Detailed Product Description

The fibre optic pore water pressure sensor PWP-02 consists of a membrane that is connected to a FBG mounted under pre-strain. When pressure is applied to the membrane, the membrane will deflect resulting into a change in the FBG strain value and hence also in a change of the reflected FBG wavelength.

The head of the pore water pressure sensor is foreseen of a cylindrical porous stone that allows water penetration. Dependent on the application, this stone can be flat or cylindrical.

In order to compensate for temperature influences, a high resolution temperature probe is integrated within the ruggedised housing.

The housing is made of stainless steel and is terminated with an optical connector using a plastic tubing. Tubing lengths and connector can be specified following the needs of every application.

The sensor is single connectorised but can on request also be designed for series configurations.

Features

The pressure sensor PWP-02 can measure water pressure and temperature with a resolution of 0,05% Full Scale and 0,1 ?C respectively and an accuracy of 1% Full Scale and 1 ?C respectively. The pressure range can be chosen between 1 and 150 bar.

Applications

The pressure sensor PWP-02 can be applied for embedded pressure measurements in structures consisting of bentonite, clay, concrete,