More PrecisioncolorSENSOR // True Color Measuring Systems

2

True Color Measuring Systems

colorSENSOR

The colorSENSOR series from MICRO-EPSILON ELTROTEC
True Color sensors from Micro-Epsilon ELTROTEC measure color values, intensities andfunctions on different surfaces. As a result, they are used in a variety of applications and standfor high productivity and cost reduction in manufacturing, automation and quality assurance.

Powerful True Color controllers
for highest accuracy

Color sensors for large distances

Robust fiber optic sensors forversatile fields of application

Easy configuration
via web interface

3

colorSENSOR at a glance
General information

Page

Measuring principle & fields of application

4-5

Selection criteria

6-7

Applications

8-9

SensorType of sensor

colorSENSOR CFS1

Standard sensor

colorSENSOR CFS2

Circular sensor

colorSENSOR CFS3

Transmission sensor

colorSENSOR CFS4

Reflex sensor (standard)

Controller

Measurement
geometry

Measurement spot diameter

Page

45°x:0° / 20°x:0° / 14°x:0°

7 … 27 mm

10 - 11

11 … 70 mm

12 - 13

1.5 … 3 mm

14 - 150°:0°

0.8 … 30 mm

16 - 19

Color memory

Repeatability

Page

R34°c:0° / R11°c:0°

0°:180°colorSENSOR CFO100

Universal True Color sensor
controller

256 colors

ΔE ≤0.5

20 - 21colorSENSOR CFO200

High precision True Colorsensor controller

320 colors

ΔE ≤0.3

22 - 23

colorSENSOR OT-3-LD

Color sensor for highoffset distances

31 colors

ΔE ≤0.9

24 - 25

Accessories

Page

Connection cables & Accessories

26 - 27

Options

Basics and selection criteria

28

29 - 31

4

Measuring principle & fields of application

Relative color measurement (= color inspection):
Relative color measurement is often referred to as color inspection. A
color sensor first detects the color of a reference pattern and then thecolor of the measuring object. The controller calculates the so-calledcolor distance (ΔErel) from the difference between the two values.
If the same controller determines the color distance between ameasuring object and a reference sample, this is called relative
color measurement (pure color comparison). In the Micro-Epsilon
portfolio, the CFO100 & CFO200 and OT-3 series are used for
relative color measurement.
The most important feature of color-inspecting systems from MicroEpsilon is their primary purpose: comparing colors directly in thecontroller with a reference color taught in advance. The user receives
a good/bad evaluation as an output/switching signal. Color measuringsystems are therefore not a "raw data supplier" where a subsequentevaluation of the signal is required. The focus of color inspection
systems is on the taught-in reference colors.

colorSENSOR

The colorSENSOR measuring principle
In the field of color inspection, a measurement channel usually consistsof a sensor (also referred to as probe head or sensor head) and acontroller (evaluation unit). The surface to be measured is illuminated
via the sensor cable (fiber optics). The light (color) reflected by thesurface is detected by the sensor and evaluated by the controller.
The sensors have different measuring geometries and can optionallybe extended by mountable lenses for focusing or to achieve larger
measurement distances. Models with integrated controller of the OT
series are also available for large measurement distances.

Interfaces
Optical
fiber

Head

See pp. 29 - 31 for more details

Ideal for the detection and inspection of smallest objects

Highest precision even in high speed processes

Modern interfaces for integration in industrial environments

Advantages and special features

5

High precision True Color measuring system
The colorSENSOR CFO is a True Color controller for precise color
recognition in industrial measurement tasks. The CFO series isdistinguished by unmatched repeatability, state-of-the-art interfaces
and intuitive operation. CFS sensors with integrated optical fibers
which can be individually adapted for various measurement tasks, areconnected to the controller.

Intuitive operation via web interface
A decisive advantage of the colorSENSOR CFO controller is its easy
operation. The integrated, intuitive web interface simplifies configurationof the CFO system. The controller is connected to a PC via an Ethernet
interface. The web interface features measurement value display, set
up and configuration of e.g. exposure and measurement frequency.
Furthermore, the sensor can be adapted to suit different color groups
and tolerance spaces for each color. The web interface is not required
for standard operation. The controller autonomously evaluates thecorrectness of the color values.

Customer-specific controller adjustment
In order to improve the recognition performance and to reduce
deviating measurement values between several controllers for acertain configuration, customers can request a customer-specificcalibration for the colorSENSOR CFO200. Therefore, the sensor andthe controller are calibrated to the customer-specific reference object
in the measurement arrangement required. A measurement deviationof Delta E < 1 between the individual systems can be achieved. Dueto the calibration, the controllers are exchangeable and measure colors
which have almost the same Lab values.

Powerful multi-teach feature
254 color groups with more than 320 individual colors can be taught in
the CFO controller. The color groups are used among other things toincrease color accuracy. Since the detected colors vary with different
distances between sensor and measuring object, these color variants
can easily be taught into a color group. Individual color groups canbe created for different color shades. The color groups thus offer adecisive advantage in the case of geometry-related color deviations.

The multi-teach function allows for geometry-dependentcolor variants to be taught in color groups. The groups canbe easily managed using the web interface.

6

Selection criteria

colorSENSOR

Selection criteria - Sensors
SeriesSpecial features

CFS1-Vxx

Standard sensor
 For high-gloss surfaces, diffuse reflection without gloss
 Ideally suited for solid colors, anti-reflective coating or chrome colors
 Max. working distance of 125 mm (with reflecting surfaces) Very precise positioning of the detection point

CFS2-Mxx

Circular sensor
 For structured and metallic-effect surfaces Ideally suited for textile, paper, metallic paint, metallic nail polish,
sand, granulate or masterbatch Homogeneous illumination of the measuring point
 Max. working distance of 100 mm (with reflecting surfaces) Very precise positioning of the detection point Measurement spot diameter up to 114 mm

CFS3-Axx / CFS3-Cxx

Transmission sensor
 For transparent surfaces Ideally suited for films, glasses, translucent liquids (e.g., detergents),
filters or PET bottles
 Max. working distance between receiver and transmitter unit 50 mm
 No exact positioning necessary

CFS4-Axx
CFS4-Cxx
CFS4-Dxx
CFS4-Fxx
CFS4-Jxx
CFS4-Kxx

Reflex sensor
 For individual surfaces, direct reflection incl. gloss
 Ideally suited for metal (differentiation), plastic parts,
thread locking, coating or packaging
 For detection of gloss and material differences Ideal for part recognition, sorting tasks, presence control, color inspections
 Detection of the smallest of objects from 0.8 mm
 Working distance of 5 ... 200 mm and larger on reflecting surfaces

7

Selection criteria - Controllers
SeriesSpecial features

Applications

CFO100 Universal True Color sensor controller
 Repeatability in color ΔE ≤ 0.5
 Measuring rate max. 10 kHz (up to 2,500 parts
per second with asynchronous measurement) Color memory for 256 colors in 6 color groups Operation via keys or web interface
 Ethernet and RS232 interface
 High light output > 130 lm
 Color control of self-luminous objects also possible 3 switching outputs (digital I/O);
8 switching outputs (binary) Detection of color rings on metal and plastic sleeves Color values can be read and statistically evaluated Color mark recognition in printing industry
 Color and gray-scale detection
 Packaging control
 Color sorting tasks (e.g., O-ring control,
closures, crown caps, labels) Color recognition on interior parts (e.g., head supports)

CFO200 High precision True Color sensor controller
 Repeatability in color ΔE ≤ 0.3
 Measuring rate max. 30 kHz (up to 7,500 parts
per second with asynchronous measurement) Color memory for 320 colors in 254 color groups Operation via keys or web interface Ethernet, RS232 and USB interface,
Option with Modbus (PROFINET, EtherNet/IP,
EtherCAT possible via Gateway) High light output > 220 lm
 Color control of self-luminous objects also possible 8 switching outputs (digital I/O);
256 switching outputs (binary) Detection of color rings on metal and plastic sleeves Color mark recognition in printing industry
 Color and gray-scale detection
 Packaging control
 Color sorting tasks (e.g., O-ring control,
closures, crown caps, labels)
 Color recognition on interior parts (e.g., head supports)
 Color recognition of exterior parts(e.g., parking sensors, exterior mirrors, etc.)
 Coloring of liquids (e.g., oil, apple juice, etc.)
 Gray shades of concrete blocks and paving stones
 Internal coating of cans Distinction of materials and coatings(stainless steel/tin or brass/gold) Color values can be read and statistically evaluatedSelection criteria of sensors with integrated controller
SeriesCharacteristics

