Honeywell PRIMUS 1000 - Primary Engine Displays

PRIMUSr 1000 Integrated Avionics System
A28--1146--112--00
5-7
Engine Instrument and Crew Alerting System (EICAS)
Primary Engine Displays
The engine displays showninfigure5--5, receivetheirinformationfrom
two DAUs. The two DAUs are each dual channel and receive various
aircraft engine and sensor data. One channel is primary, and both
channels process the data in parallel.
The symbol generator (SG) supplying the EICAS display (normallythe
NO.1 SG) also supplies display processing logic for some CAS
messages.
The primary engine displays are shown in the left half of the EICAS
display. The display is divided into seven areas:
D N
1
fan (FAN)
D Interstage turbine temperature (ITT)
D N
2
turbine
D Fuelflow(FF)inpoundsperhour(PPH)orkilogramsperhour(KPH)
D Fuel quantity (FUEL lbs, or kg L/R)
D Oil pressure/temperature (OIL PRESS/OIL TEMP)
D Engine vibration for low pressure (LP) and high pressure (HP).
Some engine warning and status messages are also displayed.
N
1
, ITT, OIL PRESS/TEMP, and VIB LP/HP are gauges. N
2
, OIL, fuel
flow, and fuel quantity are only digital readouts.
Theroundenginegaugesareafixedarcwithmovingpointeranddigital
current value window located above the pointer rotation point. Each
enginegaugetypeislabeled.Verticalgaugeshaveapointerthatmoves
on a fixed scale. Some vertical gauges also have a digital display.
The following is a list of the parameters shown on the engine display.
D Analog fan (N
1
) scales with digital readout.
D Analog ITT scales with digital readout.
D Digital turbine (N
2
) readout.
D Digital FF readout.
D Digital fuel quantity readout.
D Digital and analog readouts of oil pressure.
D Digital and analog readouts of oil temperature.
D LP and HP vibration analog displays