DATA SHEET FS62WSR Weldable Strain Rosette Aramid or Armor cable SPECIAL FEATURES S Spot welding installation Robust design Configurable wavelengths, cable lengths and connector types DESCRIPTION The Weldable Strain Rosette is a Fiber Bragg Grating (FBG) based sensor designed to be spot welded to metallic surfaces using a low power welding machine. It has three FBG at 0º/60º/120º on a weldable sub strate turning it into a robust and resistant solution for usage in demanding environments as seen in many field applications. The FS62WSR is based on the newLight® technology developed by HBK FiberSensing. newLight sensors employ high strength fiber coatings ensuring increased strain ranges, enhanced fatigue resistance and higher measurement accuracy. HBK FiberSensing offers inno vative sensor designs compatible with standard telecommunication fibers. This eases network design and significantly reduces installation time and cost, even when a large number of sensors are multiplexed on the same fiber, sometimes kilometers apart. The technology is completely passive fitting explosive envi ronments, self-referenced (providing measurement long term stability), and compatible with most inter rogators in the market. Combine this with other strain and temperature sen sors from HBK FiberSensing with aramid or armored cable, assembled from factory. Please contact HBK FiberSensing for support. BENEFITS AND APPLICATION Sensor design Fiber Bragg grating technology Bi-dimensional stress analysis with 0º/60º/120º rosette strain measurement No drift, absolute referenced measurements Easy installation by spot-welding with immediate measurements after installation Immune to electro-magnetic and radio frequency interferences Suited for measuring on curved surfaces Passive technology fitting applications in ex-plosive areas Validated resistance to shock Appropriate for usage on outdoor and offshore applications Reduced cable requirements with intrinsic multi plexing capability Long distances between sensors and the interroga tors attainable Combinable with other FBG sensor types on the same fiber and same interrogator Fitting applications like structural health monitoring of large structures like bridges, pipelines, ship hulls, monopiles

SPECIFICATIONS Sensor k-factor Sensitivity1) Resolution2) Measurement range3) Gauge length Operation and storage temperature Operation and storage humidity Sensor bend radius Substrate thickness Attachment method Stainless steel, epoxy and ormocer® Bragg wavelengths Fiber type Fiber cladding and coating diameter FWHM, reflectivity and side lobe suppression Typical. Considering an FBG with 1550 nm wavelength. For 0.5 pm resolution in wavelength measurement, as found in FS22SI interrogator. Maximum elongation per Fiber Bragg Grating. To ensure that signals from the same rosettes do not overlap...

Inputs/Outputs Cable type Ø 3 mm aramid (hytrel, Kevlar® and LSZH) or Ø 3 mm armor (hytrel, stainless steel spiral, Kevlar®, stainless steel mesh and LDPE) FC/APC, SC/APC or NC (No Connectors) Induced loss due to one complete turn around a mandrel lower than 0.05 dB. For cables longer than 2 m, a splice with polyimide protection is included at 2 m from the sensor protected with dielectric shrinking tube (Ø8x150 mm). Specified cable length is ensured on delivery. A margin of up to 10 cm can be present. Extension cables are delivered with acrylate coated fiber. For different cable lengths or splice...