BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 250

Figure 8-1. Engine and APU Fire Detection Components
INNER CONDUCTOR
(FORMS LOOP TO
FIRE DETECTION UNIT)
CL-600-2B16 PILOT TRAINING MANUAL
ENGINE
COMBUSTION-ZONE
SENSING ELEMENT
APU
FIRE
PUSH
BOTTLE
ARMED
PUSH TO
DISCH
OUTER CONDUCTOR
(GROUNDED)
Figure 8-2. Fire-Sensing Loop
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
APU
SENSING
ELEMENT
INSULATOR
(RESISTANCE VALUE DECREASES
PROPORTIONALLY TO RISE IN
TEMPERATURE)
CL 601-3A/R 8-3
L t é e
L t d .
ENGINE
COMBUSTION-ZONE
SENSING ELEMENT