Contrast sensors
KTM Prime

Mini, easy, speedy, robust

Your Benefits

  • Small housing allows for installation even where space is limited
  • Powerful, fast contrast sensor ensures high machine availability
  • Three-color LED technology allows for a reliable process, with contrast marks detected even in conditions with weak contrast ratios or on glossy materials
  • Various teach-in methods enable more flexible commissioning
  • Long service life, even in harsh environments, thanks to stainless-steel housing; as a result, excellent plant availability and low spare parts costs
  • Enhanced diagnostics and visualization as well as quick and easy format changes via IO-Link


Mini, easy, speedy, robust

Top performance for universal, space-saving use in the packaging industry, even in adverse conditions: The new KTM Prime contrast sensor from SICK features high grayscale resolution and is integrated into a small, tried-and-tested housing that is also available in stainless steel. The optimized OES4 ASIC technology and a response time of 35 µs ensure reliable and accurate detection of contrast marks, even on glossy materials. The various teach-in methods ensure greater flexibility during commissioning. The integrated IO-Link interface can be used to access the parameter settings. A KTM Prime laser variant with a sensing distance of up to 250 mm is available for long-distance applications.

At a glance
  • High grayscale resolution
  • Very large dynamic range means reliable detection of contrasts on glossy materials
  • Static and dynamic teach-in in a single variant
  • Switching frequency: Up to 15 kHz
  • Sensing distance: 12.5 mm for RGB and white LED, up to 250 mm as laser variant
  • IO-Link interface


KTS and KTX - The next generation of contrast sensors

Click here for more information:

KTX Prime

KTS Prime

KTS Core

Reliable and accurate detection

Detects minor differences in contrast and glossy materials

In addition to differentiating between black and white, this sensor can also detect different shades. Its high resolution of 20 gray tones guarantees it can detect even the smallest differences in contrast. With the new ASIC in the sensor, print marks on a wide range of materials are reliably detected, including glossy materials such as strongly reflecting foils as well as low-contrast materials.
Even the smallest differences in contrast can be detected without a problem
Print marks are also reliably detected on glossy and reflective surfaces

The KTM Prime enables reliable and accurate detection and thereby ensures optimal machine throughput

High level of mounting flexibility

Compact, space-saving miniature housing

With a height of only 31.5 mm, the KTM Prime can also be mounted in tight spaces without a problem. The stable ABS housing and the rugged metal inserts with female thread allow for a high tightening torque for securely fixed screws.
All KTM Prime variants are at home in the space-saving miniature housing.
Metal inserts in the mounting holes allow for securely fixed screws.

The KTM Prime offers a high level of mounting flexibility and is therefore more convenient and user-friendly

Different variants

The ideal variant for any application.

The KTM Core contrast sensor offers high performance for standard applications at a low price. Manual adjustment via potentiometer is easy and convenient. The KTM Prime combines 3-color LED technology, convenient adjustments and an IO-Link interface for additional functions. The KTM Prime is also available in the stainless-steel housing and is therefore ideal for use in harsh environments. For applications with large sampling intervals, the laser variant of the contrast sensor offers a sensing distance of up to 250 mm.
Large sampling intervals, glossy or low-contrast objects - the KTM Prime reliably masters the challenges.

Harsh ambient conditions despite the KTM Prime in a stainless steel housing Rough ambient conditions despite the KTM Prime in a stainless steel housing

The different variants of the KTM Prime fulfill all application requirements.


Technical overview

  • Technical data overview

    Technical data overview

    Dimensions (W x H x D)

    12 mm x 31.5 mm x 21 mm

    15.25 mm x 48.6 mm x 22.2 mm

    Sensing distance

    12.5 mm

    11 mm

    50 mm

    250 mm

    Type of light

    LED, white 1)

    LED, RGB 1)

    Laser, red 1)

    Light spot size

    1.5 mm x 6.5 mm

    Ø 2 mm (12.5 mm)

    1.6 mm x 9.5 mm

    Ø 1.7 mm (50 mm)

    Ø 1.8 mm (250 mm)

    Switching frequency

    15 kHz 2)

    4 kHz 2)

    1.5 kHz 2)

    Response time

    32 µs 3)

    35 µs 3)

    0.125 ms 3)

    0.333 ms 3)

    Switching output




    2-point teach-in static/dynamic + proximity to mark

    ET: Teach-in dynamic

    ET: Teach-in dynamic: Q-signal switches during teach-in (up to 10 ms time delay for 1st mark)

    ET: Teach-in static + proximity to mark

    ET: Teach-in static

    Connection type

    Male connector M8, 4-pin

    Cable with M12 male connector, 4-pin
    0.2 m

    Cable with M8 male connector, 4-pin
    0.2 m

    Cable open end, 4-wire
    2 m

    Cable with M12 male connector, 4-pin
    0.3 m

    Communication interface



    • 1) Average service life: 100,000 h at TU = +25 °C.
    • 2) With light/dark ratio 1:1.
    • 3) Signal transit time with resistive load.
All technical data can be found accompanying the individual product