Baumer cable transducers simplify linear position measurement

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Precise linear position measurement can be challenging in OEM and retrofit applications, particularly where sensors need to operate reliably in demanding outdoor or industrial environments.

Baumer’s GCA and GCI series of cable transducers are designed to provide accurate linear measurement in a compact and robust package. The cable transducers combine straightforward installation with durable mechanical construction and long-life components, providing a low-maintenance solution for applications where reliable position measurement is essential.

The range covers different housing designs, sensing technologies and interfaces, allowing cable transducers to be configured for applications ranging from mobile machinery and utility vehicles to medical technology and logistics equipment.

Cable transducers for linear measurement

A key factor in the measurement performance and durability of Baumer’s cable transducers is the precisely guided winding of the steel measuring cable.

The controlled cable guidance is designed to provide consistent mechanical operation and accurate linear position measurement over the measuring range. Where angled or flexible cable travel is required, optional pulleys can also be used.

The cable is sheathed with polyamide, providing protection against corrosion while also supporting bending resistance during operation.

The interaction between the cable mechanics and encoder is another important aspect of the design. Baumer’s GCI/GCA flexible series can achieve linearity of up to ±0.01% of the measuring range, providing the accuracy required for demanding position measurement applications.

Compact GCA5 cable transducers for outdoor applications

For outdoor applications where installation space is limited, the GCA5 series provides a compact cable transducer solution.

The units feature compact plastic housings and protection ratings up to IP67, making them suitable for applications exposed to dust and moisture. Their small dimensions also make them suitable for space-constrained equipment such as mobile machines and utility vehicles.

The GCA series uses a three-chamber design to provide additional protection for the electronics and spring mechanism against moisture and other potentially harmful environmental influences.

Construction features include corrosion-resistant stainless-steel cable with a nylon-polyamide coating and a flat, lightweight and shock-resistant housing.

These features allow the compact cable transducers to be used in applications where equipment may be exposed to vibration, impacts and changing environmental conditions.

Multiple interfaces for position measurement

Integration into different control systems is supported by a range of standard interfaces.

The compact GCA series combines integrated sensing with interface options including analog, CANopen® and SAE J1939. This allows the cable transducers to be integrated into a variety of control architectures without requiring additional adjustment aids.

The encoder and cable mechanics are designed to operate together as an integrated measurement system, supporting reliable position detection while simplifying installation.

For OEMs, the availability of different interfaces can also help reduce the need to develop application-specific sensor arrangements when integrating linear position measurement into machinery.

Flexible GCI/GCA cable transducers

The GCI/GCA flexible series provides additional configuration options by allowing the cable transducer mechanics to be combined with either incremental or absolute encoders.

Different interface options are available to suit the requirements of the control system, while versions with redundant sensing and signal output can be specified for applications where additional measurement reliability is required.

This modular approach means the same basic cable-pull measurement principle can be adapted to different sensing and communication requirements.

High-accuracy cable transducers for demanding applications

Applications in areas such as medical technology and logistics can place particularly stringent requirements on linearity, positioning accuracy and service life.

For these applications, the GCI and GCA flexible series are available with metal housings and high-position-resolution encoder technology.

The series can achieve linearity of ±0.01% of the measuring range over measuring lengths of up to 50 metres, making the products suitable for indoor applications where accurate linear position measurement is required.

High measurement accuracy is supported by the combination of precision mechanical components, guided cable winding and optical encoder sensing.

The cable-pull mechanism can also be paired with either incremental or absolute encoders, providing flexibility when selecting the most appropriate sensing technology for a particular measurement task.

Cable transducers for OEM and retrofit applications

The combination of compact designs, multiple interfaces and different sensing technologies allows Baumer’s cable transducer range to address a wide variety of linear measurement requirements.

For OEM applications, the availability of standard interfaces and configurable sensing options can simplify integration into machine control systems. For retrofit projects, compact dimensions and flexible installation options can make cable transducers suitable where existing equipment has limited space for additional measurement hardware.

Across the GCA and GCI series, Baumer provides options for outdoor mobile equipment, industrial machinery and more demanding indoor applications where measurement accuracy and long service life are important considerations.

The result is a cable transducer portfolio designed to provide reliable linear displacement and position measurement across a range of industrial and specialist applications.

More at: Cable transducers | Baumer, Great Britain