Hydrostatic settlement system for monitoring vertical movement in embankments, fills, and foundations.
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Hydrostatic settlement system for monitoring vertical movement in embankments, fills, and foundations.
The Geolook Vibrating Wire Liquid Settlement Gauge is designed to monitor settlement or heave in soils, embankments, and earth-fill dams. It operates on the principle of hydrostatic leveling, providing a highly accurate measurement of elevation change between a reference reservoir and a buried sensor. The system consists of a vibrating wire pressure transducer housed in a settlement cell, connected via liquid-filled tubing to a reservoir located on stable ground. As the cell settles relative to the reservoir, the liquid head pressure increases, which the sensor converts into a precise settlement reading.
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The system relies on the physical law that fluid seeks its own level. A reservoir is installed at a stable, known elevation. A fluid-filled tube connects this reservoir to the sensor buried at the monitoring point.
The pressure measured by the sensor is directly proportional to the height difference (head) between the reservoir and the sensor. If the ground settles, the sensor moves downward, increasing the vertical distance from the reservoir, thus increasing the liquid pressure reading.
The sensor is typically installed on a concrete pad or plate at the base of the fill. The tubing is then trenched horizontally to the readout station. It is critical to coil extra tubing at the sensor location (often called a 'pig-tail') to allow for strain-free settlement without pulling or kinking the lines.
De-airing the liquid lines during commissioning is essential for accuracy, and our system includes bleed valves to simplify this process.
The G72-V450 is typically a 'vented' system. A vent tube runs alongside the liquid tube to ensure that atmospheric pressure changes act equally on both the reservoir and the sensor, effectively cancelling out barometric errors.
This design ensures that the measured pressure change is due solely to ground movement, providing sub-millimeter accuracy even during weather fronts.
The system relies on the physical law that fluid seeks its own level. A reservoir is installed at a stable, known elevation. A fluid-filled tube connects this reservoir to the sensor buried at the monitoring point.
The pressure measured by the sensor is directly proportional to the height difference (head) between the reservoir and the sensor. If the ground settles, the sensor moves downward, increasing the vertical distance from the reservoir, thus increasing the liquid pressure reading.
The G72-V450 is typically a 'vented' system. A vent tube runs alongside the liquid tube to ensure that atmospheric pressure changes act equally on both the reservoir and the sensor, effectively cancelling out barometric errors.
This design ensures that the measured pressure change is due solely to ground movement, providing sub-millimeter accuracy even during weather fronts.
The sensor is typically installed on a concrete pad or plate at the base of the fill. The tubing is then trenched horizontally to the readout station. It is critical to coil extra tubing at the sensor location (often called a 'pig-tail') to allow for strain-free settlement without pulling or kinking the lines.
De-airing the liquid lines during commissioning is essential for accuracy, and our system includes bleed valves to simplify this process.
We are currently updating the specific model configurations and technical datasheets for this product category.