SFA Series for Axial Stress Straingauge

Intended to measure the stress in an optional direction of the specimen in plane stress field

About the SFA Series for Axial Stress Straingauge

SF series stress gauge
These gauges are intended to measure the stress in an optional direction of the specimen in plane stress field. The gauges are sensitive not only in these axial direction but also in the transverse direction, and the sensitivity ratio of the transverse direction to the axial directions is equal to the Poisson’s ratio of the specimen material. In addition, the gauges are not sensitive to the shearing strain. Accordingly, the output of the gauges is proportional to the stress in the axial direction. The gauges are available in three types depending on the Poisson’s ratio of the specimen material.

Features SFA Series

  • Gauge resistance: 120Ω
  • Gauge size: 4mm
  • Poisson's ratio of specimen: 0.285, 0.305, 0.330

Temperature compensation materials

  • 11: Mild steel
  • 17: Stainless steel
  • 23: Aluminium

Specifications

Applicable specimen
Metal
Operational temperature(°C)
-20~+200°C
Temperature compensation range(°C)
+10~+100°C
Bonding adhesive
CN, NP-50B, C-1
Backing
Polyimide
Element
Cu-Ni
Strain limit
-
Fatigue life at room temperature
1×10⁶ (±1500×10⁻⁶ strain)
  • Follow us: