Earth Pressure Cells
The Earth pressure cells are designed to monitor total pressure in earth fill dams, embankments, and at the interface between structures and soil. Pressure applied to the surface of the pressure cell is transmitted hydraulically to a pressure transducer which can be read with a portable readout or a data logger.
Model | L143 MODEL | L141 MODEL |
---|---|---|
Model description | VW pressure transducer | piezo-resistive pressure transducer |
Full scales (FS) | 0-350 kPa up to 0-10.0 MPa 0-50 psi up to 0-1450 psi |
0-200 kPa up to 0-10.0 MPa 0-29 psi up to 0-1450 psi |
Sensitivity | 0.03% FS | 0.002% FS |
Temperature sensor | built-in thermistor | |
Overload | 100% FS | 30% FS (FS=200 kPa) 100% FS on request |
Pol. MPE | < ±0.25% FS < ±0.1% FS on request |
< ±0.20% FS (for 200kPa FS) < ±0.15% FS (all other FS) |
Electrical supply | 12-40 V DC | |
Typical frequency range | 2250 - 3000 Hz | |
Output signal | frequency | 4-20 mA current loop |
Operating temperature range | -20°C +80°C | -20°C +80°C |
Material / weight | stainless steel / 0.6 kg | stainless steel / 0.6 kg |