Contrast sensors
For precision in every marking.
Contrast sensors detect and compare the smallest contrasts on objects using white light, laser red light, or RGB light sources. By automatically selecting the correct transmitter colors, different color or grayscale combinations can be reliably detected. At SCHMACHTL, we offer a wide range of contrast sensors for packaging processes or print mark detection - from compact models like the KRT 3C to very robust variants like the KRT 55, and even the ultra-fast KRT 20 with a response time of just 10 µs. Take the first step towards a smarter future now - together with us at SCHMACHTL!
KRT 3C: Mini contrast sensor for the packaging industry.
The solution for film, bag, blister packaging as well as labels: The compact contrast sensor of the 3C series is flexible for all common color and grayscale combinations with different transmitter colors (RGB light, white light or laser red light). It reliably detects even small contrast differences and positions accurately, and detects print marks even on glossy materials.
Your Benefits:
- Highly precise and reliable contrast detection with a short response time of 50 µs (laser: 125 µs) and minimal signal jitter for optimal machine throughput.
- High mounting flexibility and easy integration even in tight installation situations due to compact and robust housing with high protection rating IP67 and IP69K as well as ECOLAB certification.
- Multiple teach modes for easy and quick machine commissioning (static or dynamic 2-point teach, static 1-point teach).
- IO-Link for easy integration of additional functions into the machine control system.
SCHMACHTL Services.
Our SCHMACHTL "S" stands for the solution path that we define together with you and walk in a partnership collaboration with you. We support you with the following services:
Technical Consulting & Planning
Our experts are available to assist you online, by phone, or in person to find the best solution for you.
Product Demo On-Site
Convince yourself - We offer you live demos on-site and the opportunity to test our products for a period of time.
Engineering
Our technicians develop individual solutions for you - from CAD design to sophisticated concepts.
Installation & Commissioning
Our experts ensure a professional installation and smooth commissioning of your systems.
Training and Workshops
To ensure you can start optimally, we offer training sessions ranging from basic to expert levels, tailored to your needs.
Custom Packaging
We tailor our product packaging individually to meet your requirements.
Storage Stock
Through our storage stock, we ensure a safe and fast supply of your products.
Custom Packaging and Delivery
We offer customized packaging and delivery solutions tailored to your specific needs.
Technical Support
Our after-sales team is available at all times to assist you with technical questions and challenges.

Our SCHMACHTL Automation Team
works with enthusiasm for you.
We are happy to advise you!
With competence, enthusiasm, and advisory skills, we accompany you to success. Schedule your personal consultation appointment. We look forward to your inquiry!
Günther Kesler
Martin Scheuchenpflug
Mario Steinbichler
Contact us now via the form.
We
deliver
value.
Comprehensive services - from technical consulting to maintenance - ensure you optimal support in every project phase. Here you can find our SCHMACHTL services.
Our many years of experience and solid expertise guarantee you competent advice and tailor-made solutions.
We offer you a diverse selection of products and solutions for your individual needs.
With our regional presence, we are always close to you and quickly available for you.
We develop custom special solutions tailored perfectly to your requirements.
At SCHMACHTL, we hold our suppliers to the same high quality standards as we hold ourselves.