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L-Bracket sensor (strain sensor)

Constant structure behavior monitoring

This strain sensor is a fiber optic strain long gauge sensor specially designed for long term monitoring of structures. It uses the state of the art optical FBG technology, allowing continuous structural health monitoring. This helps to keep the critical infrastructure under constant supervision.

  • 100% passive sensor without the need for power supply
  • structure tension and compression monitoring at the same time
  • universal platform enabling the use of additional sensor types

100% passive sensor

Since the sensor does not need the power supply, it easily monitors places without access to the power and hazardous or inaccessible areas.

Tension and compression

The sensor is pre-strained by default enabling it to monitor tension and compression of any structure.

Universal platform

The strain sensor can also be used in combination with other sensors, such as temperature, inclination, vibration, displacement, etc.

Protected as IP68 rated devices

The protection is comparable to the international standard rating of IP68 and guarantees complete dust tightness and protection against the effects of long periods of immersion in water.


The sensor can be used alone or incorporated into a larger sensing network regardless of sensor interconnections.

Installation costs

Installation and cabling for optical sensor networks are much less expensive and cumbersome than comparable electronic gauge networks.

Immune to EMI/RFI

The sensor enables operation in harsh environments and in hazardous areas. The advantage is immunity to electromagnetic/radio frequency interference.

Leverage the existing fiber optic network

Standard telecommunication optical fibers, for example, dark fibers, can connect the unit and sensors. This is very economical even for a large number of monitored points.

Supplied with mounting accessories

The L-bracket strain sensor can be mounted directly on the surface of a structure, which enables the most accurate measurements of strain. It is supplied with two aluminum L-brackets and fasteners which facilitate the mounting on a structure. The strain difference is then directly  measured as a function of elongation or compression of fiber between two fixed points.

Optional accessories

The strain sensor can be supplied  with additional optional accessories like a sensor protective cover, customized mounting anchors, connectors, etc.

Have a look at the use of this product in real life projects

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