Absolute magnetic scales for industrial precision: Compact. Reliable. Engineered for demanding automation

Precise and reliable position feedback is the foundation of efficiency and quality in modern industrial automation. BOGEN’s absolute magnetic measurement solutions offer high-resolution, non-contact position detection with robust performance in harsh environments, where optical systems often reach their limits.

At the heart of our technology are two proven principles: PRC (Pseudo-Random Code) magnetic patterns and the Nonius method. These allow for flexible, compact absolute positioning systems with exceptional repeatability, even in applications exposed to dust, oil, vibration, and extreme temperatures.

 

PRC – Smart Precision on Two Tracks

BOGEN’s PRC-based magnetic scales encode absolute position data directly into the magnetic pattern on the scale. This allows a two-track configuration to deliver true absolute positioning, even from power-on, without the need for reference runs.

Because PRC patterns don’t rely on optical contrast or clean surfaces, they are ideal for compact, enclosed environments in automation systems, particularly where maintenance access is limited or frequent cleaning is impractical.

Benefits of PRC-based systems:

   - Absolute position data from the moment of power-up

   - Space-saving two-track layout

   - High signal integrity in industrial environments

   - Cost-efficient alternative to optical encoders

 

Nonius – Enhanced Resolution through Smart Signal Evaluation

The Nonius principle takes advantage of the phase difference between two or more tracks with slightly different magnetic pitches. Through clever signal processing, this method achieves significantly higher resolution and accuracy without increasing the physical size of the scale.

BOGEN’s Nonius-based scales can be implemented with two or three tracks, depending on the precision requirements. They are particularly suited for applications needing sub-micron resolution, such as semiconductor positioning, robotics, automated inspection systems, and high-end CNC machines.

Advantages of Nonius-based scales:

   - Higher resolution without increasing scale size

   - Available in 2-track or 3-track configurations

   - Excellent signal-to-noise performance

   - High immunity to environmental influences

 

Magnetic vs. Optical measurement: Why magnetic wins in harsh conditions

Optical encoders require clean, controlled environments to function reliably. Any contamination - dust, oil mist, condensation - can lead to signal loss or errors.

BOGEN’s magnetic measurement solutions excel where optical systems fall short:

   - Non-contact operation ensures minimal wear

   - Magnetic resistance to dirt, oil, and vibration

   - Thermal stability across a wide temperature range

   - Lower total cost of ownership, with longer service intervals and easier integration

 

Sensor Integration for Complete Solutions

Our magnetic scales are perfectly matched with BOGEN’s high-performance sensors, such as the ALS21, ALS26, AKS16, and AKS17. These sensors are optimized to read PRC and Nonius patterns with extreme precision and speed, forming a plug-and-play solution for machine builders, system integrators, and OEMs.

 

Applications at a Glance

BOGEN’s absolute magnetic scale solutions are trusted across industries, including:

   - Robotics and cobots

   - Packaging machinery

   - Semiconductor manufacturing

   - Material handling systems

   - Medical automation

   - Precision axes and linear stages

 

Whether you need a compact encoder for a robotic joint or high-resolution feedback for a semiconductor axis, BOGEN’s magnetic scale technology offers the performance, robustness, and flexibility to meet your needs.