Applications

OT-3-LD Color sensor for large working distances Repeatability in color ΔE ≤ 0.9(≤ 1.5 for LD-500)
 Working distance of up to 900 mm
 Max. switching frequency: 35 kHz
 Color memory for max. 31 colors per teach-in RS232 interface and optional USB
 Color control of self-luminous objects also possible Color recognition from a large distance
up to 900 mm
 Correct product positioning in production machines
 Packaging control
 Color sorting tasks
 Color assignment with cars
 Detection of bottle crates
 Paper recycling recognition Illumination recognition as per color and intensity

8Applications

colorSENSOR

Painted car body components

Recommended system
CFO200 + CFS1
Comparing colors of parking sensor and car body
Car attachments such as parking sensors are painted separately. However, the colors of
the parts must be identical during assembly. For color assignment, the colorSENSOR CFO
sensors are used which ensure a direct color comparison between the parking sensor andthe rear bumper.

Color inspection on front spoilers

Recommended system
CFO200 + CFS2

Before installing front aprons, Micro-Epsilon color sensors check if thecolor of the attachment matches the body color. Different color groups
can be defined to cover all coatings.

Color detection of kitchen fronts
Kitchens are available in many different styles and colors. In order to ensure consistentcolor of different front panels, colorSENSOR systems from Micro-Epsilon are used.
The sensors inspect the color of the kitchen fronts in the painting plant. Color sensors
ensure that the color shade is within the specified tolerances. Even the smallest color
deviations imperceptible to the human eye can be detected reliably. Furthermore, thesensors used inspect if the color is constant over several production batches. This ensures
homogeneous colors of different components used for kitchen fronts.

Recommended system
CFO200 + CFS2

Inspection of the interior coating in aluminum cans
Aluminum cans are painted inside and outside. This transparent varnish
protects the can from corrosion and reactions with the filling media. For
presence monitoring of the interior varnish, colorSENSOR CFO200 color sensor
systems are used. These compact fiber optic sensors inspect the presence ofthe paint applied inside the tin.

Recommended system
CFO200 + CFS2/CFS4

9

Sorting of plastic components (connector colors)
Particularly with automated mounting, components must be sorted according totheir color. With its high measuring rate up to 30 kHz, the colorSENSOR CFO200
is used for sorting different plastic components. Adjustable colors and tolerances
enable high flexibility for the measurement task.

Recommended system
CFO200 + CFS3/CFS4

Distinction of shiny nuts
In modern machining centers, the automatic distinction of supplied parts
is state of the art. To reliably distinguish shiny nuts made of stainless steel
and tin, color sensors are used. The measurement is performed with acompact fiber optic sensor which can also be used in confined installation
spaces. The high accuracy of the CFO100 sensor then enables the reliable
detection and distinction of the respective metal.

Recommended system
CFO100 + CFS4

Detection of protective film
For transport protection, plastic profiles are provided with a translucent protective film. This film
protects the profiles from defects which can result from the delivery. The CFO200 True Color sensor
checks if the film has been applied correctly on the window frame. The color of the window frames
alters a little after the film has been applied.
The spectral CFO200 reliably recognizes this color difference reliably. Its high measuring rate
enables the measuring system to be used directly in the production line.

Recommended system
CFO200 + CFS4

10

Standard sensor for high-gloss surfaces

colorSENSOR CFS1

Ideally suited for solid colors,
anti-reflective coating or chrome colors
For high-gloss surfaces,
diffuse reflection without gloss
Max. working distance of 125 mm(with reflecting surfaces)
Very precise positioningof the detection point

With the standard sensor, the light emitted by the controller is sent
laterally at an angle of 45° (depending on type) onto the surface ofthe part to be inspected. The diffuse back reflection (surface color)of the sample is detected by the sensor at 0° (parallel) to the surface
and transmitted to the controller via an optical fiber. The sensors areavailable with different measuring angles and spot sizes. Further
measuring geometries are optionally available (e.g., 40°x:0°; 18°x:0°; ...)

Measurement geometryStandard sensor 45°x:0°, 20°x:0°, 14°x:0°

Receiver

20°

45°

14°

The angular illumination of the CFS1 enables a punctual illuminationof the measuring object without influencing the surface. This meansthat only the diffusely reflected part of the surface color is detected.
This measurement arrangement is best suited for high-gloss anddiffuse reflecting surfaces, since direct reflection (surface gloss) does
not influence the measurement. The sensor cable has a standard FA
connection and is therefore also compatible with other controllers(previous series such as LT or WLCS). The standard sensor offers
many advantages in terms of performance and installation possibilities.
Due to the external controller, less installation space is required at themeasuring point.

Light source0°

Measuring object

Working distance

The standard sensor enables measurements of high-gloss surfaces.

11

12
45˚

39.1

30.57
14

21

10.5

12.4

14˚

20˚

19

50

4˚

59

20

7.88
3.67

15.88

21.4
13.52

34

0˚

29.3

P3

20

16.41
16.1

35.5

P2

45˚

22.5˚

P1

25.836Countersink
for M4 screws

2x

˚

135

˚
60

15

12.97 1
14.36
32.48

35.86
60.96

ø3

6
16

21

49.6

Model

CFS1-V45

CFS1-V20

CFS1-V14

Part number

10824983

10824984

10824985

Type of sensor

Standard sensor

Working distance 1)

Measurement spot
diameter 1)

Light spot diameter 1)

P1

P2

P3

Start

12 mm

12 mm

9 mm

20 mm

50 mm

Optimal

15 mm

15 mm

15 mm

33 mm

86 mm

End

17 mm

17 mm

23 mm

45 mm

125 mm

Start

11 mm

7 mm

17 mm

11 mm

19 mm

Optimal

13 mm

7 mm

11 mm

10 mm

15 mm

End

14 mm

18 mm

20 mm

18 mm

27 mm

Start

15 mm

18 mm

20 mm

13 mm

23 mm

Optimal

15 mm

18 mm

18 mm

13 mm

27 mm

End

15 mm

18 mm

20 mm

20 mm

27 mm

ΔE ≤ 4.7

ΔE ≤ 3.5

ΔE ≤ 3.2

ΔE ≤ 2.5

ΔE ≤ 1.3

20°x:0°14°x:0°Ø 13 mm

Ø 7 mmØ 11 mm

Ø 10 mm

Ø 15 mm

130 mm

70 mm

110 mm

100 mm

150 mm< 24 ΔE / mm

< 12 ΔE / mm

< 2 ΔE / mm

< 3.3 ΔE / mm

< 0.3 ΔE / mm

Repeatability in rotation 1) 2) 4)
Measurement geometry

45°x:0°Min. target size (flat)
Minimum curvature radiusof target (curved)
Distance
Sensitivity

1) 4)

Tilt angle 1) 4)
Ambient light 1) 4)

Permissible ambient light 1) 4)
Max. tilt angle 1) 4)< 1.2 ΔE / °< 0.5 ΔE / °< 0.5 ΔE / °< 0.3 ΔE / 1,000 lx< 0.3 ΔE / 1,000 lx< 0.3 ΔE / 1,000 lx< 40,000 lx< 30,000 lx< 20,000 lx

±9°

±45°

±45°

integrated fiber-optic cable (axial) with metal-silicone (T) sheath, standard length 1.2 m;other lengths 0.3 ... 2.4 m optionally available

Connection
Mounting
Temperature range

FA (M18x1)
Storage / operation

Sensor head: -10 °C … +80 °C; cable: -60 °C … +180 °C

Humidity

20 … 60 % r.H. (non-condensing)Protection class (DIN EN 60529)
Material
Weight

IP54 3)
Aluminum black anodized, glass, glass fiber bundle with metal-silicone coating (T)260 gCompatibility

Features

ø3

˚

.24

180 g

230 g

CFO controller (LT, WLCS, FES)This sensor head has three adjustment positions
for focusing the measuring spot; all cable variants
are also available with different cable sheath, length
0.3 ... 2.4 m, vibration protection,
IP protection and suitable for drag chains.

