New pore pressure sensors from Bestech Australia are fiber optic versions of the conventional piezometer, but completely passive, offering inherent insensitivity to environmental induced drift.
Pore pressure sensors have been developed and manufactured by the European company Fiber Sensing.
The pore water pressure sensors feature high accuracy as well as resolution while the total fiber optic design ensures intrinsic immunity to electric sparks and EMI/RFI.
Compatible with most common FBG measurement units, these sensors combine compact size as well as high resistance to corrosion and harsh environments with long-term reliability.
The pore pressure sensors are also suitable for remote sensing and can be installed several kilometers away from the measurement unit.
The FBG sensors offer intrinsic multiplexing capability that allows the concatenation of a large number of sensors in a single optical fiber.
These sensors are suitable for insertion in series with other FBG sensors. They are particularly suitable for use in difficult-to-reach locations and large-scale sensing networks.
Fiber Sensing sensors are provided with a configuration file, allowing their characteristics to be automatically inserted into Fiber Sensing measurement units.
Pore water pressure sensors can be used in a large range of monitoring applications such as:
The implementation of complex sensing networks in large structures is made simpler with Fiber Sensing accessories. These include metallically protected jumpers especially designed to resist the harsh civil engineering environments, not only during the construction of the structures, but also during its lifetime.
The pore pressure gauges are operational in temperatures between -20°C and 80°C.
The optic fiber pore pressure gauges are available in Australia and New Zealand from Bestech Australia Pty Ltd.