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SICK Contrast sensors®

Contrast sensors

SICK – The pioneer in contrast sensors for more than 60 years

Contrast sensors are primarily used in packaging/printing machines for the detection of printed or control marks. SICK's line of KT contrast sensors detects even the smallest contrasts at the highest speeds, such as print marks on foils or packaging. They detect minute grayscale variations between the mark and the background on matte, shiny or transparent surfaces. A variety of device types with different contrast resolution methods and teach-in versions are available to meet wide-ranging requirements.

KTM Prime Contrast sensors

Product family KTM Prime

Mini, easy, speedy, robust

  • Small, tried-and-tested housing, also available in stainless steel
  • High grayscale resolution
  • Very large dynamic range means reliable detection of contrasts on glossy materials
  • Static and dynamic teach-in in one variant
  • Switching frequency: 15 kHz
  • KTM Prime with IO-LInk functions

KT10 Contrast sensors

Product family KT10

The industry choice for high-speed and precision mark detection

  • Very low jitter (< 10 μs)
  • Precise light spot
  • Best contrast resolution thanks to RGB LED technology
  • Two interchangeable light exits
  • Five storage banks for settings
  • Automatic drift correction
  • Fast switching frequency of 25 kHz
  • Easy-to-read bar graph display

KTM Core Contrast sensors

Product family KTM Core

Mini, easy, speedy

  • Small, tried-and tested housing
  • High grayscale resolution
  • Very large dynamic range means reliable detection of contrasts on glossy materials
  • Switching frequency: 10 kHz
  • White light

KTS Core Contrast sensors

Product family KTS Core

Universal contrast detection in modern housing

  • White LED or RGB LED
  • High gray line resolution
  • Very large dynamic range means reliable detection of contrasts on glossy materials
  • 25 kHz switching frequency
  • Display for easy sensor adjustment
  • 2-point and dynamic teach-in
  • Manual switching threshold adjustment
  • Light/dark switching

KTX Prime Contrast sensors

Product family KTX Prime

Contrast detection with TwinEye-Technology in tried-and-tested housing. Innovation in familiar housing for the very best sensor performance

  • TwinEye-Technology for increased depth of field and sensing distance tolerance
  • 50 kHz switching frequency and 5 μs jitter
  • Large dynamic range means reliable detection of contrasts on glossy materials
  • 7-segment display
  • Color mode
  • Assembly feedback
  • IO-Link and automation functions
  • Flexible sensor setting thanks to various sensor parameters

KTS Prime Contrast sensors

Product family KTS Prime

Innovative TwinEye-Technology for better contrast detection

  • TwinEye-Technology for increased depth of field and sensing distance tolerance
  • 50 kHz switching frequency and 5 μs jitter
  • Large dynamic range means reliable detection of contrasts on glossy materials
  • 7-segment display
  • Color mode
  • Assembly feedback
  • IO-Link and automation functions
  • Flexible sensor setting thanks to various sensor parameters

KTL180 Contrast sensors

Product family KTL180

Safe object detection at high machine speeds

  • 31.2 kHz switching frequency at a response time of 16 µs
  • High dynamic range
  • Multi-functional 7-segment display
  • Job save for easy format change
  • 1-point, 2-point and dynamic teach-in
  • Master-slave function
  • A wide range of different fibers

KT5 Contrast sensors

Product family KT5

Contrast sensor in standard metal housing

  • Best contrast resolution thanks to RGB LED technology
  • Intuitive 10-segment bar display indicates the detection reliability
  • Dynamic or static teach-in method or manual potentiometer
  • Switching frequency of 10 kHz
  • Automatic gloss adjustment for highly reflective materials
  • Various sensing distances and light spot directions
  • M12 plug can be rotated 90°

KT8 Contrast sensors

Product family KT8

Laser contrast sensor and CAN communication

  • Laser version offers sensing distances of 30 mm to 800 mm
  • Very small and precise laser light spot (Class II)
  • Fast switching frequency of 17 kHz
  • Detection reliability displayed in the bar graph display
  • CAN interface version for parameter setup, diagnostics and function selection
  • Very precise light spot

KT6 Contrast sensors

Product family KT6

High-performance and tough metal housing for intelligent contrast detection

  • 3-color, RGB LED technology
  • Two-point teach-in (mark and background)
  • Tough, metal housing
  • Automatic gloss adjustment for highly reflective materials
  • 10 mm sensing distance
  • Light exits at end or side, based on model
  • Common mounting footprint

KT3 Contrast sensors

Product family KT3

High-performance contrast sensors in a compact housing

  • Very small housing
  • Laser version with long sensing distance
  • Simple teach-in (when machine is stopped or during operation)
  • Integrated switching threshold adjustment for high-gloss objects
  • Reliable operation for jittering materials
  • Switching frequency of 1.5 kHz

SICK Color sensors


Color sensors

Focus on color

Color sensors detect the color of a surface. The sensors cast light (red, green, and blue LEDs) on the objects to be tested, calculate the chromaticity coordinates from the reflected radiation and compare them with previously stored reference colors. If the color values are within the set tolerance range, a switching output is activated.

