Strain measurements

 

Measurement of strain can be used by different types of sensor. We can offer fiber optic sensors based on different construction: mountable, embeddable or direct-surface mount sensors. Many of strain sensors offer the availability of temperature compensation being built in one sensing fiber.

 

Anchor Strain Chain ASC-01

 

The fibre optic anchor strain chain ASC-01 contains different strain segments in series. The sensor configuration has a small diameter and is designed to become embedded inside structures (e.g. concrete, grout, plaster, …). Each strain segment contains 1 FBG in between two anchor points. A relative displacement between the two anchor points is transferred into a change in the strain state of the FBG. The standard length of a segment can be chosen between 0.5 and 5 meters. The sensor can be connectorised at both ends to make series configurations possible.

 

Embeddable Strain Sensor ES-01

 

The embeddable strain sensor ES-01 is a strain sensor that is intended to become embedded into concrete structures in order to measure the strain variations between its anchoring points. The fiber is fixed inside a ruggedized housing and has a connector at both ends in order to make series configurations possible.

 

Mountable Strain sensor MS-01

 

The mountable strain sensor measures the deformation between its anchoring points. The fibre optic sensor is fixed inside a ruggedized housing that is connected to the anchors using nuts. The anchors are bolted in concrete or welded to metal constructions. The nuts are also used to apply pre-tension on the sensor to monitor compression and elongation. The distance between both the anchoring points can be chosen between 70 and 100 mm. The sensor has fibre optic cables at both ends in order to make series configurations possible.

 

Strain Cable SC-01

 

The fibre optic Strain Cable SC-01 is a long base strain gage which can be mounted on a structure by means of two anchoring points. The standard gage length can be chosen between 1 and 5 meters. The sensor has a connector at both ends in order to make series configurations possible.

 

Strain Cable SC-01

 

The fiber optic Strain Cable SC-02 is a long base strain gage sensor that can measure displacements up to 5% of its gage length. The sensor can be mounted on a structure by means of two anchoring points. The standard gage length can be chosen between 0.5m and 1m meter. The sensor is connectorised at one end and can optionally be delivered with an integrated temperature sensor for temperature compensation.

 

Strain Cable SC-03

 

The strain sensor SC-03 is a strain sensor that is intended to measure the averaged strain on or in structures. The sensor can be mounted on the surface of the structure by means of mounting braces or it can be embedded into concrete during casting. The fiber is prestrained in its housing in order to measure also compression next to tension. Hence no special precautions with respect to pre-tensioning the fibre needs to be taken during installation. A temperature sensor can be optionally included for temperature compensation purposes. The sensor can be connected at both ends in order to make series configurations possible.

 

Strain Gage Chain SG-01

 

The Strain Gage SG-01 is the fiber optic equivalent of an electrical strain gage. The Strain Gage SG-01 can be mounted directly on the surface of a structure by means of an adhesive. In this way, the fiber sensor makes direct contact with the surface and therefore measures directly the strain at the surface. Installation of the optical Strain Gage happens preferably by means of the Sylex Strain Gage Installation Kit (SGK-01).

 

Strain Gage Chain SGC-01

 

The Strain Gage Chain SGC-01 is a spliceless chain of several fibre optic Strain Gages (SG-01) in series. These Strain Gages are the fibre optic equivalent of electrical strain gages. They can be mounted directly on the surface of a structure by means of an adhesive. In this way, the fibre sensor makes direct contact with the surface and therefore measures directly the strain at the surface. Installation of the optical Strain Gages happens preferably by means of the Sylex Strain Gage Installation Kit (SGK-01).

 

Strain Gage Installation Kit SGK-01

 

The Strain Gage Installation Kit allows a fast, easy and reproducible way of installing the fiber optic Strain Gages (SG-01) and the fiber optic Strain Gage Chain (SGC-01) to various surfaces. Installation of the optical gages happens using a patented methodology which makes use of a specially designed, reusable mounting tool called a sensor pad.