Measuring distance and position
Measuring distance and position

Our robust, highly accurate linear and rotary position measurement systems operate contact- and wear-free. They are extremely reliable, even in rough environments such as extreme temperatures, in salty air, in the presence of vibrations or shocks as well as in potentially explosive environments.

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Application examples

  • Controlling the slab guidance

    Precise positioning of slabs in rollers

    The solution

    Our BTL magnetostrictive linear position sensors in the hydraulic cylinder guide and position the slabs with precision. They check for the correct configuration of the lateral guides and accompany the slabs on their path through the rolling stand. In addition, the system safely compensates for the strong forces that occur during reshaping.

    The features

    • Rapid Replacement Module (RRM) for fast changes without interrupting the hydraulic circuit
    • Vibration and shock resistant
    Precise positioning of slabs in rollers
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  • Forming composite materials

    High repeatability in forming composite materials

    The solution

    In the production of components made of carbon fiber reinforced plastic (CFRP), uniform pressure on the carbon fibers woven into mats is of central importance for an optimum result. Our heat-resistant BTL magnetostrictive linear position sensors ensure uniform shaping of the plastic and guarantee consistent pressure with every press-fitting process. They even work with high precision and great repeat accuracy in high temperature ranges – for every shape.

    The features

    • High temperature range
    • High repeat accuracy
    • Also has multiple position encoders to monitor both sides of the press
    High repeatability in forming composite materials
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  • Positioning the drill string

    Certified protection against explosions

    The solution

    For fast and efficient drilling, pipehandlers take drill rods out of the magazine and position them directly over the borehole. Powerful hydraulics are needed in order to move the heavy rods. Our BTL magnetostrictive linear position sensors support the hydraulics and in doing so play a decisive role in promptly and correctly positioning the rods.

    The features

    • High temperature range
    • Robust and long-lasting
    Positioning drill rods in oil and gas extraction
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  • Explosion protection for control and shutoff valves

    Reliably protect your systems from explosion hazards

    The solution

    Control and shutoff valves are used in many areas of oil and gas extraction, in refineries and in petrochemical plants. Here, they not only need to be protected against harsh environmental conditions, but also against explosion hazards. Explosion protection has the highest priority in this environment. Balluff has the ideal solution for every application: Our certified BTL magnetostrictive linear position sensors have numerous international approvals and are extremely reliable.

    The features

    • High reliability
    • with IECex, ATEX, NEC 500/505 and many additional international approvals
    Energy, oil/gas extraction, explosion protection for control and shutoff valves
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  • Detecting robot position

    Detecting robot position

    The solution

    Are you using multiple load ports? Or multiple process chambers? Then use our high-precision magnetic encoder systems to reliably monitor the movement of your robot units. These non-contact distance measuring systems continuously monitor the robot position. And the magnetic tape can be trimmed to exactly the length you need. This means you can use the system for modules with varying numbers of load ports.

    The features

    • Non-contact, i.e. no abrasion or splitting
    • Flexible: Up to 48 m of magnetic tape can be trimmed to your requirements
    Detecting robot position
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  • Optimal position feedback for direct drives up to 48 m

    Optimal position feedback for direct drives up to 48 m

    The solution

    For position feedback with gearless linear direct drives you need absolute, high-accuracy multi-slide-capable linear measuring systems. The BML-G multi-slide-capable absolute system offers you the optimal feedback solution. By simultaneously measuring the position of multiple slides on one stator system, costs are reduced. The generous distance between sensor and magnetic tape simplifies installation and increases operating reliability.

    The features

    • No reference move needed for tapes up to 48 m: absolute measurement signal
    • Optimal uptime – reliable operation: diagnostic function
    Optimal position feedback for direct drives up to 48 m
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  • Linear direct drive for short strokes

    Linear direct drive for short strokes

    The solution

    Our magnetic encoder systems handle the high clock frequencies and accelerations of the especially maintenance-friendly linear drive for short strokes with no difficulty.
    Since there is no cable between the stationary part and the easy to move slide of the linear drive, no drag chain is needed. The magnetic tape can be installed on the lower part of the slide and the sensor head on the base plate. The sensor head now reads the current slide position absolutely and without contact. Its very precise measurement signal ensures high control quality.

    The features

    • Simple installation – fast commissioning
    • Space-saving: best ratio between stroke and form factor
    • Highly energy efficient: matched motor feedback design
    Linear direct drive for short strokes
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