EIDS consists of two main components, the Data Acquisition Unit (DAU) and the
Engine Display Unit (EDU). The DAU collects and processes the raw sensor input and provides a
refined data stream to the EDU which actually displays the data. (See Figure 1.)
B. Engine Torque Indication Calibration
During calibration, switches on the bottom of the DAU are manipulated to select which phase of the
calibration process is being performed. All data relating to calibration is displayed on the EDU.
NOTE: The DAU is located on the right aft side of the forward pressurization bulkhead and is
accessed by reaching under the instrument panel on the right side.
(1) Requirements
(a) Calibrate whenever a DAU is replaced.
(b) Calibrate whenever a torque pressure transducer is replaced.
EC T M : C R U ISE 1
7I13
PIPER AIRCRAFT, INC.
PA-46-500TP, MALIBU MERIDIAN
MAINTENANCE MANUAL
POWER
TQ
LB - FT
11 0 0
N
P RPM
57 0
EDU Pilot's Engine Instrument Display
Figure 1
(PIR-PPS60185, Rev. E.)
ITT
° C
1 5 5
N
G
%
3 7 . 3
M AINT
77-10-00
Apr 15/07
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