CSM Color sensors

Product family CSM

Mini, easy, smart

  • Color sensor in a new miniature housing
  • Static and teach-in method for 1 color using control cable or control panel
  • Over IO-Link up to 8 colors teachable
  • Switching frequency: 1.7 kHz
  • Sensing distance: 12.5 mm
  • Compatibility with older color sensors thanks to cable with male connector M12

CS8 Color sensors

Product family CS8

High-performance color sensing

  • One (CS8-1) or four (CS8-4) colors can be saved
  • 12.5 mm or 60 mm sensing distance
  • Fast response time up to 85 µs
  • High resolution color
  • Bar graph display shows the correlation of the colors
  • Extremely precise light spot and high resolution
  • Metal housing with two light exits (interchangeable)

SICK Luminescence sensors


Luminescence sensors

The bright idea for fluorescent material

Luminescence sensors detect visible and non-visible marks that illuminate when using ultraviolet (UV) light. Fluorescent material and marks are reliably detected independently of their pattern, colors or surface conditions on any material. Luminescence sensors emit UV light with a wave length of approximately 375 nm. Fluorescent substances convert the UV light into long-wave visible light, which is then received and evaluated by the luminescence sensor.

LUTM Luminescence sensors

Product family LUTM

Small, intelligent luminescence sensor

  • Luminescence sensor in a miniature housing
  • Static and dynamic teach-in methods in a single variant
  • Reliable detection even at a low level luminescence
  • Switching frequency: 6 kHz
  • Operating range: 8 ... 20 mm
  • IO-Link function
  • Compatibility with older LUT sensors thanks to cable with male connector M12

LUT8 Luminescence sensors

Product family LUT8

For universal use with easy adjustment

  • Tough metal housing
  • Simple sensitivity adjustment in 8 stages
  • Bar graph display provides information about the luminescence intensity
  • Sensing distances selectable through interchangeable lenses
  • Additional optical filters suppress background luminescence
  • Fiber-optic cable connection (with 20 mm lens)
  • Switching and analog output

LUT9 Luminescence sensors

Product family LUT9

The new standard for high-performance luminescence sensors

  • Simple teach-in
  • Operating range up to 250 mm
  • Version with IO-Link for remote monitoring
  • Bar graph display provides information about the luminescence intensity
  • High speed (6.5 kHz), standard (2.5 kHz), high resolution (500 Hz) models
  • Additional optical filters suppress background luminescence
  • Fiber-optic cable connection (with 20 mm lens)
  • Switching and analog output

LUT3 Luminescence sensors

Product family LUT3

The solution for standard applications

  • Rugged metal housing
  • Sensing distance: 10, 20, or 50 mm
  • Sensing ranges can be selected with interchangeable lenses
  • Sender LED UV (375 nm)

LUT1 Luminescence sensors

Product family LUT1

Compact sensor for long sensing distances

  • Infinite switching threshold adjustment via membrane keyboard
  • Long sensing distances up to 150 mm
  • Sender LED UV (375 nm) or blue (470 nm)
  • Switching frequency 600 Hz or 6 kHz

SICK Glare sensors


Glare sensors

Gloss and performance combined

The Glare sensor detects and distinguishes glare on even surfaces. It also provides maximum reliability and saves costs. Previously, gloss on object surfaces was a disruptive factor that regularly had engineers breaking into a sweat. Now, gloss properties are a distinguishing criterion for process control – regardless of color, transparency or pattern. And it will be engineers’ eyes that shine, not their brows. Equipped with intelligent Delta-S-Technology, Glare is a further milestone in customer-oriented sensor development. Once again, SICK is confirming its leading position in opto-electronic sensors for the detection of a range of objects.

Glare Luminescence sensors

Product family Glare

The authority on gloss

  • Object detection and differentiation on the basis of surface gloss level
  • Configurable in many different operating modes to meet the requirements of any application
  • Integrated alignment aid
  • Integrated automation functions
  • Two digital push-pull outputs and one configurable input
  • Sensitivity adjusts to object properties
  • IO-Link provides easy data access from the PLC
  • Quick and easy configuration

SICK Fork sensors


Fork sensors

Simplicity, flexibility, and precision – combined in a single fork sensor.

SICK fork sensors combine senders and receivers in a single housing, meaning that they can be adjusted quickly. Thanks to the precise, focused light beam and the high detection accuracy, the sensors also detect very minor light attentuation differences. Many different fork sizes, straightforward mounting, and exceptionally high ambient light immunity are just some of the advantages of these fork sensors.

