First of all, two types of product are distinguished: load cells and dynamometers.
The former are designed for the weighing sector, while the latter are used to measure force and mainly used in calibration.
Based on this separation they are subject to different regulations.
The operation of both load cells and dynamometers belongs to a single concept:
the force applied on the device determines voltages on the structure proportional to the stress itself which are transformed into an electrical signal through the use of strain gauges.
Read below the features and differences that distinguish the various models.