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Siemens Double Shear Beam Load Cells

The Siemens double shear beam load cells (e.g. WL290 DB-S CA) are heavy-duty strain-gauge sensors designed for large platform, hopper, vehicle or silo scales. They feature two shear beams to allow symmetrical force application. This design ensures high load capacity and stability, low sensitivity to off-center or lateral forces, and reliable operation even under harsh industrial conditions (e.g. high protection class, corrosion-resistant steel).

FAQ

What is a double shear beam load cell?

A double shear beam load cell consists of two parallel shear beams forming a dual shear element, on which strain gauges are mounted. When a load is applied, the central area deforms slightly and the resulting shear strain is converted into an electrical signal proportional to the load.

How does a double shear beam cell differ from a single shear beam cell?

Unlike a single shear beam cell, a double shear beam cell distributes the load symmetrically across two shear paths. This increases load capacity and reduces sensitivity to off-center or lateral loads. Consequently, it offers higher robustness and precision under heavy loads.

For what applications is a double shear beam cell particularly suitable?

It is ideal for heavy platform or vehicle scales, silos, large hopper or container scales, weighbridges, industrial weighing systems with high rated loads — essentially wherever high stability and robustness are required.

What load capacities do double shear beam cells cover?

Depending on the model, rated loads range from a few tons to well over 100 tons — suitable for heavy-duty industrial weighing and large capacity scales.

How are double shear beam load cells constructed and mounted?

The cell consists of a specially machined spring body with two shear beams; installation is usually between a base and a load-bearing platform or container. The force is evenly distributed to both beams. Electrical connection is via shielded multi-core cables, and correct grounding and cable routing are important.

How do double shear beam cells perform under side or eccentric loads?

Thanks to the symmetrical shear-beam design, they are much less sensitive to side loads, eccentric or off-center loading compared to single-beam or single-point cells. Measurement remains stable and accurate even with asymmetrical loading.

How precise and stable are double shear beam cells?

With proper installation and calibration, they deliver very stable, repeatable and linear measurement results with high overload capacity, making them suitable for industrial applications requiring robustness and reliability.

Can multiple double shear beam cells be used together?

Yes — for very large platforms or containers it is common to employ several double shear beam cells in parallel. Their output signals can be summed to determine total weight or fill level, provided load distribution and installation are correct.

Under which environmental conditions can they be used?

Double shear beam cells made of high-grade steel with appropriate coatings are suitable for industrial conditions including dust, moisture and demanding environmental influences. However, mechanical stress, strong vibrations or rapid temperature changes must be considered when selecting the cell.

Are double shear beam cells suitable for trade-approved weighing?

Yes — many double shear beam cells are designed for legal-for-trade („eichfähige“) applications, assuming that the complete system (cells, mechanics, electronics) is properly dimensioned, calibrated and approved. For applications with frequent load changes or dynamic operation, careful calibration and maintenance are recommended.