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MuST FBG Strain Sensor

LONG-GAUGE DEFORMATION SENSOR

ROBUST AND EASY TO INSTALL

For surface mounting or embedding in concrete and mortars.
Ideal for long-term structural deformation monitoring.
20 year track record in field applications.

Description

The MuST FBG deformation sensors are transducers that transform a static or dynamic distance variation into a change in reflected wavelength of a pre-stressed Fiber Bragg Grating that can be measured with SMARTEC Reading Units.

The sensor is composed of an active and a passive part. The active part contains the measurement fiber and measures the deformations between its two ends, transforming it into a wavelength shift of the Fiber Bragg Grating. The passive part is insensitive to deformations and is used to connect the sensor to the Reading Unit. In the passive part of the sensor, it is possible to install a loose Fiber Bragg Grating for temperature sensing and compensation.

The sensors are available in single-ended, double-ended and chained configuration. Using our Readout Units it’s possible to connect up to 7 full-range temperature compensated sensors on the same channel (or up to 4 with temperature compensation + 4 without). The sensors are terminated with E2000-APC connectors or on user‘s specifications.

The sensors can be quickly and easily installed without affecting the construction schedule. They can be directly embedded in concrete and mortars, or surface mounted.

Specifications
Longueur active (LA, base de mesure) FR V1:20 cm à 2 m
Longueur passive (câble de connexion):1 à 200 m (plus grande longueur sur demande)
Pré-tension de la longueur active de la fibre0.5% de la longueur active (ou autre sur demande)
Étendue de mesureDéformation: 0.5 % en compression, 0.75 % en élongation               
 Température: -40 °C à +80 °C
Résolution/ Précision des mesures:0.2 µε / 2 µε (avec unité de lecture SMARTEC)
Options de protection du câble connexion (voir fiche spécifique pour plus de détails):Câble standard : Gris (pour enfouissement ou installation en surface); Tube de protection inox:  Noir (pour les conditions difficiles); Câble seul sans protection: Jaune (utilisation laboratoire)
ConnecteursE-2000 AC (8°)
Température d’utilisation:Zone passive: -40 °C à +80 °C; Zone active standard: -50 °C à +110 °C; Zone active spéciale (sur demande): -50 °C à +170 °C
Étanchéité:5 bars (15 bars avec protection additionnelle aux ancrages)
Ordering Info
  • Length of active zone
  • Length of passive zone
  • Connecting cable type
  • FBG Wavelength
  • Temperature compensation (Yes/No)
  • Single/Double Ended
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