KD25-50 Series 50 mm Laser Displacement Sensor with NPN/PNP Switch & Dual Output and High Repeatability 50μm

The KRONZ KD25-50 Series is a compact 50 mm CMOS laser displacement sensor engineered for high-precision non-contact measurement in short-range industrial automation. Designed to deliver stable sensing performance and reliable measurement accuracy, the series is ideal for applications requiring fast response, repeatable positioning, and dependable object detection.

The KD25-50 Series includes four models to accommodate different control requirements:

• KD25-50N – NPN Switch Output
• KD25-50N2 – NPN Dual Output
• KD25-50P – PNP Switch Output
• KD25-50P2 – PNP Dual Output

All models share the same optical performance and compact mechanical design while offering different electrical output configurations. Users can select NPN or PNP output types and choose between Switch Output for digital detection or Dual Output for applications requiring both digital switching and analog displacement measurement.

With a 50 mm measuring distance, the KD25-50 Series provides greater installation flexibility than ultra-short-range sensors while maintaining excellent measurement stability. It is particularly well suited for automated assembly equipment, electronics manufacturing, packaging machinery, precision inspection systems, and compact automation equipment where space is limited but measurement accuracy is critical.

Built with advanced CMOS laser technology and a durable industrial housing, the KD25-50 Series delivers reliable performance for continuous operation in demanding manufacturing environments.

• 50 mm nominal measuring distance
• High-performance CMOS laser technology
• Accurate non-contact displacement measurement
• Available with NPN or PNP output
• Switch Output and Dual Output configurations
• Fast response for dynamic production lines
• Excellent repeatability for precision positioning
• Compact industrial housing for easy installation
• Rugged construction with IP67 protection
• Stable operation in continuous industrial environments
• Easy integration into industrial automation equipment
• Designed for precision manufacturing and quality inspection

All four models provide identical measuring performance, optical characteristics, and mechanical dimensions. The difference lies only in the output configuration, allowing users to select the model that best matches their automation system and control requirements.

Applicable Models

• KD25-50N
• KD25-50N2

The NPN output models are designed for industrial automation systems requiring NPN switching signals. They provide reliable digital outputs for object detection, positioning, counting, and automated process control while maintaining high sensing accuracy.

Typical Applications

• Product detection
• Position confirmation
• Conveyor automation
• Counting systems
• Assembly verification
• Production line control

Applicable Models

• KD25-50P
• KD25-50P2

The PNP output models provide source-type switching signals while maintaining the same optical performance and measurement accuracy as the NPN versions. They are suitable for industrial equipment requiring PNP output architecture.

Typical Applications

• Automated assembly
• Industrial inspection
• Position detection
• Packaging machinery
• Manufacturing automation
• Quality control systems

Applicable Models

• KD25-50N
• KD25-50P

Switch Output models generate a reliable digital ON/OFF signal when the measured object reaches the preset switching point. They are ideal for standard automation tasks where continuous analog measurement is not required.

Recommended Applications

• Object presence detection
• Position triggering
• Product counting
• Sorting equipment
• Conveyor systems
• Assembly automation

Applicable Models

• KD25-50N2
• KD25-50P2

Dual Output models combine digital switching output with analog displacement output, enabling simultaneous object detection and continuous measurement. These models are recommended for applications requiring higher measurement precision and real-time monitoring.

Recommended Applications

• Distance measurement
• Height inspection
• Thickness measurement
• Precision positioning
• Automated quality inspection
• Continuous displacement monitoring

The KD25-50 Series is specifically developed for applications where short-range measurement, compact installation, and high repeatability are essential. Its 50 mm measuring distance provides an ideal balance between measurement accuracy and installation flexibility, making it suitable for equipment where space is limited but precise sensing is required.

By offering four output configurations, the series allows machine builders and automation engineers to select the most suitable solution without changing the sensor's mechanical dimensions. Whether the application requires reliable digital detection or continuous analog displacement measurement, the KD25-50 Series delivers stable performance and long-term reliability in industrial production environments.

The KRONZ KD25-50 Series is designed for short-range precision measurement where stable detection, compact installation, and high repeatability are required. With a 50 mm measuring distance, the series provides more installation flexibility than ultra-short-range sensors while maintaining excellent accuracy for non-contact measurement.

Its compact design and multiple output configurations make it suitable for automated production equipment, electronics manufacturing, packaging machinery, precision assembly, and quality inspection systems.

