IMMUNE TO LIGHTNING / EMI /RFI
STATIC / DYNAMIC RESPONSE
When bonded to a specimen, the FOS Fiber optic strain gauge measures the expansion and contraction of material due to mechanical stress or thermal effect
ROCTEST’s FOS fiber-optic strain gauges are the best choice for high-performance strain measurements. The strain gauge measures the expansion and contraction of material due to mechanical stress or thermal effect.
The strain gauges are designed around a Fabry-Perot interferometer (FPI). When bonded to a specimen, the strain transferred to the gauge is converted into engineering units by the readout.
FOS strain gauges are insensitive to any pulling or manipulation of the incoming fiber. This feature is advantageous when the gauge is embedded in composite materials. Long-term reliability of the gauge length is guaranteed by the welding method that avoids any internal creep that may arise from the use of adhesives.
Non temperature-compensated fiber optic strain gauge
±1000, ±2500, ±5000
0.01% of F.S. (readout dependent)
<0.1% of F.S.
−40 to +250°C (cable and adhesive dependent / installation over 200°C susceptible to creeping)
Fiber optic cable
CFO-3STD or CFO-1HT
8.5 to 10 mm (depending on range)