A single point load cell is one of the major categories or types of load cell commonly found within the weighing industry. The defining characteristic of a single-point is its ability to accommodate off-centre loading. Typically, the load needs to be aligned with the cell to maintain accurate readings. If the weight moves off-axis, it introduces error. Single-points, due to their geometric design, allow for some flexibility, and can thus maintain accurate readings even if the weight is unevenly distributed.

This ability makes weight sensor perfect for use in platform scales where there can be some variability in load placement. Objects can be placed anywhere on the platform, and its weight will still be measured accurately. Practically this is of enormous value, as it removes the effects of human error in placement.

Working Principle

Single-points, like all other modern load cells, are essentially load cell sensor that convert force or weight into an electrical signal. They do this by using strain gauges, which are attached to the body of the load cell. When under load, the shape of the load cell deforms slightly. This change is detected by the strain gauges which distort in unison with the body, resulting in a change of voltage. This voltage signal is proportional to the initial force or weight and can thus be used to calculate it

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