The specified data apply to a white, diffuse reflecting surface (zenith white reference)1)
In combination with colorSENSOR CFO200 and a repeatability of ΔE ≤0.3
2)
On titanium pearl mica from a distance of 30 mm
3)With potted connection cable also available with IP67
4)
Valid for optimal working distance

All cable variants are also available with different cable sheath,
length 0.3 ... 2.4 m, vibration protection,
IP protection and suitable for drag chains.

.24

2

12

Circular sensor for structured and metallic-effect surfaces

colorSENSOR CFS2

For textiles, paper, metallic paint, sand,granulate, wood veneers or masterbatch
For structured and metallic-effectsurfaces
Homogeneous illuminationof the measuring point
Max. working distance of 100 mm(on strongly reflecting surfaces)
Very precise positioningof the detection point

With the circular sensor, the light emitted by the controller is sent as
an illuminated ring at an angle of 11° or 34° (depending on type) tothe surface of the object to be tested. The diffuse back reflection(surface color) of the sample is detected by the sensor at 0° (parallel)to the surface and transmitted to the controller via an optical fiber. The
ring illumination makes it possible to detect the diffuse color reflex
regardless of structure or reflection. The sensors are available withdifferent illumination angles and different spot sizes. Therefore, it ispossible to measure colors with a repeatability of ΔE ≤ 0.3 in relative
terms up to a working distance of 100 mm. Other sheaths and cable
lengths are optionally available.
The circular sensor opens up new fields of application for thecolorSENSOR CFO product series. Combined with the highperformance of the CFO series, the ring illumination provides evenmore precision due to uniform illumination. This compact combination
can be universally used but is also suitable for special solutions(customer-specific adaptions). The homogeneous illumination mainlyoffers advantages on strongly structured or shiny-metallic surfaces
while providing highest precision when distinguishing colors such as
white shades. The circular sensor offers many advantages in terms of
performance and installation possibilities. Due to the external controller,
less installation space is required at the measuring point.

Measurement geometry
Circular sensor R34°c:0°, R11°c:0°Illumination ring

Receiving fibers

ReceiverLight source

Receiving fibers

0°

Illumination ring

11°

Measuring object

34°

Measuring object

Due to the standard FA connection, the optical fiber is also compatible
with other controllers (previous series such as LT or WLCS).

Working distanceThe circular sensor allows an evenly illuminated larger measurement spot.

Light source

13

ø11.5
ø9

15.8

15.8

17

17

ø11.5
ø9

ø7

Model

CFS2-M11

Part number

10814900

Type of sensor

ø2.5

ø1.5

ø7

CFS2-M2010814895
Circular sensor

Working distance 1)

Measurement spot
diameter 1)

Light spot diameter 1)

Start

10 mm

Optimal

30 mm

10 mm
30 mm

End

60 mm

100 mm

Start

13 mm

11 mm

Optimal

35 mm

20 mm

End

70 mm

66 mm

Start

18 mm

11 mm

Optimal

48 mm

22 mm

End

85 mm

Repeatability in rotation 1) 2) 3)

70 mm
ΔE ≤ 0.5

Measurement geometry

R34°c:0°R11°c:0°

Min. target size (flat)Ø 13 mm

Ø 11 mm

Minimum curvature radius of target (curved)
Distance 1) 3)
Sensitivity

130 mm

110 mm< 3 ΔE / mm

< 2.5 ΔE / mm

Tilt angle 1) 3)
Ambient light< 0.3 ΔE / °< 0.3 ΔE / 1,000 lx

1) 3)

Permissible ambient light 1) 3)< 9,500 lx

Max. tilt angle 1) 3)

integrated fiber-optic cable (axial) with metal-silicone (T) sheath,standard length 1.2 m; other lengths 0.3 ... 2.4 m optionally available

Connection
Mounting
Temperature range

FA (M18x1)
Storage /operation

Sensor head: -10 °C … +80 °C; cable: -60 °C … +180 °C

Humidity

20 … 80 % r.H. (non-condensing)Protection class (DIN EN 60529)

IP64
Aluminum black anodized,
glass, glass fiber bundle with metal-silicone coating (T)Material
Weight170 gCompatibility
Features

< 4,500 lx
±45°

200 g
CFO controller (LT, WLCS, FES)

All variants are also available with different cable sheath, length 0.3 ... 2.4 m, vibration protection, IP protection,
suitable for drag chains and for temperature ranges up to 2,000 °C. In combination with a pressure-tight feed-through,a stainless steel sheath and T250° bonding, vacuum applications down to 10-5 mbar are also possible.

The specified data apply to a white, diffuse reflecting surface (zenith white reference)1)
In combination with colorSENSOR CFO200 and a repeatability of ΔE ≤0.3
2)
On titanium pearl mica from a distance of 30 mm
3)
Valid for optimal working distance14

Transmission sensor for translucent objects

colorSENSOR CFS3

For films, glass, translucent liquids,
filter or PET bottles
For transparent surfaces
Max. distance between receiverand transmitter unit 40 mm
No exact positioning necessary

With the transmission sensor, the light emitted by the controller is sentfrom one side (backlight) at an angle of 180° (parallel) to the surfaceof the object to be tested. The transmitted light component (material
color) of the sample is detected by the sensor from the opposite sideat 0° (parallel) to the surface and transmitted to the controller via an
optical fiber. Backlighting also makes it possible to measure in relative
terms the colors of liquids in a glass tube or glass body, such as apple
juice or detergent, with a repeatability of ΔE ≤ 0.3. The sensors areavailable with different ranges (distance between transmitter andreceiver) and different spot sizes. Other working distances, sheaths
and cable lengths are optionally available.

Measurement geometry
Transmission sensor 0°:180°

The transmission sensor enables the measurement of transparent andsemi-transparent products such as filters, films and optical lenses. The
measurement arrangement in transmitted light 180°:0°, combined withthe performance of the CFO series, provides even more precision.
Here, the fluctuating distance between the test object and the receiveror illumination has no noticeable influence on the measurement result.
The transmission sensor can be universally used but is also suitable for
special solutions (customer-specific adaptions). Due to the standard
FA connection, the optical fiber is also compatible with other controllers(previous series such as LT or WLCS). The transmission sensor offers
many advantages in terms of performance and installation possibilities.
Due to the external controller, less installation space is required at themeasuring point.

Transmission sensor with transmitter and receiverDistance Transmitter - Receiver
Working distanceTransmitter

Transparent
measuring object

ReceiverCFS3 transmission sensors are used for color measurements of (semi-)transparent
measuring objects such as glass, liquids and plastics.

15

ø8

ø11

ø5.8

ø7.5

30
M10
ø3

M6
ø2.5

12
ø4.5
ø2.5

ø2.5
ø1.5

11

30

2

2

8

10

12

ø6.6
ø5.8

15

ø6.6
ø4.4

Model

CFS3-A11

CFS3-A20

CFS3-C20

CFS3-C30

Part number

10810518

10810490

10810910

10811921

Type of sensor

Transmission sensor

Working distance 1)

Start

5 mm

5 mm

5 mm

5 mm

Optimal

10 mm

10 mm

10 mm

10 mm

End

15 mm

20 mm

20 mm

20 mm

1.5 mm

2.5 mm

2.5 mm

3.0 mmStart
Measurement spot
diameter 1)

OptimalEnd

Light spot diameter 1)

Working distanceTransmitter and receiver

Start

10 mm

12 mm

12 mm

16 mm

Optimal

16 mm

20 mm

20 mm

20 mm

End

24 mm

32 mm

32 mm

38 mm

Start

10 mm

10 mm

10 mm

10 mm

Optimal

20 mm

20 mm

20 mm

20 mm

End

30 mm

40 mm

40 mm

40 mm

Measurement geometry 2)

0°:180°Min. target size (flat)Ø 1.5 mm

Ø 2.5 mm

Ø 3.0 mm

Minimum curvature radius of target (curved)

