Siemens Load Cells
Siemens load cells of the WL series use strain-gauge technology to convert mechanical loads — ranging from small forces to heavy industrial loads — into proportional electrical signals. With various designs such as bending-beam, shear-beam, S-type, compression and ring-torsion cells, they support a wide range of applications including platform, hopper, silo, vehicle and belt scales as well as dosing, filling and checkweighing systems. Their robust construction and wide selection of rated loads make them suitable for demanding industrial environments.
FAQ
What is a load cell?
A load cell is a force transducer that measures an applied mechanical load and converts it into an electrical signal using strain gauges. It is the primary measuring element of a scale.
Which Siemens load cell designs are available?
Main designs include bending-beam, shear-beam, platform, S-type, compression and ring-torsion load cells, each optimized for specific load ranges and installation conditions.
What load ranges does the WL series cover?
The WL models cover ranges from a few kilograms up to several hundred tons, depending on the design and intended application.
How does a load cell work?
A spring element deforms slightly under load, causing the attached strain gauges to change resistance. This resistance change is evaluated as a voltage output proportional to the applied force.
How are load cells electrically connected?
Connection is typically made through four- or six-wire cables. Additional sense lines can be used to compensate cable influences and improve measurement accuracy.
Why should load cell cables not be shortened or extended?
Changing cable lengths can alter the total resistance and distort measurement results. This is especially problematic in precision and legal-for-trade applications.
Which applications are Siemens load cells suitable for?
They are suitable for static and dynamic weighing tasks such as platform scales, silo scales, dosing systems, vehicle scales, belt scales and checkweighers.
How do load cells respond to temperature changes?
Load cells include temperature-compensated components, but small drifts may still occur. Operating conditions must stay within specified limits.
What must be considered during installation?
Proper mounting without mechanical stress, cable protection, correct load introduction and attention to alignment are essential. Multi-cell systems require uniform loading.
Can load cells be used in hazardous areas?
Several models are available with approvals for use in explosive atmospheres, provided that installation follows the respective protection guidelines.
How do multiple load cells influence a weighing system?
In multi-cell systems the load is distributed across all sensors. The weighing electronics evaluates the combined signal, requiring proper load distribution and corner adjustment.
What accuracy classes exist?
Load cells are available in different accuracy classes, defining parameters such as repeatability, linearity, temperature behavior and minimum load.
What is the purpose of corner adjustment?
Corner adjustment ensures that a platform scale provides consistent weight readings at all load points, which is crucial in multi-cell configurations.
What protection ratings are available?
Many Siemens load cells offer high protection against dust and moisture, enabling reliable operation in harsh industrial environments.
What is the typical service life of a load cell?
Service life depends on mechanical load cycles, environmental conditions and installation quality. With proper usage, long operational lifetimes are common.