Measuring angles and inclination

Absolute rotary encoder enables precise electric valve control

The solution

Balluff's Nonius 2-track absolute encoder disc technology, when combined with a high-quality sensing chip, delivers unparalleled accuracy for rotary valve position feedback. The system allows indexing of the rotating mechanism to a precise angular location, within < ±0.2° absolute error per rotation.

Unlike resistive potentiometer solutions, magnetic encoders are non-contact and wear-free for long service life. Other advantages of magnetic encoders for valve position feedback include immunity from contamination by dirt, dusts, and liquids, and higher tolerance of shock and vibration.

The features

• Compact 30 mm outer diameter
• Off-axis sensor location minimizes effects of shaft runout and enables media to flow through the center in some applications
• 32/31 2-track Nonius system
• Pole pitch: 1.28 mm (master track), 0.96 (Nonius / vernier track)
• Compatible with popular reader chips such as iC-MU (iC-Haus)
• Aluminum carrier with rubber ferrite magnetic material
• Temperature range - 40° C to +85° C

High-accuracy position with direct axis feedback

The solution

Balluff's magnetically-coded angle measurement system integrated into the direct-drive torque motor makes it possible to precisely position the tool pivoting system. Electrical power, coolant lines, and data cables can pass through the large hollow shaft inside the encoder ring, where they are better protected and subjected to reduced stress from rotational twisting.

The features

• Compact sensor head fits into small recess
• Ideal for hollow shafts applications thanks to large inside diameter
• Simple installation and high encoder confidence thanks to generous gap tolerance between sensor and ring

Precise alignment of artificial lifts over the borehole

The solution

Hydraulic artificial lifts need to be placed precisely over the borehole so that side loads and component wear are minimized as much as possible. Balluff's inclination sensors offer non-contact angle measurement for precise vertical alignment in multiple axes. The sensors operate by measuring the deviation from horizontal, up to 360° (one complete rotation).

The features

• Mounts directly on the equipment to be aligned
• Space-saving and robust, well-suited to outdoor conditions
• Fluid-based and MEMS technologies available to suit moderate to high accuracy requirements

Precisely determine the position of patient examination tables

The solution

Examination tables are used to support patients in the proper position during medical examinations. In some instances examination tables need to be in particular positions to aid the transfer of people with mobility disabilities from wheel chairs. Balluff's inclination sensors enable precise positioning of the table to the most comfortable and preferred position.

The features

• Compact design
• Easily integrated
• High accuracy and high resolution

Precise monitoring of tilting motions

The solution

Balluff inclination sensors reliably monitor the tilt movements of the conveyor belt. This allows the belt to be accurately guided when it is moved for the subsequent work steps. The inclination sensors guarantee a high accuracy of 0.1° and very low temperature drift.

The features

• Precise position monitoring
• Extended temperature range –40 to 85 °C

Precise alignment of artificial lifts over the borehole

The solution

Hydraulic artificial lifts need to be placed precisely over the borehole so that side loads and component wear are minimized as much as possible. Balluff's inclination sensors offer non-contact angle measurement for precise vertical alignment in multiple axes. The sensors operate by measuring the deviation from horizontal, up to 360° (one complete rotation).

The features

• Mounts directly on the equipment to be aligned
• Space-saving and robust, well-suited to outdoor conditions
• Fluid-based and MEMS technologies available to suit moderate to high accuracy requirements

High efficiency through precision tracking and focusing

The solution

To achieve the highest possible level of efficiency in parabolic trough power plants, all troughs must be continuously adjusted to follow the sun's path across the sky. At the same time, the receiver tubes must also be located at the focal point. Practical, reliable sun tracking requires position sensors built to withstand the extreme environmental conditions found in most desert installations, where wide temperature swings can occur throughout the day and night and with the change of seasons. Balluff's magnetic tape and ring encoders deliver the right combination of accuracy, price, and environmental rugged to get the job done.

The features

• Direct position measurement at the moving member (more accurate and reliable than remote measurement at the motor)
• Available in a range of accuracy classes to deliver the required performance within the project budget
• Stable index signal provides a repeatable daily starting reference to obtain stable, low-drift tracking performance over time

Position measurement of water level and flood control gates

The solution

To implement remote, automated control of water levels at dams means that the position of water level and flood control gates must be measured electronically. Balluff's inclination / angle sensors can be mounted direction to the moving portion of the gate itself.

The features

• Detects the change in angle with respect to the horizontal
• High accuracy over a measurement range up to 360° (one rotation)
• Compact, robust metal housing enables simple installation
• Suitable for outdoor installation

Angle sensors report excessive tower deflection during high wind conditions

The solution

Strong gusts of wind and sustained high winds during storms can exert strong forces on the tower of a wind turbine. Balluff's inclination sensors offer non-contact angle measurement to indicate the deflection from vertical and the corresponding amount of stress on the tower structure.

The features

• Detects the change in angle with respect to the horizontal
• High accuracy over a measurement range up to 360° (one rotation)
• Compact, robust metal housing enables simple installation
• Absolute measuring signal: correct position reported upon power up

Slab transport on the walking beam

The solution

Precise location monitoring and continuous guiding of rotary movements are critical when transporting slabs. BSI inclination sensors are an outstanding solution to this challenge. On the walking beam they measure the deviation from the horizontal line on an axis by up to 360° – non-contact and with the highest precision.

The features

• Space-saving and rugged for use at –40...85 °C)
• No mechanical coupling needed in contrast to rotary encoders