Absolute Capacitive Rotary Encoder

An electric encoder is also referred to as a capacitive encoder. 

This product line consists of patented capacitive absolute encoders. These reliable and robust electric encoders are available as standard analog or digital models, as well as custom high-performance absolute encoders. They are suitable for a wide range of applications including aerospace, defense, harsh environments, industrial automation, medical technology, and automotive systems.

The encoder’s hollow shaft design meets the requirements for minimal space constraints while improving reliability by eliminating degradation and failure mechanisms. With their precise position feedback and advanced features, Electric Encoders are among the leading sensors for modern motion control applications — even in the most demanding environments.

Key features:

• Capacitive sensing principle

• Ultra-low axial profile

• Immune to magnetic and electromagnetic interference

• Available in rotary and linear configurations

• Sensor and processing electronics integrated on a single PCB

• Absolute angle or position measurement in one encoder

The VLX series of absolute encoders is designed for use in industrial automation and robotics, enabling high-precision motion control in an ultra-compact, low-profile form factor.

Thanks to contactless capacitive sensing technology, these encoders operate without wear and offer excellent long-term stability — making them ideal for high-performance systems. The hollow shaft and low-inertia design contribute to greater system efficiency, reduced weight, and improved dynamic response.

Ranging from the compact VLX 25 to the high-resolution VLX 247, the series covers a broad spectrum of space-saving yet powerful encoder solutions.

Encoders in the VLX series are easy to integrate and set new standards in precision, reliability, and efficiency for modern automation applications.

Unique Values

HIGH PRECISION	LOW PROFILE	HOLLOW SHAFT	HOLLOW SHAFT

The VLP series of absolute encoders offers extremely flat and lightweight designs for use in harsh environmental conditions. Based on contactless capacitive sensing technology, these encoders provide high-resolution, wear-free position feedback — ideal for aerospace, robotics, and industrial automation applications.

The hollow shaft and low-inertia design enhance system dynamics and reduce overall weight. From the compact VLP-25 to the high-precision VLP-247, the series covers a wide range of demanding motion control applications.

Encoders in the VLP series are designed for easy integration and combine reliability, precision, and durability — even in the most challenging environments.

Unique Values

HIGH PRECISION	LOW PROFILE	HOLLOW SHAFT	IMMUNITY TO MAGNETIC

The VLS series is currently the only space-proven COTS absolute encoder designed for high-precision motion control in aerospace applications — particularly for satellites and Low Earth Orbit (LEO) missions.

These encoders are based on contactless capacitive sensing technology, providing wear-free, long-term stable position feedback even under extreme environmental conditions. The hollow shaft and low-inertia design help reduce overall system weight and enhance dynamic performance.

From the compact VLS-25 to the high-resolution VLS-247, each model meets the rigorous requirements of modern space missions. The series is considered a benchmark for robust, space-qualified COTS absolute encoders.

Unique Values

HIGH PRECISION	EXTENDED TEMPERATURE RANGE	SPACE-PROVEN	MTBF: 15 YEARS

The VLT series of absolute encoders is designed for operation in extreme environmental conditions. It provides high-precision position feedback across an extended temperature range from –55 °C to +125 °C.

Based on contactless capacitive sensing technology, these encoders are wear-free and ideally suited for long-term use in demanding applications — such as aerospace, defense, robotics, and industrial automation.

The combination of a hollow shaft and low-inertia design enables easy integration, reduces overall system weight, and enhances dynamic performance. The encoders deliver stable, high-resolution absolute position values even in harsh conditions.

The VLT series is well-suited for use in safety-critical systems, such as automation or aerospace control components, and sets new standards in reliability and robustness.

Unique Values

HIGH PRECISION	LOW PROFILE	HOLLOW SHAFT	Immunity to Magnetic

VLZ – Setting New Standards in High-Precision Measurement Technology

The VLZ series redefines the benchmark for high-end encoders: it achieves a resolution of 1 milliradian — contactless and without the limitations of optical technologies.

These encoders operate reliably even in challenging environments where other systems reach their limits. With no optical components, yet featuring high sensitivity and excellent immunity to magnetic fields and electromagnetic interference (EMI), they offer exceptional robustness and long service life.

Installation is flexible: flush mounting is possible on either side. The VLZ series is also available in “bearing” configurations, making ultra-precise position measurement more accessible than ever before.

Unique Values

HIGH PRECISION	LOW PROFILE	HOLLOW SHAFT	IMMUNITY TO MAGNETIC

The DS series offers a field-proven solution for applications with the highest demands on precision and reliability. With a long track record in critical environments, the series has demonstrated outstanding robustness and accuracy.

