1-800-543-8390 www .balluff .com
Sensing Type Polarized Retroreflective Polarized Retroreflective
Adjustable range Adjustable range
visible laser emission visible r ed emission
Sensing Distance 0-12m 0-5.5m
PNP BOS-26K-PA-1LQK-S4-C BOS-26K-PA-1QE-S4-C
NPN BOS-26K-NA-1LQK-S4-C BOS-26K-NA-1QE-S4-C
Output Type Complementary Complementary
Operating V oltage 10-30 VDC 10-30 VDC
No Load Supply £40 mA £30mA
Switching Frequency 2500Hz 1000Hz
Voltage Drop <2.4VDC <2.4VDC
Output Current 200mA 200mA
Electrical Protection Short circuit and reverse polarity Short circuit and reverse polarity
Housing Material ABS impact resistant ABS impact resistant
Sensing Surface PMMA PMMA
Environmental Rating IP67 IP67
Operating Temperature -20 to +60°C -20 to +60°C
Connector 12mm micro style S4 12mm micro style S4
Retroreflective Technical Data
Accessories
BOS-26K
Light Level Drawings
BOS R-1 BOS R-9 BOS 26-HW-1
Sensing distance < 5mm Sensing distance > 5mm Mounting Bracket, adjustable mounting angles
Accessories
0345LIT2936
Revised 12/99MM5000
Balluff Inc.
8125 Holton Dr.
Florence, KY 41042
ph: 1-800-543-8390
fax: 859-727-4823
www.balluff.com
Retroreflective BOS-26K-1QE-...
Reflector
-80
-60
-40
-20
0
20
40
60
80
100 300 500 mm
Sensing distance measured with lateral approach using
Kodak gray card with 90% reflection.
Range measured with lateral approach using BOS R-1
reflector.
Retroreflective BOS-26K-1LQK-...
Reflector
-6
-4
-2
0
2
4
6mm
400 800 1200 mm
New Solutions
for Tough Applications
BOS-26K precision sensing
1-800-543-8390 www .balluff .com
Receiver
Target
Background
(Not detected)
Emitter
Emitter
Receiver Reflector
Mirror
Lens
The BOS-26K family...
Precision sensing for an often imprecise world
BOS-26K General Description
2
Figure 2
Retroreflective model with autocollimation lens. Emitter and receiver use the
same lens producing the tightest possible beam.
Figure 1
Diffuse models with background suppression. Converging beam produces
precise background suppression.
Features
•Many light source options; Laser
for accuracy, Visible red for
convenience, Infrared for
economical distance
•Diffuse sensors have adjustable
background suppression for
accurate sensing in tight locations
•Polarized retroreflective sensor
incorporates autocollimating lens
for tighter beam uniformity
•Laser sensors offer high switching
speeds, tolerance to object color
changes and small beam
diameter (0.1 mm at 80mm)
•Highly visible status LEDs for
output and contamination (weak
signal r eturn) function
•Sensitivity adjustment with precise
indication of set value
•Complementary (NO and NC) PNP
outputs with short circuit protection
on each model
•Compact, versatile IP 67
housing with rotatable micro
connector.
BOS 26K family of optical sensors
provides a wide range of sensing
solutions in an innovative block
housing. The family consists of five
models; three diffuse and two
retroreflective. Multiple light
sources are also available consist-
ing of laser, visible red and infrared
light. The 50x50x17 mm housing
with rotatable micro connector and
optional mounting bracket make
quick work of installation and
alignment.
Diffuse models incorporate
background suppression with
sensitivity controls (See figure 1).
Precise small part detection is
accomplished with the visible laser
emission model (1LHB). The laser’s
tight beam (0.1 mm at 80 mm) can
detect small parts regardless of
color. Short-range model (1HC) has
visible red emission to aid in
alignment. Extended range model
(1IE) uses infrared emission.
Retroreflective models utilize a
polarizing filter, autocollimating lens
and sensitivity adjustment. The
autocollimating feature provides a
single lens for the emission and
reception of the light (see figure 2).
The net result eliminates dead-
zones directly in front of the sensor
and provides consistent switch
points regardless of approach angle
or direction.
The polarizing filter prevents
ambient and target reflected light
from false triggering the sensor.
Sensitivity adjustment enables
multiple sensors to be used in close
proximity to each other without
cross activation. The laser model
(1LQK) has a range of 12m and the
red light model (1QE) has a range of
5.5 m. Both produce a visible light
to aid in alignment.
Range Adjustment
Range Adjustment Display
Output Function LED
Range/Stabilty LED
Sensing Surface
(Retro shown)
270° rotatable
Micro connector
Applications
Common applications for the
BOS26K optical sensor include
•Packaging
•Conveying
•Small parts detection
•Automotive manufacturing
•Metalforming
www.balluff.com 1-800-543-8390
BOS-26K
Sensing Type Diffuse Diffuse Diffuse
Adjustable bgd suppression Adjustable bgd suppression Adjustable bgd suppression
visible laser emission visible r ed emission Infrared emission
Sensing Distance 30-150mm 30-300mm 150-600mm
PNP Background Suppression BOS-26K-PA-1LHB-S4-C BOS-26K-PA-1HC-S4-C BOS-26K-PA-1IE-S4-C
NPN Background Suppression BOS-26K-NA-1LHB-S4-C BOS-26K-NA-1HC-S4-C BOS-26K-NA-1IE-S4-C
Output Type Complementary Complementary Complementary
Operating Voltage 10-30 VDC 10-30 VDC 10-30 VDC
No Load Supply £50 mA £35mA £70mA
Switching Frequency 2500Hz 1000Hz 800Hz
Voltage Drop <2.4VDC <2.4VDC <2.4VDC
Output Current 200mA 200mA 200mA
Electrical Protection Short cir cuit and r everse polarity Short cir cuit and r everse polarity Short cir cuit and r everse polarity
Housing Material ABS impact resistant ABS impact resistant ABS impact resistant
Sensing Surface PMMA PMMA PMMA
Environmental Rating IP67 IP67 IP67
Operating Temperature -20 to +60°C -20 to +60°C -20 to +60°C
Connector 12mm micro style S4 12mm micro style S4 12mm micro style S4
Light Level Drawings Wiring Connections
3
BOS-26K
Diffuse
Technical
Specifications
Diffuse BOS-26K-1HC-...
Diffuse BOS-26K-1LHB-...
Diffuse BOS-26K-1IE-...
6
4
2
0
2
4
-6
50 200 300 400 mm
mm
100 300 500 mm700
Kodak
gray card
15
10
5
0
-5
-10
-15
Kodak
gray card
mm
0.8
0.6
0.4
0
-0.4
-0.6
-0.8
mm
40 100 150 mm
80
Kodak
gray card
