Sensors and Sensing Systems

GFA-01 GFRP fiber array sensor

Type: GFRP fiber array sensor

Application: Concrete or grout embeddable, surface mountable

Installation method: Glue

Pre-strain setup: At installation

Temperature compensation: Through external temperature sensor

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Characteristics
  • GFA-01 is a fiber array with configurable number of FBG elements and their spacing over the fiber length. The outer layer is Glass Fiber Reinforced Polymer (GFRP) coat which protects the FBG sensors and ruggedizes the construction.
  • GFA-01 is typically used for direct embedding or gluing to the measured surface to capture strain changes of the monitored structure.

Customization options:

  • Number of FBG elements.
  • Length spacing of FBG elements.
  • Spectral characteristic of FBG’s.
  • Connectors, protection tubing.
Applications
  • Strain changes detection.
  • Vibration monitoring.
  • Material deformation monitoring.

3D View
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Controls

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  • Rotate with the left mouse button.
  • Zoom with the scroll button.
  • Adjust camera position with the right mouse button.
  • Double-click to enter the fullscreen mode.
  • On mobile devices swipe to rotate.
  • On mobile devices pinch two fingers together or apart to adjust zoom.
  • On mobile devices 3 finger horizontal swipe performs panning.

Product Specification

Performance properties
Strain range
 
±2500μɛ
 
Accuracy (guaranteed)
<0.5% FS
 
Accuracy (typical)
<0.23% FS
 
Precision (guaranteed)
<0.25% FS
 
Precision (typical)
<0.15% FS
 
Temperature compensation External
Operating Temperature range -20°C to +60°C
Strain sensitivity 1,2pm/με
Temperature sensitivity 17pm/°C
Ingress Protection rating N/A
Grating properties FBG wavelength range Standard: 1510 – 1590nm
Optional: 1460 – 1620nm
Nominal (central) wavelength tolerance ±1000pm
Reflectivity >70%
FWHM between (3dB bandwidth) <400pm
SLSR (side lobe suppression) >10dB
PDFS (polarization-dependent WL shift) <5pm
FBG length ~5mm
Minimum Bend Radius 100mm
Fiber coating HT Acrylate, color blue (Strip & Recoat)
Physical properties Active FBG element length1) ~5mm
Connector type2) FC/APC
Installation method The embedding or direct surface gluing
Packaging Cardboard box with dimensions: 370x290x45mm
Quality Statement All sensors are 100% tested and calibrated at SYLEX. Sensor is manufactured according to ISO 9001:2008 and ISO 14001:2004 Sensor is compliant with IEC 61757-1-1:2020 and IEC 61757:2018.

Notes:

  • 1) Depends on the selected spectral shape
  • 2) Other connector types available on request

Related products

LCP-03 is an optional product modification for extending sensors cable lengths.

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