15 mm

25 mm

30 mm

< 0.3 ΔE / mm

Distance 1) 3)
Tilt angle 1) 3)

Sensitivity< 0.3 ΔE / °Ambient light 1) 3)< 0.3 ΔE / 1,000 lx

Permissible ambient light 1) 3)< 40,000 lx

Max. tilt angle 1) 3)±30°
integrated fiber-optic cable (axial) with metal-silicone (T) sheath, standard length 1.2 m;other lengths 0.3 m ... 2.4 m optionally available

Connection
Mounting
Temperature range

FA (M18x1)
Storage / operation

Sensor head: -10 °C … +80 °C; cable: -60 °C … +180 °C

Humidity

20 … 80 % r.H. (non-condensing)Protection class (DIN EN 60529)

IP64

Material
WeightStainless steel, glass fiber bundle with metal-silicone sheath (T)90 gCompatibility
Features

160 g

190 g

280 g

CFO controller (LT, WLCS, FES)
All variants are also available with different cable sheath, length 0.3 ... 4 m, vibration protection, IP protection,
suitable for drag chains and for temperature ranges up to 2,000 °C. In combination with a pressure-tight feedthrough, a stainless steel sheath and T250° bonding, vacuum applications down to 10-5 mbar are also possible.

The specified data apply to transparent LEE filter 130 Clear (Y=95%)
1)
In combination with colorSENSOR CFO200 and a repeatability of ΔE ≤0.3
2)
Can also be used for indirect gloss measurement in angular arrangement 60°:60° (total reflection).
3)
Valid for optimal working distanceReflex sensor for the distinction of materials and parts

colorSENSOR CFS4

For metals, plastic parts, thread locking,coating or packaging
For individual surfaces,
direct reflection incl. gloss
Ideal for part recognition, sorting tasks,presence control, color inspections
Detection of the smallest of objects
from 0.8 mm
Working distance > 300 mm(for reflective surfaces)

With the reflex sensor, the light emitted by the controller is sent at
0° (parallel) to the surface of the part to be tested. Both diffuse anddirectly reflected portions are present in the back reflex (surface color +surface gloss). The reflected light components of the sample are also
detected by the sensor at 0° (parallel) to the surface and transmitted tothe controller via an optical fiber. The sensors are available for different
working distances and spot sizes. Other versions in other lengths ortemperature ranges are optionally available.
The reflex sensor, combined with the performance of the CFO series,
provides even more precise differentiation of the surface characteristics
of materials. The measurement arrangement in the reflex sensor oftransmitter and receiver in 0°:0° allows a quality control not only by color
but also in combination with the reflection properties of the surfacesof the product. This is needed, for example, when sorting different
materials such as stainless steel, steel, tin, zinc, aluminum, brass, goldor other colored parts.

Measurement geometry
Reflex sensor 0°:0°Working distance

160°MeasuringobjectDue to the standard FA connection, the optical fiber is also compatible
with other controllers (previous series such as LT or WLCS). The
reflex sensor offers many advantages in terms of performance andinstallation possibilities. Due to the external controller, less installation
space is required at the measuring point.

The CFS4 sensors are suitable for color measurementsof numerous surfaces such as plastics or metal.

17

ø6

ø8

ø5

ø5.8

15

ø6.6
ø5.8

12

ø2.5

ø4.5

M6
ø1.0

ø2.5

M4
Ø2.5

ø1.5

11

30

30

2

2

8

10

13

ø6.6
ø4.4

Model

CFS4-A11

CFS4-A20

CFS4-C10

CFS4-C20

Part number

10810487

10810351

10810383

10810568

Type of sensor

Reflex sensor

Working distance 1)

Measurement spot
diameter 1)

Light spot
diameter 1)

Start

5 mm

5 mm

5 mm

5 mm

Optimal

5 mm

5 mm

5 mm

5 mm

End

15 mm

20 mm

15 mm

20 mm

Start

8 mm

10 mm

8 mm

10 mm

Optimal

8 mm

10 mm

8 mm

10 mm

End

22 mm

28 mm

20 mm

28 mm

Start

10 mm

12 mm

8 mm

12 mm

Optimal

10 mm

12 mm

8 mm

12 mm

End

Repeatability in rotation 1) 2) 4)

24 mm

30 mm

26 mm

30 mm

ΔE ≤ 1.2

ΔE ≤ 0.6

ΔE ≤ 1.8

ΔE ≤ 0.6

Ø 8 mmØ 10 mm

Ø 8 mmØ 10 mm

80 mm

100 mm

80 mm

100 mm

< 13.3 ΔE / mm

< 10.4 ΔE / mm

< 13.0 ΔE / mm

< 10.4 ΔE / mm

Measurement geometry

0°:0°Min. target size (flat)
Minimum curvature radiusof target (curved)
Distance
Sensitivity1) 4)< 0.3 ΔE / °Tilt angle 1) 4)< 0.3 ΔE / 1,000 lx

Ambient light 1) 4)< 40,000 lx

Permissible ambient light 1) 4)

integrated fiber-optic cable (axial)with metal-silicone (T) sheath,standard length 1.2 m;other lengths 0.3 m ... 2.4 m optionally available

Connection

Mounting
Temperature range< 40,000 lx

integrated fiber-optic cable (axial)with metal (M) sheath,standard length 1.2 m;other lengths 0.3 m ... 2.4 m
optionally available

integrated fiber-optic cable (axial)with metal-silicone (T) sheath,standard length 1.2 m;other lengths 0.3 m ... 2.4 m
optionally available

FA (M18x1)
Storage /operation

Humidity

Sensor head: -10 … +80 °C;
Cable: -60 … +180 °C
20 … 80 % r.H. (non-condensing)Protection class (DIN EN 60529)

IP64

Material
Weight50 gCompatibility

Sensor head: -10 … +80 °C
Cable: -40 … +300 °C

90 g

Sensor head: -10 … +80 °C
Cable: -60 … +180 °C

20 … 60 % r.H. (non-condensing) 20 … 80 % r.H. (non-condensing)
IP40

Stainless steel, glass fiber bundle
with metal-silicone sheath (T)Features< 16,000 lx±45°Max. tilt angle 1) 4)

IP64

Stainless steel, glass fiber bundle Stainless steel, glass fiber bundle
with metal sheath (M)with metal-silicone sheath (T)
60 g

100 g

CFO controller (LT, WLCS, FES)
All variants are also available with different cable sheath, length 0.3 ... 2.4 m, vibration protection, IP protection,
suitable for drag chains and for temperature ranges up to 2,000 °C. In combination with a pressure-tight feed-through,a stainless steel sheath and T250° bonding, vacuum applications down to 10-5 mbar are also possible.

The specified data apply to a white, diffuse reflecting surface (zenith white reference)1)
In combination with colorSENSOR CFO200 and a repeatability of ΔE ≤0.3
2)
On titanium pearl mica from a distance of 30 mm
3)With potted connection cable also available with IP67
4)
Valid for optimal working distance5)
Only possible in combination with external illumination

Reflex sensor for the distinction of materials and parts

Model
Part number

ø7

20

20

10

17
ø2.5

20

ø0.6

.5

ø10
ø3

3

15

ø1.5

ø6

ø5

2.5

CFS4-D11/90

CFS4-D30/90

CFS4-F10/90

CFS4-F30/90

10810575

10810699

10810427

10811491
5 mm

Type of sensor

Reflex sensor

Working distance 1)

Start

5 mm

5 mm

5 mm

Optimal

5 mm

5 mm

5 mm

5 mm

End

15 mm

20 mm

15 mm

20 mm
10 mm

Measurement spot
diameter 1)

Start

8 mm

10 mm

8 mm

Optimal

8 mm

10 mm

8 mm

10 mm

End

22 mm

28 mm

20 mm

28 mm

Light spot
diameter 1)

Start

10 mm

12 mm

8 mm

12 mm

Optimal

10 mm

12 mm

8 mm

12 mm

End

24 mm

30 mm

26 mm

30 mm

ΔE ≤ 0.9

ΔE ≤ 0.6

ΔE ≤ 1.8

ΔE ≤ 0.4

Repeatability in rotation 1) 2) 4)
Measurement geometry

0°:0°Min. target size (flat)
Minimum curvature radiusof target (curved)
Distance
Sensitivity

