Earth Pressure Cells
- Sisgeo Earth Pressure Cells to monitor total pressure in earthfill dams and embankments or placed at the interface between the structure and the wall of excavation.
- Constructed from two stainless steel plates, welded together around their pheriphery.
- The anular space between these plates is filled under vacuum by deaired oil.
- Pressure pad is connected by means of a stainless steel tube to the transducer forming a closed hydraulic system.
- An electrical signal proportional to the applied pressure may be remotely read on a variety of portable readout units or dataloggers.
| Model | L143 MODEL | L141 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 (1) |
< ±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 (2) | 2250 - 3000 Hz | - |
| Output signal | frequency | 4-20 mA current loop |
| Operating temperature range | -20°C +80°C | -20°C +80°C |
| Transducer size |
OD 27mm, 180mm long OD 1", 7.1" long |
OD 27mm, 180mm long OD 1", 7.1" long |
| Material / weight | stainless steel / 0.6 kg | stainless steel / 0.6 kg |
| Cables |
0WE104K00ZH LSZH cable 0WE104X20ZH LSZH armoured cable |
0WE102KEOZH 0WE104X20ZH LSZH armoured cable |
| Max cable length to logger (3) | 1000 m (for more information see FAQ#77) | 1000 m (for more information see FAQ#77) |
| Material | Stainless steel |
| Total weight | 4.5 Kg (9.9 lbs) |
| Hydraulic line | 6 mm OD (0.25" OD), stainless steel tube |
