Datasheet

The W4S-3 INOX series –
best optical performance in a robust stainless steel housing
The small and easily visible light spot provided by the PinPoint LED, enables the reliable detection of
small, transparent and very refl ective objects almost irrespective of their surface colour or texture.
These sensors really impress with their precise and active suppression of unwanted background effects.
A particular feature of the refl ex version is the continuous monitoring and adaptation of the internal
switching threshold to compensate for changing environmental conditions, which ensures that transpar-
ent materials, glass bottles etc, are reliably detected, even at very close range. The W4S-3 INOX series
are demonstrably best in class.
INOX, high-grade stainless steel from SICK –
the best for your application.
STAINLESS STEEL V4A/
316L – RUSTPROOF AND
CHEMICAL RESISTANT
Extremely resistant stainless
steel housing ideally suited for
contact with foods.
For the toughest cleaning routines.
SMOOTH SURFACE
Completely smooth surface from
which the cleaning agents run off
slowly, giving bacteria no chance.
For the most thorough
cleaning routine.
HOLES CAN BE
SEALED.
Flush-fitting dummy plugs
seal the fixing holes.
For fastest cleaning.
Description Version Light beam geometry Page
Photoelectric
proximity
sensor BGS
3 ... 500 mm
• For large scanning distances
• Secure detection of objects in
front of critical backgrounds
• Best background suppression
in its class
Teach-in via
cable
6.5 mm in 150 mm
6–7
Metal membrane
Teach-in button
8–9
IO-Link
10– 11
Photoelectric
proximity
sensor BGS
3 ... 120 mm
• Precise detection at
30 ... 90 mm distance
• Exact scanning distance adjust-
ment with Teach-in
• Secure detection of objects in
front of critical backgrounds
• Laser-like, focussed light spot
at 40 ... 80 mm
Teach-in via
cable
< 3 mm of
40 mm to 80 mm
12–13
Metal membrane
Teach-in button
14–15
IO-Link
16–17
Photoelectric
proximity
sensor BGS
3 ... 280 mm
• Laser-like, focussed light spot
between 90 and 110 mm
• Detection of small objects
at greater distances
Teach-in via
cable and
Metal membrane
Teach-in button
2.5 mm in 100 mm
18–19
Photoelectric
proximity
sensor FGS
20 ... 200 mm
• The background serves
as a reflector
• Perfect for the detection
of objects from above on
conveyor belts
• Detection of objects on or
in front of steel surfaces
Metal membrane
Teach-in button
6.5 mm in 150 mm
20–21
Photoelectric
reflex sensor
0 ... 4/5 m
• Small, easily visible light
spot enables quick and easy
alignment
• Detection through small
(4 mm) apertures, thanks to the
autocollimation principle
Without Teach-in,
max. sensitivity
45 mm in 1.5 m
22–23
Teach-in
24–25
Photoelectric
reflex sensor
0 ... 5 m
• Best performance for
transparent objects
• Products from the food and
beverage sectors are detected
• Easy and secure adjustment
via Teach-in function
• Automatic adaptation of
the switching threshold
• Detection through small
(4 mm) apertures, thanks to the
autocollimation principle
Teach-in via
cable
45 mm in 1.5 m
26–27
Metal membrane
Teach-in button
28–29
Through-beam
photoelectric
sensor 0 ... 5 m
• Easily visible light spot enables
quick and easy alignment.
Without Teach-in,
max. sensitivity
130 mm in 2.0 m
30–31
Accessories
• Teach-in and battery box for
mains-independent testing and
remote adjustment of difficult
to access sensors
• IP 69K cable with stainless steel fittings
• Chemically resistant reflectors
• Stainless steel mounting bracket
• Sealing plugs for threaded holes
32–37
FRONT SCREEN WITH
SPECIAL COATING
Extremely resistant, specially
coated screen ensures reliable
cleaning and high scratch resi-
stance.
For secure cleaning.
SIMPLE AND FAST
SET-UP
Easy remote set-up via cable
and/or IO link or the, integrated
flush Teach-in button for input
directly on the sensor.
For most comfortable operation.
RECESSED
DISPLAY LED
Flush, recessed display LEDs
are bright and easily visible.
For best indication.
Can be loaded with ... Robustness for ... Concentration Loading time ... Result
Hydrogen peroxide
H
2
O
2
Cleaning procedure for antiseptic
production conditions in the
pharmaceutical and, increasingly,
in the food industry
30 % Immersed, 3 days at 20 °C passed
1)
Alcohol Additive in cleaning agents
for the food industry
70 % Immersed, 3 days at 20 °C passed
1)
Alkaline
cleaning agents
(caustic soda)
Base substance for many
cleaning agents
5 % Immersed, 7 days at 60 °C passed
1)
Acetic acid Wet-chemical processes in
the solar industry
5 % Immersed, 90 days at 20 °C passed
1)
Citric acid Juice bottling processes 4 % Immersed, 20 days at 20 °C passed
1)
Oils Hydraulic oil (Nuto H46) Immersed, 14 days at 20 °C passed
1)
Temperature drift Stressing of joints,
simulation of
ageing processes
Climatic chamber with
100 % humidity
1000 cycles,
15 min. at 0 °C
15 min. at 75 °C
passed
1)
Temperature shock Stressing of joints,
simulation of
ageing processes
2 immersions
with 2 % P3
10 cycles,
5 min. at 10 °C
5 min. at 70 °C
passed
1)
IP 69K Can be cleaned with high-
pressure and steam jets
Water 80 °C, 8 ... 10 bar
Pressure from 10 ... 15 cm
4 x 30 seconds from
different positions
passed
1)
1)
The test criterion for “passed”: the sensor is drilled into after the test and put under 1.0 bar air pressure. All joints and seals must remain gas-tight and hold.