1) 4)

Ø 8 mmØ 10 mm

Ø 8 mmØ 10 mm

80 mm

100 mm

80 mm

100 mm

< 13.3 ΔE / mm

< 10.4 ΔE / mm

< 13.0 ΔE / mm

< 10.4 ΔE / mm

< 0.3 ΔE / °Tilt angle 1) 4)< 0.3 ΔE / 1,000 lx

Ambient light 1) 4)< 40,000 lx

Permissible ambient light 1) 4)±45°

Max. tilt angle 1) 4)±30°

integrated fiber-optic cable (axial) with metal-silicone (T)sheath, standard length 1.2 m; other lengths
0.3 ... 2.4 m optionally available

Connection
Mounting
Temperature range

integrated fiber-optic cable (axial) with metal (M)sheath, standard length 1.2 m; other lengths
0.3 ... 2.4 m optionally available

FA (M18x1)
Storage /operation

Humidity

Sensor head: -10 … +80 °C;
Cable: -60 … +180 °C

Sensor head: -10 … +80 °C;
Cable: -40 … +300 °C

20 … 80 % r.H. (non-condensing)

20 … 60 % r.H. (non-condensing)Protection class (DIN EN 60529)

IP64

IP40

Material

Stainless steel, glass fiber bundle
with metal-silicone sheath (T)Stainless steel, glass fiber bundle
with metal sheath (M)Weight70 g

60 g

Compatibility
Features

5

0

R1

ø1

R1

ø12

ø5

2 Guidance bore

ø6.5

ø8

9

ø4.4

colorSENSOR CFS4

2 Guidance bore

ø9

13

ø6

20

18

110 g

100 g

CFO controller (LT, WLCS, FES)
All variants are also available with different cable sheath, length: 0.3 ... 2.4 m, vibration protection, IP protection, suitablefor drag chains and available for temperature ranges up to 2,000 °C. In combination with a pressure-tight feed-through,a stainless steel sheath and T250° bonding, vacuum applications down to 10-5 mbar are also possible.

The specified data apply to a white, diffuse reflecting surface (zenith white reference)1)
In combination with colorSENSOR CFO200 and a repeatability of ΔE ≤0.3
2)
On titanium pearl mica from a distance of 30 mm
3)With potted connection cable also available with IP67
4)
Valid for optimal working distance5)
Only possible in combination with external illumination

19

SW41

SW41

SW24

ø5.7

ø12

ø5.7

ø5.7
P1

Part number

Measurement spot
diameter 1)

Light spot
diameter 1)

5

CFS4-J03

CFS4-K18

CFS4-K34

CFS4-K34-XL

10824988

10824989

10824990

10824991

10824992
P1

P2

P3

8 mm

9 mm

7 mm

7 mm

25 mm

70 mm

80 mm

90 mm

Optimal

10 mm

11 mm

10 mm

25 mm

170 mm

110 mm

140 mm

200 mm

End

11 mm

13 mm

14 mm

55 mm

270 mm

150 mm

260 mm

320 mm

Start

2 mm

1.5 mm

5 mm

9 mm

21 mm

11 mm

16 mm

26 mm

Optimal

0.8 mm

2 mm

2 mm

6 mm

17 mm

7 mm

8 mm

22 mm
22 mm

End

1.5 mm

4 mm

6 mm

12 mm

21 mm

17 mm

26 mm

Start

2 mm

1.5 mm

5 mm

9 mm

22 mm

12 mm

20 mm

28 mm

Optimal

0.8 mm

2 mm

3 mm

7 mm

18 mm

7 mm

13 mm

28 mm

End

2 mm

3 mm

6 mm

24 mm

23 mm

18 mm

28 mm

30 mm

ΔE ≤ 13.5

ΔE ≤ 34.0

ΔE ≤ 4.3

ΔE ≤ 1.5

ΔE ≤ 1.2

ΔE ≤ 2.0

ΔE ≤ 1.2

ΔE ≤ 3.5

Ø 1 mmØ 1.5 mm

Ø 2 mm

Ø 6 mmØ 17 mm

Ø 7 mm

Ø 8 mmØ 22 mm

Measurement geometry

0°:0°Min. target size (flat)
Minimum curvature radiusof target (curved)

10 mm

15 mm

20 mm

60 mm

170 mm

70 mm

80 mm

22 mm

Distance 1) 4)< 33 ΔE /mm< 18 ΔE /mm< 11 ΔE /mm< 2 ΔE /mm< 0.3 ΔE /mm

< 3 ΔE /mm< 0.7 ΔE /mm

< 0.3 ΔE /mm

Tilt angle 1) 4)< 0.6 ΔE / °< 0.4 ΔE / °< 0.3 ΔE / °< 0.3 ΔE / 1,000 lx

Ambient light 1) 4)< 40,000 lx

Permissible ambient light 1) 4)< 4,800 lx< 30,000 lx < 10,000 lx < 4,500 lx±45°Max. tilt angle 1) 4)

integrated fiber optic cable axial with metal-silicone (T) sheath, standard length 1.2 m;other lengths 0.3 ... 2.4 m optionally available

Connection
Mounting

FA (M18x1)
Storage /operation

Sensor head: -10 °C … +80 °C; cable: -60 °C … +180 °C

Humidity

20 … 60 % r.H. (non-condensing)Protection class (DIN EN 60529)

IP54 3)

Material

Aluminum black anodized, glass, glass fiber bundle with metal-silicone coating (T)
103 g

110 g

117 g

Compatibility
Features

64.65
85.34

CFS4-J04

10824987

Start

Repeatability in rotation 1) 2) 4)

WeightM34x1.5

Reflex sensor

Working distance 1)

Temperature range

M34x1.5

CFS4-J03-0,8Type of sensor

Sensitivity

94.2

4.5
46.43
35.57

4

37.4

M18x1

5

60

ø16.5

Model

P3

53.48

60

˚

ø18

ø15

P2

31.5

ø31.5

128 g

290 g

290 g

CFO controller (LT, WLCS, FES)
All cable variants are also available with different cable sheath, length: 0.3 ... 2.4 m, vibration protection,
IP protection and suitable for drag chains.

The specified data apply to a white, diffuse reflecting surface (zenith white reference)1)
In combination with colorSENSOR CFO200 and a repeatability of ΔE ≤0.3
2)
On titanium pearl mica from a distance of 30 mm
3)With potted connection cable also available with IP67
4)
Valid for optimal working distance5)
Only possible in combination with external illumination

20

Universal True Color sensor controller

colorSENSOR CFO100

Repeatability in color ∆E ≤ 0.5
Measuring rate max. 10 kHz
INTER
FACE

Interfaces: Ethernet / RS232
Color memory for 256 colors
in 6 color groups
Configurable via web interface
or function keys
High light output >130 Im
Multi-teach feature

The colorSENSOR CFO100 is a powerful controller for precise
color recognition in industrial measurement tasks. The controller isdistinguished by high color accuracy, state-of-the-art interfaces andintuitive operation.

Settings can also be madein the web interface or via
the keys on the controller.

Using a modulated high-power white light LED, a white light spot is
projected via the fiber optics onto the surface of the measuring object.
Part of the light that is back scattered from the target is directed onto aperceptive True Color detector via the same fiber optics, separated into
long-, medium- and short-wave light components (X=long, Y=medium,
Z=short) and transformed into L*a*b* color values.
The intuitive web interface allows easy teach-in of 6 color groups withup to 256 colors in total. Multi-teach can alternatively be done via
the keys. One function alone adapts the illumination, averaging andsignal amplification to the current measurement situation. Furthermore,tolerance models and tolerance values can be adjusted individually.
If the sensor recognizes one of the taught colors, the switching statechanges via three digital outputs. Using the binary output switchingensures reliable test performance in the face of a discontinuity whileproviding output of up to 6 color groups.

