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.
|−1000 to +1000 µε|
|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.