Optical sensors and systems
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Optical
Fibre Extensometer
Deformation measurement in the field
of civil engineering
- Embeddable or surface
sensors
- High accuracy
- Temperature compensated
- Low invasive technique
- Uniform sensitivity
- No pre-tension nor calibration required
- Intrinsic immunity to electromagnetic fields
- Long-term reliability
- Possibility of curved measurements
The Nixus extensometer measures deformations.
It is designed to be embedded into
concrete or mounted on surface.
The sensor translates strain into a length variation of
the sensing zone of the optical fibre also called the
measurement basis.
The length of this basis can be chosen from a few tenth
of centimetres up to several metres, in order to observe
phenomena at the structure size.
Several sensing zones can be put in sequence along a single
fibre, enabling simultaneous strain measurements in several
areas.
The sensor can appear as a sheath fibre, for embedding
into the material during the fabrication (Nixus Sheath),
or as a tape for surface mounting (Nixus Tape).
The sensors are linked to the Nixus reading unit by a
fibre with a reinforced sheath, whose length can be whatever
which is needed.
Robust and accurate thanks to its fibre optic technology,
the Nixus extensometer is easy to install as no pre-tension
nor calibration are needed.
The flexibility enables curved shapes measurements. |
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