- 8 -
Note:
1.) Tangential
- motion perpendicular to
the sensor
2.) Radial
- motion either directly
toward or away from
the sensor
3.) Presence
- minor motion as described
by NEMA WD7 with the
additional requirement of
both radial and tangential
detection
Ultrasonic signal can be increased
by hard surfaces and decreased
by soft surfaces.
US Oneway / US Hallway Ultrasonic Detection
m
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ft
45.5
42.5
39
36
32.5
29.5
26
23
19.5
16.5
13
10
6.5
3.3
0
3.3
6.5
10
13
16.5
19.5
23
26
29.5
32.5
36
39
42.5
45.5
Coverage diagram
at 9 ft mounting
height.
One grid line = 1 m / 3.3 ft
US ONEWAY
US HALLWAY
Detection Zone
m
6
5
4
3
2
1
0
1
2
3
4
5
6
ft
19.7
16
13
9.5
6.5
3.3
0
3.3
6.5
9.5
13
16
19.7
6 5
4 3 2 1 0 1 2 3 4 5 6
US Quattro / DT Quattro Ultrasonic Detection / DT Quattro Infrared Detection
Coverage diagram
at 9 ft mounting
height.
One grid line = 1 m / 3.3 ft
PIR RADIAL & PRESENCE DETECTION
PIR TANGENTIAL DETECTION
US TANGENTIAL & PRESENCE DETECTION
US RADIAL MAJOR MOTION DETECTION
