Datasheet
EX-20
Ultra-compact Photoelectric Sensor
Miniature-sized and
still mountable with
M3 screws
212
SERIES
UL Recognition
(Excluding 5 m cable length type)
Conforming to
EMC Directive
Amplifier Built-in
Miniaturization by using single chip optical IC
The beam-receiving photodiode and the
A/D conversion circuit have been
fabricated on a single chip optical IC (full
custom). Hence, in spite of its miniature
size, it has a performance and reliability
which is equal to or better than the
conventional product.
0.413 in
0.323 in
10.5 mm
8.2 mm
19 mm
0.748 in
Long sensing range
The EX-20 series achieves long distance
sensing [thru-beam type: 2 m 6.562 ft, retro-
reflective type: 200 mm 7.874 in (when using
the attached reflector), diffuse reflective
type: 160 mm 6.299 in], despite its miniature
size.
Hence, it is usable even on a wide conveyor.
2 m 6.562 ft
Thru-beam type
EX-28
EX-26
200 mm
7.874 in
Retroreflective type
160 mm
6.299 in
Diffuse reflective type
Clear beam spot using red LED dot light source
The emission area of a dot light source is
smaller than that of a conventional LED
flat light source, and it is possible to
design a high power, narrow beam. Since
a red LED dot light source is used, the red
beam spot is clear even at a far place, so
that alignment and confirmation of sensing
position is easy. Further, since the thru-
beam type, too, incorporates a visible
narrow beam, it can also reliably detect
small parts, such as, chip components,
lead frames, etc.
Setting
distance:
10 mm
0.394 in
Setting
distance:
80 mm
3.150 in
5 mm
0.197 in
spot
spot
"
"
1 mm
0.039 in
"
"
Incorporates a sensitivity adjuster even in this size
The sensor incorporates a sensitivity
adjuster in spite of its miniature size. It is
convenient when you need fine
adjustment. Further, the receiver of the
thru-beam, side sensing type sensor
incorporates an operation mode switch
which can change the output operation.
Bright 2-color indicator
A bright 2-color indicator (orange, green
LED) has been incorporated in all types.
Waterproof
The sensor can be hosed down because
of its IP67 construction. Further, the
sensor mounting bracket is also made of
stainless steel.
Note: However, take care that if it is exposed to
water splashes during operation, it may
detect a water drop itself.
Globally usable
PNP output type, which is much in
demand in Europe, is also available.
Of course, it conforms to the EMC
Directive and approved UL Recognition
(excluding 5 m 16.404 ft cable length
type).
08/2005