Det-Tronics U7099 Dual Frequency IR Detector/Controller - Manual (Page 5)

down, the distance from the detector to the designated
level would be 10 feet (3 meters). Because of the nomi-
nal 90 degree cone of vision, the detector covers a cir-
cular area having a diameter of approximately 20 feet (6
meters). A simple layout of the area to be covered will
show the number of detectors required to completely
supervise the designated area. DETECTOR MOUNTING AND WIRING
All wiring must comply with local codes, regulations,
and ordinances.
1. Refer to Figure 8. While holding the detector barrel,
remove the four hex screws from the top of the junc-
tion box. Carefully lift the detector barrel and
unplug P1 from the terminal block board recepta-
cle. Set the detector barrel aside.
4
SYNCHRONOUS
DETECTOR
SENSOR
1
CHANNEL
AUTOMATIC
GAIN
CONTROL
B0578
SENSOR
2
CHANNEL
AMPLIFIER
AMPLIFIER
FAULT
DETECTOR
POWER
SUPPLY
RATIO "AND"
STARTUP
DELAY
THRESHOLD
DETECTOR
FAULT
OUTPUT
ALARM
OUTPUT
Figure 7—Block Diagram of U7099 Signal Processing Sequence
B0913
JUNCTION BOX
HEX SCREWS (4)
SWIVEL
DETECTOR BARREL
SENSOR CAP
O-RINGS
SENSOR/CONTROLLER MODULE
SWIVEL ADJUSTMENT SCREW
P1
Figure 8—U7099 Assembly