Pressure Cells
Standard Type
The Model 4800 Earth Pressure Cells* are designed to measure total pressure in earth fills and embankments. All cells consist of two circular stainless steel plates welded together around their periphery and spaced apart by a narrow cavity filled with de-aired oil. Changing earth pressure squeezes the two plates together causing a corresponding increase of fluid pressure inside the cell. A vibrating wire pressure transducer converts this pressure into an electrical signal which is transmitted to the readout location.
| Specifications | |
|---|---|
| Standard Ranges¹ | 70, 170, 350, 700 kPa; 1, 2, 3, 5, 7.5, 20 MPa |
| Over Range | 1.5 × rated pressure |
| Resolution | 0.025% F.S. |
| Accuracy² | ±0.1% F.S. |
| Temperature Range¹ | −20°C to +80°C |
| Height × Diameter¹ | 6 × 230 mm |
¹Other ranges and sizes available on request.
²Transducer accuracy established under laboratory conditions.
Total system accuracy (pressure transducer + pressure cell) is subject to site-specific variables.