The KD25-50 Series is ideal for electronics manufacturing processes where accurate positioning and reliable object detection improve assembly efficiency and product quality.

Typical Applications

• PCB positioning
• Connector inspection
• Electronic module assembly
• Component presence detection
• Assembly verification
• Product positioning

The 50 mm measuring distance is well suited for packaging equipment that requires reliable object detection within compact installation spaces.

Typical Applications

• Carton positioning
• Label detection
• Bottle positioning
• Package height inspection
• Filling level verification
• Product sorting

The KD25-50 Series delivers stable measurement performance for automated assembly equipment requiring accurate positioning of small and medium-sized components.

Typical Applications

• Assembly positioning
• Fixture alignment
• Product verification
• Component detection
• Position confirmation
• Assembly quality inspection

Designed for non-contact measurement, the KD25-50 Series improves inspection accuracy while reducing mechanical wear on production equipment.

Typical Applications

• Height measurement
• Thickness inspection
• Surface position detection
• Gap measurement
• Product dimension verification
• Quality inspection

The sensor provides reliable switching and measurement performance for conveyor-based automation.

Typical Applications

• Product counting
• Position detection
• Missing product inspection
• Conveyor synchronization
• Material handling
• Automatic sorting

The KD25-50 Series integrates easily into compact industrial automation equipment where stable laser measurement is required for continuous production.

Typical Applications

• Automatic assembly machines
• Inspection stations
• Production equipment
• Smart manufacturing cells
• OEM automation equipment
• Industrial machinery

The KD25-50 Series is widely used in:

• Electronics Manufacturing
• Consumer Electronics
• Precision Assembly
• Packaging Machinery
• Industrial Automation
• Factory Automation
• Automated Inspection
• OEM Equipment Manufacturing
• Intelligent Manufacturing
• Quality Control Systems

Selecting the correct model depends on the required output type and application.

• Only digital ON/OFF detection is required
• Product presence needs to be monitored
• Position triggering is sufficient
• Standard automation control is required

• Continuous displacement measurement is required
• Height or thickness needs to be monitored
• Analog feedback is required
• Precision positioning is required
• Real-time measurement data is needed

For optimum measurement performance:

• Install the sensor securely to minimize vibration.
• Keep the sensing surface clean and free from dust or oil.
• Maintain the recommended 50 mm measuring distance.
• Ensure the laser beam is correctly aligned with the target surface.
• Avoid direct exposure to strong ambient light whenever possible.

Proper installation helps maintain long-term measurement stability and repeatability.

Both models use the same optical system and measuring distance. The KD25-50N provides an NPN Switch Output for digital object detection, while the KD25-50N2 combines an NPN Switch Output with an analog output for continuous displacement measurement.

The KD25-50P provides a PNP Switch Output for digital detection. The KD25-50P2 adds an analog output, allowing both digital switching and continuous displacement measurement in one sensor.

The difference is the electrical output type. Both versions provide the same measurement performance, accuracy, and installation dimensions. Users should select the output type that matches the input requirements of their industrial control system.

A Switch Output model provides a digital ON/OFF signal when the target reaches a preset position. A Dual Output model combines digital switching with analog displacement output, making it suitable for applications requiring continuous measurement and monitoring.

The KD25-50 Series is widely used in electronics manufacturing, packaging machinery, precision assembly, automated inspection, factory automation, conveyor systems, and OEM industrial equipment.

A 50 mm measuring distance provides an excellent balance between compact installation and high measurement accuracy. It offers more mounting flexibility than ultra-short-range sensors while maintaining stable non-contact measurement for precision automation applications.

Explore other measuring ranges within the KRONZ KD25 Series to meet different application requirements.

Each series is optimized for a specific measuring distance while maintaining a consistent product platform, allowing equipment manufacturers to select the most suitable sensor without changing the overall system design.

Looking for a reliable 50 mm laser displacement sensor for your automation project?

The KRONZ KD25-50 Series offers high-precision non-contact measurement with NPN or PNP output options and Switch Output or Dual Output configurations to meet a wide range of industrial automation requirements.

Our engineering team can assist you with:

• Product selection
• Application consultation
• OEM & ODM solutions
• Technical support
• Pricing and quotations
• Global project assistance

Contact KRONZ today to discuss your application and find the right laser displacement sensor solution for your project.