WF Fork sensors

Product family WF

The specialist for high-speed applications

  • Infrared light source
  • Simple and precise setting of the switching threshold via IO-Link, teach-in button, or plus/minus buttons
  • Fast response time: 100 μs
  • PNP and NPN switching output
  • Light/dark switching function
  • Stable aluminum housing with IP 65 enclosure rating
  • Smart sensor with integrated IO-Link interface

UF Fork sensors

Product family UF

The clear choice for detecting transparent labels

  • Detection of transparent, opaque or printed labels
  • Unaffected by metallic foils and labels
  • Fast response time of 250 µs
  • Simple and accurate adjustment via teach-in button, or plus/minus buttons
  • Rugged, IP 65 aluminum housing

WFS Fork sensors

Product family WFS

Precise detection for optimum label detection

  • Housing with slim forked shape
  • Simple and precise setting of the switching threshold via IO-Link, teach-in button, or plus/minus buttons
  • Light/dark switching function
  • Fast response time: 50 μs
  • PNP or NPN switching output
  • Plastic housing with IP 65 enclosure rating
  • Smart sensor with integrated IO-Link interface

WFM Fork sensors

Product family WFM

Plug-and-play fork sensors – connect and get started.

  • Clearly visible red emitted light
  • No setup required: The sensor is ready for operation immediately
  • Receive indicator, visible all-round
  • 5 fork sizes with a maximum depth of 120 mm and a maximum width of 180 mm
  • Stable aluminum housing with IP 67 enclosure rating

WFL Fork sensors

Product family WFL

The perfect sensor for the detection of very small parts and precise positioning

  • Very precise Class 1 laser
  • Simple and precise setting of the switching threshold via IO-Link, teach-in button, or plus/minus buttons
  • Fast response time: 100 μs
  • PNP and NPN switching output
  • Light/dark switching function
  • Stable aluminum housing with IP 65 enclosure rating
  • Smart sensor with integrated IO-Link interface

SICK Register sensors


Register sensors

Register control does the work in tough print mark applications

The register sensor line complements our wide range of contrast sensors. As specialists in the register control of printing presses they offer an optimal solution to detect marks in tough print conditions with extremely low contrast, complex colorful printouts or at very high speeds. Our range of register sensors also includes an ATEX certified fiber-optic product, ensuring safe solutions in hazardous areas (e.g. when using solvent based ink).

RS10 Register sensors

Product family RS10

Adjustable individual thresholds

  • The register is controlled with individual thresholds
  • Unique housing: one screw mounting
  • Tight dual-sensor mounting ability
  • Detects 1-18 marks of different colors
  • Easy teach-in via button

SICK Array sensors


Array sensors

Line-for-line further ahead – array sensors

Array sensors operate on the proximity scanning principle. They detect even the smallest edges based on differences in grayscale values within the field-of-view. Positioning of, for example, a paper web based on the web edge or a contrast line is only one of many possible applications. Widths, diameters, and gaps can also be detected. In reflector mode, the array sensors can even detect transparent materials.

AS30 Array sensors

Product family AS30

More flexibility and efficient communication

  • Teach-in of selected edges possible
  • Full color TFT display
  • Various operating modes for different applications
  • Core and Prime variant for different fields of application
  • Large measuring range of up to 50 mm
  • Sensing distance of 25 mm or 100 mm
  • Repeatability of up to 30 µm

Ax20 Array sensors

Product family Ax20

Ax20 array sensors for edge and diameter detection solutions

  • Proximity contrast line sensor in a compact housing
  • Application-specific sensor functions
  • Detect position of edge of material
  • Diameter, width and gap detection of different objects
  • Very high reproducibility of 0.03 mm
  • Large measurement range: 30 mm
  • Visible white LED light spot to enable accurate alignment
  • Simple setup, no teach-in necessary

SICK Pattern sensors


Pattern sensors

From pattern detection to rapid position identification

The pattern sensor is a proximity-scanning opto-electronic sensor. Distinctive patterns in an image are used as a reference for the subsequent, accurate detection and positioning of objects. A stable switching signal is generated at high speeds with an intelligent algorithm for signal processing regardless of reference marks. It is typically used in the packaging industry.

PSS Pattern sensors

Product family PSS

Print Detector: The easy way to verify the quality of printed images

  • Simple sensor-based pattern recognition
  • Print pattern and background teach-in
  • Flexibly adjustable sensitivity levels
  • Response time: 10 ms
  • Trigger required
  • Print pattern quality shown on sensor display
  • Configuration via IO-Link

PS30 Pattern sensors

Product family PS30

From pattern detection to rapid position identification

  • Rugged housing with rotatable male connector
  • Scanning speed up to 10 m/s
  • Reproducibility of up to 0.1 mm (2 Sigma)
  • Ethernet interface for integration into the machine controller
  • Integrated, visible object illumination
  • Operating elements with cleartext display
  • Software tools for visualized configuration and diagnosis of the sensor
  • Automatic configuration when changing objects