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Rebar Strainmeters (Fiber Optic) | Model FP4911
Cảm biến đo biến dạng cốt thép sợi quang Geokon FP4911
The Model FP4911 Fiber Optic Rebar Strainmeter is designed for measuring strains in foundations, slurry walls, precast piles, caissons, bridge abutments, tunnel liners, etc. The standard Model FP4911 (#4 rebar), known as the “Sister Bar,” is installed alongside structural rebar. The Fibre Optic element employed in this sensor makes it particularly suitable where dynamic measurements are to be made and/or on projects where other fiber optic sensors are deployed.
Standard Range −1000 to +1000 µε
Resolution 0.15 µε
Accuracy ±0.25% F.S.
Nonlinearity <0.5% F.S.
Temperature Sensitivity 0.85 to 1.22 µε/°C
Temp. Operating Range¹ −40°C to +80°C
Rebar Size 4 (Sister Bar)
Active Gage Length 914 mm
¹Other ranges available on request.