Vibrating Wire And Multipoint Piezometers
The Vibrating Wire And Multipoint Piezometers also called multilevel piezometers, provide measurements of pore-water pressure at different elevations in the same borehole. Isolation of the pore-water pressure at each elevation is achieved by the fully-grouted installation method.
Full scales (FS) |
0-350 kPa up to 0-3.5 MPa |
---|---|
Overpressure | 2 x Full Scale |
Sensitivity | 0.025% FS |
Linearity | < ±0.4% FS |
Total Accuracy | < ±0.25% FS (< ±0.1% FS on request) |
Typical frequency range | 2250 - 3000 Hz |
Thermal zero shift | 0.01÷0.03 % FS /°C |
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) |