Hydraulic steel structures
Hydraulic steel structures

Precise control for a functioning infrastructure

With hydraulics, new waterways are made accessiblein the hydraulic steelwork, tides and water level differences are controlled by locks and gates and road networks are expanded with tunnels and bridges. Our position measurement systems and sensors are the perfect solution for controlling machines and plants. They provide long-term stability because they are highly precise and especially durable.

Application examples

  • Detecting rake cleaner end positions

    Smooth operation of hydroelectric power plants

    The solution

    Floating debris at the infeed end of hydroelectric power plants impairs the performance and thus the efficiency of the plant. The worst-case scenario could result in plant downtimes with high costs. Our BHS pressure-rated inductive sensors easily and reliably detect the rake cleaner end positions and therefore act as a safety and protection system for hydropower plants.

    The features

    • High pressure rating
    • Easy to install
    • For all cylinder types from M5 to M18
    Detecting rake cleaner end positions in hydropower plants
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  • Controlling the gates

    Reliable and precise control on dams

    The solution

    The requirements for a dam go much further than just opening and closing the gate. Fish ladders must be taken into account and the fully automatic control of the water level must be ensured. Our BSI inclination sensors reliably and precisely measure the intermediate position of the gate. The sensors with metal housing and a wide temperature tolerance range are specifically designed for use outdoors.

    The features

    • Absolute angle tracing for exact positioning
    • Wide temperature range for outdoor use
    • Ideal for rough environments: Metal housing and high degree of protection
    Reliable and precise control on dams
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  • Opening and closing locks

    Reliable and precise control of the locks

    The solution

    Our BTL ProCompact HB magnetostrictive linear position sensors ensure - when used in hydraulic cylinders - that water level differences at locks are overcome efficiently and reliably and continuously monitor the position of the gates. They are distinguished by the contact-free operating principle and their durability.

    The features

    • Stainless steel for use in coastal areas
    • With a cable guard system, can also be temporarily used under water
    • nearly limitless service life through an effective contact-free principle
    Reliable and precise control of locks
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  • Lifting and lowering bridges

    Efficient control of movable bridges to keep traffic flowing

    The solution

    Every second counts when raising and lowering movable bridges, as impact on traffic must be kept to a minimum. Our high-precision BTL magnetostrictive linear position sensors, which are integrated in the hydraulic cylinders, ensure that the bridge raises and lowers quickly. Our pressure-rated inductive sensors reliably detect the end positions of the cylinder and position the bridge element with precision.

    The features

    • Position detection and speed measurement
    • High-pressure resistant rated to 500 bar
    • Cost-effective solution for monitoring end positions
    Lifting and lowering movable bridges
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  • Positioning bridges weighing multiple tons

    Exact positioning with heavy-duty cylinders

    The solution

    When building bridges, special heavy-duty cylinders carry out horizontal feed and vertical lifting motions to move the bridge elements, which weigh several tons. The synchronous positioning with millimeter precision of bridge elements weighing several tons is undertaken by our BTL rod CD magnetostrictive linear position sensor, which is installed in the pressure range of heavy-duty and high-pressure cylinders.

    The features

    • For pressures up to 1000 bar
    • Resolution down to 1 µm for synchronous positioning with millimeter precision
    • Ex area zone 2; non-incendive "nA"
    Positioning bridges weighing multiple tons
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