Product description

Strain sensors are widely used in many measurement applications, whether static or dynamic. A strain gauge is sometimes referred to as an electrical resistance strain gauge, or simply a resistance strain gauge.

They are also used in measurement applications that can be considered dynamic, where the output fluctuates significantly due to deformation of the tested mechanical object. They are commonly used for components subjected to stress and torsion.

“Strain” is defined as the ratio of the change in an object’s length to its original length. A strain gauge can measure this change caused by an external force and converts it into an electrical signal that can later be digitized, displayed, logged, and analyzed.  

Technical specifications

120 Ω 3AA Quarter-Bridge Strain Gauge — Technical Specifications:

• Nominal resistance: 120 Ω
• Deviation from mean value: ± 0.2 Ω
• Applicable temperature range: -30 to 80 °C
• Gauge factor (GF) and tolerance: 2.0 ± 1%
• Thermal output:
  • Thermal output coefficient: < 2 µm/m/°C
  • Average thermal output distribution: < 30 ± µm/m
• Base width: 3.4 mm
• Base length: 6.6 mm
• Grid length: 3.0 mm
• Grid width: 2.44 mm