Eads Eurocopter BO 105 CBS-5 - Page 208

EUROCOPTER
FLIGHT MANUAL BO 105 CB-5/CBS-5
7 - 13
MANUFACTURER’S DATA
Rev. 0
7.5.8 Indicators (see Fig. 7-3)
Torque indicator (% TORQUE)
simultaneously indicates the percent of torque output of
both engines. Each engine’s torquemeter, incorporated in the accessory gearbox, pro-
vides an oil pressure signal directly proportional to the output torque. This oil pressure is
piped directly to the respective indicator.
Triple tachometer indicator (ENG-ROTOR PERCENT RPM)
simultaneously indicates both
engine’s power turbine speed (N
2
) on an outer scale in percent rpm. The engine % N
2
rpm signals are produced by a tachgenerator mounted on the left front face of the acces-
sory gearbox.
Turbine outlet temperature indicators (
°C x 100 TOT) indicate individual engine exhaust
gas temperature measured by four thermocouple probes placed downstream of the power
turbine. The bimetallic thermocouples generate DC voltage directly proportional to the
sensed gas temperature.
Gas producer tachometers (% N
1
) indicate individual engine gas producer speed (N
1
) in
percent of rated rpm. The gas producer turbine speed is measured by a tachgenerator
mounted on the right front face of the accessory gearbox.
Triple oil temperature indicator (
°C TEMP OIL) simultaneously indicates engine 1 oil temp
(left scale) and engine 2 oil temp (right scale). Each engine’s oil temperature sensor is
installed in an oil supply line fitting mounted on the top right front face of the accessory
gearbox. The triple oil temperature indicator is powered from the Main Bus via a fuse.
Triple oil pressure indicator (kp/cm
2
PRESS OIL) simultaneously indicates engine 1 oil
pressure (left scale) and engine 2 oil pressure (right scale). Each engine oil pressure
transmitter is fitted to a clamp securing the oil lines to the engine compartment floor. The
triple oil pressure indicator is powered from the Main Bus via a fuse.
7.5.9 Annunciators
MAG PLUG 1, MAG PLUG 2 warning lights will activate when excessive metallic particles
are detected by either engine-mounted chip detector.
ANTI ICING 1, ANTI ICING 2 caution lights will activate when each engine anti-icing sys-
tem valve is open.