A load cell is a

A load cell is a

Right Answer is:

Strain gauge


  • A load cell is a transducer.
  • It is used to create an electrical signal whose magnitude is directly proportional to the force being measured.
  • Various types of load cells include hydraulic load cells, pneumatic load cells, and strain gauge load cells.

Strain Gauge Load Cell

  • Strain gauge based load cells have a sensing junction/element that when loaded responds to the load by producing an electrical output.
  • The circuitry to convert the response to a quantifiable electrical signal is a configuration known as the Wheatstone bridge.
  • Strain-gauge-based load cells are the most commonly used type.
  • Strain gauges are made up of a long, thin strip of conductive material arranged in a zigzag manner.
  • Load cells typically contain multiple strain gauges aligned and wired in a Wheatstone bridge circuit.
  • When stress is applied to a strain gauge, the resistance of the strain gauge changes and unbalances the Wheatstone bridge, resulting in a signal output (voltage) that is proportional to the stress.

  • The rated capacities of strain-gauge load cells range from 1 N to more than 50 MN, and they can be used with high-resolution digital indicators as force transfer standards.
  • The shape of the elastic element used in load cells depends on a number of factors, including the range of force to be measured, dimensional limits, final performance, and production costs.
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