Marking detection on cosmetics bottles­
When automatically printing on semi-transparent glass ceramic bottles, it is necessary to
determine the exact position for the printing. Therefore, a reference mark for printing isembossed into the bottles. The embossing causes a slight color difference compared to therest of the bottle surface. This color deviation is detected by the CFO100. This determines
the position for the print that is applied below the embossing. If the marking is missing, thebottle is considered as faulty and will be rejected immediately. Therefore at the same time, agood / bad evaluation can be carried out as part of a quality control.

21

Model

CFO100

CFO100(100)Part number
No. of measurement channels
Repeatability 1)
Color distanceSpectral range
Color spaces
Illuminants
Standard observer
Tolerance model
Color memory
Measuring rate
Temperature stability

10234670

10234670.100

1∆E ≤ 0.5∆E ≤ 1.0
400 ... 680 nm
XYZ, xyY, L*a*b*, L*u*v*, u’v’L
D65
2°Classification; sphere (ΔE); cylinder (ΔL, Δab); box (ΔL, Δa, Δb)max. 256 colors in non-volatile EEPROM with parameter setsmax. 10 kHz, standard 1 kHz (depending on number of colors learned and setting for averaging)< 0.1 % FSO / K
white light LED (425 ... 750 nm); AC operation (luminous flux at 1 kHz 130 lm)(adjustable or OFF for primary light source, switchable via software)Light source
Permissible ambient light
Synchronization
Supply voltage
Max. current consumption
Signal input

max. 40,000 lx (depending on the CFS sensor)
Possibility of synchronization is given
18 ... 28 VDC
500 mA
1 (IN0), configurable via keys or web interface (trigger, teach, delete, lock, calibration)

Digital interface

Ethernet, Modbus (TCP/RTU), PROFINET 3),
EtherNet/IP 3), EtherCAT 3)

RS232 (standard 19200 Baud) 2), Ethernet

Switching output

OUT0 - OUT2 Push-Pull / NPN / PNP (color recognition, binary coding 6 color groups)

Connection

opticalscrewable optical fiber via FA socket M18x1, length 0.3 m ... 2.4 m, min. bending radius 18 mm

electrical

8-pin flange connector M12A (Power/PLC); 4-pin flange socket M12D (PC/Ethernet DHCP-capable);(connection cable see accessories)

Mounting

DIN rail mounting/screw connection via adapter (see accessories)-10 … +85 °C-10 … +55 °C
20 … 80 % r. H. (non-condensing)
15 g / 6 ms in 3 axes, 2 directions and 1000 shocks each
2 g / 10 … 500 Hz in 3 axes, 10 cycles each
IP65 (when connected)
Aluminum, black anodized
approx. 200 gwith all CFS sensors 4)

Storage
Operation

Temperature range

Humidity
Shock (DIN EN 60068-2-27)
Vibration (DIN EN 60068-2-6)
Protection class (DIN EN 60529)
Material
WeightCompatibility
Control and display elements

Operation via keys and web interface, visualization with 13 white LEDs
Multi-color teach function, automatic adjustment of illumination brightness, measurement signal amplification
and averaging depending on the measurement frequency, adjustable hold time of > 30 µs

Features

FSO = Full Scale Output
1)
Maximum color distance ∆E of 1000 successive measurements of the color value of a red and a dark gray reference tile (R = 5%),
measured with the CFS4-A20 sensor at 1000 Hz and brightness adjustment with a white standard (R = 95%)
2)
Adjustable up to max. 115200 Baud3)
Optional connection via interface module4)
Also compatible with previous series (FAR, FAD, FAL, FAZ and FAS)

7.25

13

M12x1

60

10

2

11

.3

R0

15.1
19.7

10
26.9
19.9
12.9

31

50

M18x1

24

25

11

25

39

Dimensions:
Dimensions in mm, not to scale

22High precision True Color sensor controller

colorSENSOR CFO200

Repeatability in color ∆E ≤ 0.3
Measuring rate up to 30 kHz
INTER
FACE

Interfaces: Ethernet / Modbus /RS232 / USB
Color memory for 320 colors
in 254 color groups
Configurable via web interface
or function keys
High light output >220 Im
Multi-teach feature
Also suitable for color control
of self-luminous objects

The colorSENSOR CFO200 is a high-performance controller for precise
color recognition in industrial measurement tasks. The controller isdistinguished by high color accuracy, state-of-the-art interfaces andintuitive operation.
Using a modulated high-power white light LED, a white light spot is
projected via the fiber optics onto the surface to be detected. Part of thelight that is back scattered from the target is directed onto a perceptive
True Color detector via the same fiber optics, separated into long‑,
medium- and short-wave light components (X=long, Y=medium,
Z=short) and transformed into L*a*b* color values.
The intuitive web interface allows easy teach-in of 254 color groups
with 320 colors in total. Multi-teach can alternatively be done via thekeys. One function alone adapts the illumination, averaging and signal
amplification to the current measurement situation. Furthermore,tolerance models and tolerance values can be adjusted individually.

Ideal for integration in modern environments
The CFO200 can be connected via Ethernet, Modbus, RS232 and USB.
Via an additional interface module, PROFINET, Ethernet/IP and EtherCAT are available.

If the sensor recognizes one of the taught colors, the switching statechanges via 8 digital outputs. Using the binary output switching ensuresreliable test performance in the face of a discontinuity while providing
output of up to 254 color groups.
The CFO controller is also suitable for detecting the color of selfluminous objects. For this purpose, the internal illumination can
optionally be deactivated via the software.

Recognition of anti-reflection coating on lenses
Optical surfaces of many lenses have an anti-reflection coating which should reduce surface
reflections. These anti-reflective layers must be applied evenly; otherwise undesired color
gradients may occur which might impair the function of the lens. In order to inspect thevisual color impression (green-blue for highly sophisticated coatings) and the coating
quality, CFO200 color sensors are used. The standard sensors detect the color reflectionof the lenses. Due to its high resolution, the CFO200 detects even the slightest of color
variations reliably.

23

Model

CFO200

CFO200(100)Part number
No. of measurement channels
Repeatability 1)
Color distanceSpectral range
Color spaces
Illuminants
Standard observer
Tolerance model
Color memory
Measuring rate
Temperature stability

10234671

10234671.100

1∆E ≤ 0.3∆E ≤ 0.6
400 ... 680 nm
XYZ, xyY, L*a*b*, L*u*v*, u’v’L
D65
2°Classification; sphere (ΔE); cylinder (ΔL, Δab); box (ΔL, Δa, Δb)max. 320 colors in non-volatile EEPROM with parameter sets
standard 1 kHz; max. 30 kHz (depending on number of colors learned and setting for averaging)< 0.1 % FSO / K
white light LED (425 ... 750 nm); AC operation (luminous flux at 1 kHz 220 lm)(adjustable or OFF for primary light source, switchable via software)Light source
Permissible ambient light
Synchronization
Supply voltage
Max. current consumption
Signal input

max. 40,000 lx (depending the CFS sensor)
Possibility of synchronization is given
18 ... 28 VDC
500 mA
4 (IN0 - IN3): IN0 via keys; IN0 - IN3 configurable via web interface (trigger, teach, delete, lock, calibration)

Digital interface

Ethernet, Modbus (TCP/RTU), USB,
PROFINET 3), EtherNet/IP 3), EtherCAT 3)

RS232 (standard 19200 Baud) 2), Ethernet, USB

Switching output

OUT0 - OUT7 Push-Pull / NPN / PNP (color recognition, binary coding 254 color groups)
screwable optical fiber via FA socket M18x1, length 0.3 m ... 2.4 m, min. bending radius 18 mm

opticalConnection

electrical

8-pin flange socket M12A (Power/PLC); 8-pin flange socket M12A (signal);
4-pin flange socket M12D (Ethernet DHC capable); 5-pin flange socket M12A (USB) (connection cable see accessories)

Mounting
Temperature range

DIN rail mounting/screw connection via adapter (see accessories)-10 … +85 °C-10 … +55 °C
20 ... 80 % r. H. (non-condensing)
15 g / 6 ms in 3 axes, 2 directions and 1000 shocks each
2 g / 10 … 500 Hz in 3 axes, 10 cycles each
IP65 (when connected)
Aluminum, black anodized
approx. 200 gwith all CFS sensors 4)

