The Drive-in Piezometer VWP-3400 & SGP-3500 Series is designed for fast, reliable, and highly accurate pore pressure measurement in soils that cannot be easily drilled—making it ideal for projects requiring rapid installation and minimal disturbance. Using a robust body and tapered drive-in tip, this piezometer is installed directly into the ground using basic driving equipment, allowing teams to collect data almost immediately after placement.

With its vibrating wire technology, the VWP-3400 Series delivers long-term stability, excellent noise immunity, and precise readings even in harsh field environments. Meanwhile, the SGP-3500 Series combines strain-gauge sensing with durable stainless-steel construction, ensuring consistent performance in both soft and stiff ground conditions.

These instruments are widely deployed across embankments, levees, earthfill dams, road construction zones, tailings storage facilities, and rapid-response geotechnical investigations. Because installation requires no borehole, the system significantly lowers time, cost, and risk while maintaining high data integrity. Combined with dataloggers or real-time telemetry, the Drive-in Series supports continuous remote monitoring for proactive decision-making and early-warning applications.

This combination of speed, precision, and durability makes the Drive-in Piezometer VWP-3400 & SGP-3500 Series an efficient solution for field teams seeking a dependable pore pressure monitoring method without the operational burden of drilling.

Key Features

Direct drive-in design — installs quickly without drilling or grouting.
Vibrating wire technology (VWP-3400) — delivers stable, long-term accuracy and strong resistance to electrical noise.
Strain-gauge technology (SGP-3500) — reliable performance with fast response in variable soil conditions.
Rugged stainless-steel construction — engineered for demanding geotechnical sites.
Rapid deployment — ideal for emergency slope assessments and time-sensitive investigations.
Long cable lengths available — supports deeper installations and flexible site layouts.
Compatible with real-time monitoring systems — integrates with loggers for integrated, continuous data.

Advantages

No borehole required → drastically reduces installation time and cost.
Minimal ground disturbance → ensures more representative pore pressure readings.
Immediate data readiness → start monitoring as soon as the sensor is installed.
High reliability → designed for long-term stability even in difficult soil conditions.
Ideal for soft soils and embankments → performs where traditional piezometers are challenging to install.
Suitable for rapid emergency deployment → perfect for quick risk assessments on active slopes or levees.
Flexible monitoring approach → supports both periodic manual readings and real-time telemetry.