Developed for use in aerospace, defense, robotics, and industrial automation, these encoders rely on contactless sensing technology to provide stable, long-term reliable position feedback.

Designed to operate in harsh environmental conditions, the DS encoders integrate seamlessly into complex motion control systems.

When operational safety and precision are non-negotiable, the DS series is a trusted and established choice.

Unique Values

SMALL SIZE	HIGH PRECISION	LOW PROFILE	HOLLOW SHAFT	IMMUNITY TO MAGNETIC

The VLM series is a true multiturn absolute encoder that delivers high-resolution position feedback across multiple revolutions — with outstanding accuracy and repeatability.

Based on contactless capacitive sensing technology, these encoders are wear-free and offer long-term stability, making them ideal for applications in aerospace, robotics, and advanced automation systems.

Thanks to their hollow shaft and low-inertia design, they can be integrated into space-constrained systems, reduce system inertia, and improve energy efficiency. The ultra-flat and lightweight form factor enables multiturn functionality without additional mechanical complexity.

The VLM series provides a compact solution for high-precision, multiturn position measurement and is ideal for systems with strict requirements regarding dynamics, space, and reliability.

Unique Values

HIGH PRECISION	LOW PROFILE	HOLLOW SHAFT	IMMUNITY TO MAGNETIC

Industry

Compact and precise position sensors are required for applications in automated manufacturing, assembly, inspection, and material handling. The VL and DS series are particularly well suited for use in dynamic, motion-intensive environments thanks to their contactless design, high resolution, and low profile.

Typical applications:

• Pick-and-place robots

• Autonomous mobile robots (AMRs)

• Axis control in handling and production systems

The encoders deliver absolute position values, operate virtually wear-free, and are resistant to dust and other environmental influences. Sizes starting from 13 mm outer diameter allow for integration even in space-constrained installations. Generous mechanical tolerances simplify mounting.

The encoders are ideal for use in factory automation, semiconductor production, and precision machinery.

Medical Technology

In surgical assistance systems and micro-surgical applications, precise and reliable position feedback is essential. VL and DS encoders are suitable for use in medical devices where even the smallest deviations must be avoided.

Typical applications:

• Robot-assisted surgical systems

• Micro instruments in surgery

• Image-guided navigation and positioning systems

The encoders operate contactlessly and wear-free, deliver interference-free absolute values, and feature a flat, integrable design. The product series meets ISO 13485 requirements and is designed for reliable operation in sensitive systems.

Aerospace & Space

Compact, lightweight, and radiation-resistant position sensors are required for satellite and space projects in Low Earth Orbit (LEO). The VLS series offers contactless absolute encoders that have already proven themselves in several space missions.

Key features:

• Flat design with hollow shaft

• Low weight, from approx. 13 mm outer diameter

• Radiation resistance (TID) and low outgassing according to space specifications

• Series availability as a COTS component

The encoders are suitable for:

• Attitude control in satellites

• Actuators in mechanisms requiring high positioning accuracy

• Systems with limited space and high reliability requirements

Harsh Environment

Robust, reliable position sensors are required for applications in extreme environmental conditions. VL and DS encoders are designed for use in environments with heavy vibrations, shock loads, temperature fluctuations, and electromagnetic interference.

Typical applications:

• Flight control, gimbal systems, radar stabilization

• Turret systems, unmanned ground vehicles, weapon platforms

• Naval applications, missile guidance, underwater technology

The encoders operate contactlessly and wear-free, deliver absolute values, and can be integrated in a space-saving manner due to their flat design. Available sizes from 13 mm outer diameter allow for adaptation to various mechanical requirements.

Energy

In wind and photovoltaic systems, precise position sensors are required to reliably track components such as rotor blades or solar panels. VL and DS encoders are suitable for use in outdoor environments with changing weather conditions.

Typical applications:

• Pitch control in wind turbines

• Azimuth and elevation tracking in solar tracking systems

• Yaw control and similar drive solutions

The encoders are available in various sizes from 13 mm to 247 mm. They operate contactlessly and wear-free, are resistant to dust, moisture, vibration, and temperature changes, and provide high-resolution absolute values.

Agriculture

Automated agricultural systems such as autonomous tractors, harvesting machines, or seeding technology require precise and robust position sensors. The contactless absolute encoders of the VL and DS series are particularly suitable for outdoor use thanks to their flat design, high resolution, and resistance to dust, vibrations, and weather influences.

With sizes starting from 13 mm, they offer reliable position feedback even in space-constrained applications — e.g. for steering, robotic arms, or navigation. The encoders are low-maintenance and designed for continuous operation in harsh conditions.