Storage
Operation

Humidity
Shock (DIN EN 60068-2-27)
Vibration (DIN EN 60068-2-6)
Protection class (DIN EN 60529)
Material
WeightCompatibility
Control and display elements

Operation via keys and web interface, visualization with 13 white LEDs
Multi-color teach function, automatic adjustment of illumination brightness, measurement signal amplification
and averaging depending on the measurement frequency, adjustable hold time of > 30 µs

Features

FSO = Full Scale Output
1)
Maximum color distance ∆E of 1000 successive measurements of the color value of a red and a dark gray reference tile (R = 5%),
measured with the CFS4-A20 sensor at 1000 Hz and brightness adjustment with a white standard (R = 95%)
2)
Adjustable up to max. 115200 Baud3)
Optional connection via interface module4)
Also compatible with previous series (FAR, FAD, FAL, FAZ and FAS)

7.25

13

M12x1

60

10

2

11

.3

R0

15.1
19.7

10
26.9
19.9
12.9

13

31

50

M18x1

24

25

11

25

39

Dimensions:
Dimensions in mm, not to scale

24

Color sensor for high offset distancescolorSENSOR OT-3-LD

Repeatability in color ∆E ≤ 0.9
Max. switching frequency 35 kHz
INTER
FACE

Interfaces: RS232 / USB
Color memory for max. 31 colors
per teach-in
Measurement distance
up to 900 mm
Also suitable for color control
of self-luminous objects

The colorSENSOR OT sensors are ideal for color determination froma large distance according to the True Color method. The OT seriesconsists of sensor types with different working distances and spot
sizes. The sensor housing of the OT3 color sensors includes thedetector, the evaluation unit and the illumination so that no external
controller is required.
Using a modulated white light LED, a white light spot is projected via
the integrated lens onto the measuring object to be tested. Part of thelight that is back scattered from the measuring object is directed onto
a perceptive True Color detector element via the center of the lens,separated into long-, medium- and short-wave light components.
Subsequently, it is transformed into L*a*b* color values.
A key on the sensor housing enables to teach in 31 colors/color groups.
Using the separate configuration software, the sensor can be adjusted
to the current measuring situation. If the sensor recognizes one of thetaught colors, the color group is output via the corresponding digital
switching outputs.
The OT sensor is also suitable for detecting the color of self-luminous
objects. For this purpose, the internal illumination can optionally be
deactivated via the software.

The True Color sensors of the OT3 series are designed for measuring tasks where a large
distance from the measuring object must be maintained.

25

Model

OT-3-LD-200-6

OT-3-LD-200-12

OT-3-LD-200-26

OT-3-LD-500-23

OT-3-LD-500-50

10234434

10234437

10234438

10234085

10234086

Start

100 mm

50 mm

50 mm

100 mm

100 mm

Optimal

200 mm

200 mm

200 mm

500 mm

500 mm
900 mmPart number
Working distance

Measurement spot
diameterLight spot diameterEnd

700 mm

500 mm

500 mm

900 mm

Start

4 mm

4 mm

6 mm

6 mm

8 mm

Optimal

6 mm

12 mm

26 mm

25 mm

58 mm
105 mm

End

28 mm

32 mm

70 mm

46 mm

Start

4 mm

4 mm

6 mm

6 mm

8 mm

Optimal

6 mm

12 mm

26 mm

25 mm

58 mm

End

28 mm

32 mm

70 mm

46 mm

Repeatability 1)

ΔE ≤ 0.9

Color distance

ΔE ≤ 1.8

105 mm
ΔE ≤ 1.5
ΔE ≤ 3.0

Spectral range

400 ... 680 nm

Color spaces

X/Y INT; s/i M (Lab)

Illuminants

white light LED

Standard observer

2°

Tolerance model

3D (sphere; TOL); 2D (cylinder; CTO&ITO)

Color memory

max. 31 colors in non-volatile EEPROM with parameter sets

Measuring rate

max. 35 kHz (depending on number of colors learned and setting for averaging)Temperature stability< 0.01 % FSO / K

Light source

ultra-bright white light LED, AC/DC/PULSE modes (adjustable or OFF for self-luminous objects, switchable via software) 2)

Permissible ambient lightmax. 5,000 lx (in AC and PULSE modes)

Synchronization

Possibility of synchronization is given

Supply voltage+24 VDC (± 10 %), reverse polarity protection, overload-proof

Max. current consumption

160 mA

Signal input

1 key and IN0 for external teaching of the color references

Digital interface

RS232 (max. 115200 kBaud) (optional USB or Ethernet via converter)

Switching output

OUT0 - OUT4, digital (0V/+Ub), short circuit proof,
100 mA max. switching current NPN-, PNP-capable (switchable light/dark switching)

Digital output

none

Connection

8-pin flange socket (Binder Series 712) (Power/PLC); 4-pin flange socket (Binder Series 707) (PC)(see accessories for connection cable)

Mountingwith two slotted holes (8 x 4.5 mm)
Storage

Temperature range-20 … +85 °C

Operation-20 … +55 °C

Humidity

20 … 80 % r. H. (non-condensing)
OpticsProtection class(DIN EN 60529)

IP67

Controller

65

IP64

59 anodized)
Aluminum black anodized (lens support: aluminum, naturally

Material
Weight57

approx. 300 g

approx. 670 g

1 key for external teaching of the color references; switching state display with 5 yellow LEDs

Featuresmanual adaption of illumination brightness, amplification of measurement signal and averaging;
adjustable hold time of 0 ... 30 ms

65
59
57

4.5

8

Control and display elements

FSO = Full Scale Output
1)
Maximum color distance ∆E of 250 successive measurements of the color value of a light gray reference tile (R = 61%),
measured with sensor FAR-T-A2.0-2,5-1200-67° at 1000 Hz and brightness adjustment with a white standard (R=95%)
2)
Suitable for illumination testingOT-3-LD-200

26

8

OT-3-LD-500

82

4.5
8

n

Ø80

65
59
57
4.5

n

Ø80

M4 - 5 depth

M4 - 5 depth

22

Dimensions:
Dimensions in mm, not to scale

8

7

8

4.5
57
59
65

26

119.5

ø55

65
59
57

4.5

57
59
65

8

4.5

59

7

7

59

26

Connection cables & Accessories

colorSENSOR

Connection cables

Mounting

Sensor
CSF1
CSF2
CSF3
CSF4

Accessories

Supply/RS232
Power supply unit
PS2031
Art. no. 2420096
Connection PLC (I/O)

Art. no.
11234717 (2 m)
11234718 (5 m)

Digital output/
Ethernet

Art. no.
11234735 (2 m)
11234736 (5 m)

Vacuum feed-throughArt. no. 10811916

Connection PLC (I/O)

Art. no.
11234722 (2 m)
11234723 (5 m)C-mount lensArt. no. 11293186
and others

Process interfaces(USB)

Art. no.
11234732 (2 m)
11234733 (5 m)

Mounting adapter
Art. no.
11234713
11234762
11234763

Pin assignment
CAB-M12-8P-co-fm-straight; Xm-PUR; open ends
(Art.-No.: 11234717; 11234718)
Connection cable SYS; Power and PLC(max. length 10 m, PUR sheath)

Pin

Color

CFO100/200

1

white

IN0

2

brown

+UB

3

green

TX

4

yellow

RX

5

gray

OUT0

6

pink

OUT1

7

blue

GND

8

red

OUT2

White standard
Art. no.
11234694
11234695

27

Connection cables
Supply/PLC
Power supply unit
PS2031
Art. no. 2420096

Digital output/
serial/Ethernet

Mounting

Art. no.
11234091 (2 m)
11234099 (5 m)

RS232Art. no.
11234095 (2 m)
11234103 (5 m)

No separate sensor orcable - integrated insensor head

Screw connection via integrated bore holes

USB
Art. no.
11234096 (2 m)
11234104 (5 m)
Ethernet
Art. no.
11234910+11234735(2.5 m)11234910+11234736(5.5 m)Pin assignment
CAB-M9-8P-co-straight; Xm-PUR; open ends
(Art.-No.: 11234091; 11234098)
Connection cable to power/PLC or digital I/O(max. length 10 m, PUR sheath)SensorPin

Color

OT-3-LD

1white

GND (0V)2brown+24 VDC (± 10%)

3

green

IN0

4

yellow

OUT0

5

gray

OUT1

6

pink

OUT2

7

blue

OUT3

8

red

OUT4

Accessories
White standard
Art. no.
11234694
11234695

28

Options

colorSENSOR

Customer-specific adaptations are possible for all sensors. We would be pleased to manufacture yoursensor according to your specification/requirements. Please contact Micro-Epsilon Eltrotec!

