
Miniature Photoelectric Sensors
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Performance based on BRT-50 retroreflector
Polarized Retrore ective
Excellent for sensing small items where opposed-mode sensing is not possible.
Recommended for relatively clean environments where substantial excess gain
is not required. Polarized models filter out unwanted reflections.
2.5 m
(8.3')
2.0 m
(6.6')
1.5 m
(5.0')
1.0 m
(3.3')
0.5 m
(1.7')
0
0
20 mm
40 mm
60 mm
20 mm
40 mm
60 mm
0
0.75"
1.50"
2.25"
0.75"
1.50"
2.25"
DISTANCE
QS12
Non-Polarized Retro
2.5 m
(8.3')
2.0 m
(6.6')
1.5 m
(5.0')
1.0 m
(3.3')
0.5 m
(1.7')
0
0
20 mm
40 mm
60 mm
20 mm
40 mm
60 mm
0
0.75"
1.50"
2.25"
0.75"
1.50"
2.25"
DISTANCE
QS12
Polarized Retro
1
10
100
0.1 m
0.33 ft
1 m
3.3 ft
10 m
33 ft
0.01 m
0.033 ft
1000
E
X
C
E
S
S
G
A
I
N
DISTANCE
1
10
100
0.1 m
(0.33')
1 m
(3.3')
10 m
(33')
0.01 m
(0.033')
1000
E
X
C
E
S
S
G
A
I
N
DISTANCE
Performance based on 90% reflectance white test card
Convergent-mode sensors feature high excess gain and can detect objects of low reflectivity.
They are a good choice for counting radiused objects with no space between them, for
accurate position sensing, and for sensing clear materials that travel near the beam’s focus.
25 mm
(1.0")
20 mm
(0.8")
15 mm
(0.6")
10 mm
(0.4")
5 mm
(0.2")
0
0
1 mm
2 mm
3 mm
1 mm
2 mm
3 mm
0
0.04"
0.08"
0.12"
0.04"
0.08"
0.12"
DISTANCE
QS12CV10
Convergent Mode
50 mm
(2.0")
40 mm
(1.6")
30 mm
(1.2")
20 mm
(0.8")
10 mm
(0.4")
0
0
10 mm
20 mm
30 mm
10 mm
20 mm
30 mm
0
0.4"
0.8"
1.2"
0.4"
0.8"
1.2"
DISTANCE
QS12CV20
Convergent Mode
* 9 m (30') cables are available by adding suffix “
” to the model number of any cabled sensor (e.g.,
a pigtail QD requires a mating cable (see page 7).
**Range specifications for retroreflective and polarized retroreflective sensors are largely dependent on target size and design.
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