EARTH PRESSURE CELLS MODEL DP48K SERIES

MODEL DP48K SERIES
Earth Pressure Cells consist of two stainless steel plates welded along the edges, with a small gap between them filled with hydraulic fluid. External pressure compresses the plates, and this pressure is transferred to the hydraulic fluid inside. A pressure transducer then converts the fluid pressure into an electrical signal, which can be read and recorded.
Model DP48K Earth Pressure Cell (front), Model DP482K Jackout Pressure
Cell (center) and Model DP481K Contact Pressure Cell (rear).
EARTH PRESSURE CELLS
MODEL DP48K SERIES
APPLICATIONS OPERATING PRINCIPLE
ADVANTAGES AND LIMITATIONS
- Vibrating Wire Technology:
The DP48K series Earth Pressure Cells are equipped with vibrating wire transducers, providing
long-term stability, reliability over long distances, and resistance to moisture intrusion. - Thermistor for Temperature Monitoring:
All models include a built-in thermistor for temperature measurements and are equipped with a gas discharge tube for
protection against lightning.
a semiconductor-based pressure transducer can be used, such as - Dynamic Stress Measurement:
For applications involving dynamic stress
changes, the DP35K series
Performance of the cells depends heavily on the surrounding soil properties. Achieving optimal performance typically requires
calibrating the cells in the specific soil type of the application. For best results, cells with maximum stiffness and high aspect ratios
(D/t > 10, where D is the cell’s diameter and t is its thickness) are recommended. In practice, Dustin cells, which use hydraulic oil
with less than 2 ppm of dissolved gas, have shown over-registration of soil pressure by less than 5%.