Model FP4000

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Strain Gauges (Fiber Optic)

The Model FP4000 Fiber Optic Strain Gauges are designed for use in environments where it may be difficult to use conventional types of strain gauges because of space considerations, high levels of electrical interference or where intrinsic safety is an issue. Measurements of dynamic events are also possible with these gauges and the requisite dataloggers. The strain gauges have a very low coefficient of thermal expansion and can be used to measure both mechanical and thermo-mechanical strains in a variety of different materials.


Standard Ranges
FP4000-1.0 | −1000 to +1000 µε
FP4000-2.5 | −2500 to +2500 µε
FP4000-5.0 | −5000 to +5000 µε
FP4000-1.0 | 0.15 µε
FP4000-2.5 | 0.30 µε
FP4000-5.0 | 0.50 µε
Gauge Factor Accuracy¹
FP4000-1.0 | ±3% F.S.
FP4000-2.5 | ±3% F.S.
FP4000-5.0 | ±10% F.S.
Temperature Sensitivity: 0.85 to 1.22 µε/°C
Strain Sensitivity: transverse strain insensitive
Operating Range:−40°C to +80°C
L × W × H: 100 × 25 × 1 mm

¹The accuracy of the OSP sensors is determined by sample testing of controlled batches at the factory. The manufacturing technique results in the spans shown above and is confirmed by actual strain tests performed on samples from batch lots.