Examples of customer-specific modifications:
Function Special types for CFS4 reflex sensor
 Special types for CFS3 transmission sensor
or CFS1 angle sensor
 Special types for CFS5 receiving sensor
Special types for each function

Optical fiber sheath Silicone-metal sheath VA stainless-steel sheath Metal sheath PVC metal sheath PVC special sheath BOA special sheath MA-radius-limiting special sheath

)

ngth

er (le

l fib
ptica

O

Cable sheaths

Fiber bundle diameter 0.6 / 1 / 1.5 / 2.5 / 3 mm

Fiber bundle diameter

Optical fiber (length) Available from 300 mm
 Standard length 1,200 mm
 600, 1,800 and 2,400 mm optionally available Individual length of 0.3 ... 2.4 m possible

Possible temperature ranges:
Sensor: -40 °C ... + 2.000 °C
Optical fiber: -270 ... +600 °C°C

Aperture angle
 Standard 67°
 Optional 22° / 35°

Ambient conditions

Ambient conditions
 Special versions with increased vibration resistance (VS) Special variants with special bonding for high temperatures (T250 / T400)
 Pressure-tight special variants with vacuum feed-through (up to 10-5 mbar)
Aperture Angle

Mountable lenses
 Focusing for small light spots (> 0.8 mm)
 Large object distances (= distance between sensor andmeasuring object) up to 200 mm
 Distances > 300 mm with C-mount lensMountable lenses
VacuumVacuum feed-throughVacuum suitability
The color sensors and optical fibers consist of passive components
and do not give off heat. In vacuum, sensors (temperature bondingT250), optical fibers (stainless steel sheath), and the vacuum feedthrough up to 10 - 5 mbar can be used.
Vacuum-suitable sensor headand cable (optical fiber)29

Basics and selection criteria

In order to create a basis for worldwide color communication andstandardized color measurement systems, the CIE (Commissioninternationale de l’éclairage, International Commission on Illumination)
was founded in 1931 and is responsible for monitoring and inspectionof internationally recognized color values. The observer was defined(see "Standard observer") in a study based on individual color
impression.

Furthermore, light sources such as fluorescent lamps, candles, thesun etc. were defined as illuminants. If a sample is measured using
a color measurement device, the factors illuminant and observer are
standardized, adjustable parameters with international validity. The
color perception of the test persons was defined in the standard
spectral sensitivity functions (long-), (medium-) and (short-wave).

Color assessment based on:
Hue: 		Color differentiation, e.g., red, green, blue, yellow, etc.

Brightness:		

Intensity of light perception, color appears darker or brighter

Colorfulness:

Intensity of the color compared with a gray color (not colored) with the same brightness

Saturation:		

Describes the relation between colorfulness and brightness

2º
10º

z( λ)
Standard spectral values

2.0

1.5

y(λ)

1.0

x( λ)

People perceive colors differently. In order to achieve perceptual
uniformity, the International Commission on Illumination (CIE) stipulates
spectral weighting functions. These functions describe how people
perceive colors. They are based on experimentally determinedsensitivity curves of the long-wave L-cone (X), medium-wave M-cone(Y) and short-wave S-cone (Z).
This is how each perceivable color can, due to its characteristics, beassigned an exact location in a color space and be communicatedworldwide.

0.5

0
400

500

600

700

Wavelength in nm

Color spaces
The human eye has three color receptors (L = long, M = middle, S =short). This is why 3D color models are used in order to clearly identify
colors and to compare these with other colors (see color distance).
In the industry, particularly the L*a*b* color space has become
established.
Standard color space CIE 1931 (xyY color space)
This color space is based on perceived color in human color vision.
(very large green and small blue/red range).
x and y = color vectors describing hue and saturation
Y = value (brightness) scaled from 0 to 100
W = white point (x=y=z=1/3)
Spectral lines = "pure" colors
Black body curve = color as temperature of an ideal, black radiator!

Suitable for testing green and white LEDs.

Image © Torso-Verlag

xyY Color spaceBasics and selection criteria

30

colorSENSOR

Standard color space CIELAB76
The L*a*b color space comprises all colors perceptible to the humaneye. In this 3D color model, each hue is described with approximately
the same volume of space. The L*a*b* color space has establisheditself in the industry and is used by device manufactures for color
inspection.
Each color is described by the color location (L*; a*; b*).
L* = lightness (black = 0; white = 100)a* = green/red colors (green = -100; red = +100)
b* = blue/yellow colors (blue = -100; yellow = +100)!

Ideal color space for color test, as each color range is thesame size.

L*a*b* Color space

Color distance ΔE
The larger the difference between the colors within the color space, themore clearly the difference can be perceived with the human eye. Thisis defined as ΔE color distance.
Delta E; ΔE; dE = is a metric for the perceived color distance between
colors (DIN 5033)

∆b*
∆L*

∆a*

∆b*

L*=100

∆E*

∆L*

+a*

- b*

ΔE of 11.61 corresponds to the difference between sample (p) andcomparison (v)Sample (p)Comparison (v)RGB Color space
It combines the colors red (R), green (G) and blue (B) into one. It is anadditive color space, i.e. all three colors as one result in the color white.
Black color is produced when R/G/B = 0/0/0.
RGB
Color
space

The RGB color space has established itself in the display industry but
is of no interest for industrial measurement technology since not everycolor can be displayed and measured.

Image © Torso-Verlag

∆E*

+b*

- a*

Interpretation:
ΔE > 5Large color difference
ΔE 0.5 … 1 Limits of human perception
ΔE < 0.3
Required by the paper industry
ΔE < 0.1
Required by the automotive industry

∆a*

L*=0

31

Standard illuminant D65

Standard illuminant A

Standard illuminants and light sourcesStandard illuminants are defined from 380 to 780 nm.
 Illuminant A= light bulb with 2865 k
 Illuminant D65 = medium daylight with approx. 6500 k
 Illuminant F11= fluorescent lamp
 Cold white LED

400

500

600

700

400

Illuminant F11

400

500

500

600

700

Cold white LED

600

700

400

500

600

700

Measurement geometries
Standard sensor 45°x:0°, 20°x:0°,
14°x:0°Circular sensor R34°c:0°,
R11°c:0°

Receiver20°

Illumination ring

45°

14°

Light source

Light source

Receiving fibers

ReceiverLight source

0°0°Receiving fibers

Illumination ring

11°

Measuring object

Measuring object

Transmission sensor 0°:180°

34°

Measuring object

Reflex sensor 0°:0°Distance Transmitter - Receiver

Transmitter

Transparent
measuring object

ReceiverWith structured surfaces, it is recommended to perform the inspection
from all four directions (north, east, south, west on one side) and to
calculate the average on different positions or to illuminate the specimen
from all directions (ring illumination (R45°c:0°) and to measure only one

Working distanceWorking distance0°

Measuringobjectposition. With translucent samples, a defined background or folding
the sample should provide sufficient layer thickness for the inspection.
You can alternatively use some illumination as background in order toinspect in transmission (0°:180°) mode.

Modifications reserved / Y9761371-G072024GKE

Sensors and Systems from Micro-Epsilon

Sensors and systems for displacement,
distance and position

Sensors and measurement devices for
non-contact temperature measurement

Measuring and inspection systems formetal strips, plastics and rubber

Optical micrometers and fiber optics,
measuring and test amplifiers

Color recognition sensors, LED analyzers
and inline color spectrometers

3D measurement technology for
dimensional testing and surface inspection

MICRO-EPSILON Eltrotec GmbH
Manfred-Wörner-Straße 101 · 73037 Göppingen / Germany
Tel. +49 (0)7161 98872-300 · Fax+49 (0)7161 98872-303
eltrotec@micro-epsilon.de · www.micro-epsilon.com