Vibrating Wire And Multipoint Piezometers
- Sisgeo Vibrating Wire And Multipoint Piezometers to measure soil pore pressure.
- Applications include control of over-pressure in silt and clay soils, measurement of permeability and hydraulic gradients in dams and water pressure evaluation for landslide safe-rates.
- Output signals, suitable for transmission over long distances, are easily read and automated.
- Multipoint Piezometer is a string of Vibrating Wire pressure transducers connected through a single multicore cable that allow to have until No.8 measuring point into one borehole.
- They are available with several full scale and with both HAE and LAE filters.
| MODEL | PK45M |
| Description | Vibrating wire piezometer for multilevel installation with fully grouted method |
| Full scales (FS) |
0-350 kPa up to 0-3.5 MPa 0-51 psi up to 0-510 psi |
| Overpressure | 2 x Full Scale |
| Sensitivity | 0.025% FS |
| Linearity (1) | < ±0.4% FS |
| Total Accuracy (2) |
< ±0.25% FS (< ±0.1% FS on request) |
| Typical frequency range (3) | 2250 - 3000 Hz |
| Thermal zero shift | 0.01÷0.03 % FS /°C |
| Electric insulation | > 50 MΩ |
| Temp. operating range | -20 to +80 °C |
| Temperature sensor | built-in thermistor |
| Material | stainless steel |
| Diameter and weight | Ø 48.3 mm (19”), 2 kg (4.4 lbs) |
| FILTER UNIT | |
| Type | LAE filter |
| Material | stainless steel or Vyon® |
| Pore size | 40-50 μm |
| CABLE | |
| Signal cables for up to 4 piezometer string |
0WE1160LSZH 8-pair, LSZH jacket cable 0WE11600PVC 8-pair, PVC jacket cable |
| Signal cables for up to 8 piezometer string |
0WE1320LSZH 16-pair, LSZH jacket cable 0WE13200PVC 16-pair, PVC jacket cable |
| Max cable length to logger (4) | 1000 m (for more information see FAQ#77) |
