Strain sensor 2000 - 6000 microstrain | EFO

The EFO is a fi ber optic strain sensor especially designed to be embedded in concrete, ideal for composite material engineering research and civilengineering applications such as monitoring stresses in structural members of buildings, bridges, tunnel linings and supports during and after construction. Smart structures are now possible thanks to FISO s EFO fi ber optic strain sensor. The deployment of sensors within the structure, whether it is a bridge or a dam, provides accurate information on changes in load and strains in reinforced concrete and mass concrete. Measuring strain in tunnel linings and supports is also possible with the EFO fi ber optic strain sensor. The EFO is a 70 mm long sensor designed to be embedded in concrete. The sensor is based on a unique fi ber optic strain sensor which constitutes a breakthrough in fi ber optic sensing. It consists of a stainless steel body, with two fl anges for better adherence to concrete. The intrinsic Fabry-Perot strain sensor is bonded in a very small diameter longitudinal hole located in the center of the steel body. Intrinsically safe, it is immune to EMI, RFI, and lightning. It allows static/dynamic measurement and can deliver signal transmitted over long distances with no interference due to fi ber bending.