Multi-Point Vibrating Wire Piezometer Strings allow for multiple Vibrating Wire Piezometers to be connected on a single cable. This facilitates the installation of fully grouted multiple Piezometers as the single cable prevents the risk of vertical void channels that can potentially occur which can create inter-zone pressure leakage. This can cause inaccurate pore pressure measurements between each Piezometer depth preventing a good understanding of the ground conditions.

Tough polyurethane-jacketed, Kevlar® reinforced, non-stretch cable is employed to withstand the rigors of installation and is entirely water-blocked to minimize any leakage. No conductors are shared to maximize the independent reliability of each sensor.

Fully grouted installation permits multiple Piezometers to be simply and reliably installed in a single borehole for improved understanding of pore pressure performance within varying ground conditions. The Piezometer string and grout pipe are placed in the borehole and cement-bentonite grout is pumped from the bottom until the borehole is filled. Vibrating Wire Piezometers are the electrical Piezometers of choice as the frequency output of vibrating wire devices is immune to external electrical noise and able to tolerate wet wiring common in geotechnical applications.

Product features

• No inter-zone leakage
• Straightforward installation
• Hermetically sealed, stainless steel construction
• Immune from external electrical noise
• Data logger compatible