Ref: PZ-1050
Piezometric level sensor
- Sensor type: vibrating wire pressure sensor
- Measurement range: ≈ 3.5 bar / 7 bar
- Accuracy: ±0.1 % F.S.
- Inlet filter: 50 micron stainless steel sintered filter
- Allowable overpressure: 150 % F.S.
- Resolution: 0.025 % F.S.
- Materials: stainless steel
- Built-in temperature sensor: internal thermistor
- Operating temperature: -40 °C to +125 °C
- Electrical connection: vibrating wire 2-wire cable + 2 thermistor wires
- Dimensions: 20.2 × 114 × 20.2 mm (cross-section × length)
- Applications: groundwater levels, pore pressure in boreholes, soft soils, tunnels, mines, dams, pipelines.
Download the product datasheet
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Standard lead time: 4 to 6 weeks
Overview
The vibrating wire piezometer is designed for accurate measurement of pore pressure in saturated soils, deep foundations, dikes, tunnels and geotechnical boreholes.
The sensor incorporates a stainless steel vibrating wire cell, protected by a sintered filter ensuring excellent hydraulic contact with the soil and long-term stability.
Technical specifications by model
| Type | VW 50 psi | VW 100 psi |
|---|---|---|
| Measurement range | 0–350 kPa (≈ 3.5 bar) | 0–700 kPa (≈ 7 bar) |
| Accuracy | ±0.1 % F.S. | ±0.1 % F.S. |
| Resolution | 0.025 % F.S. | 0.025 % F.S. |
| Allowable overpressure | 150 % F.S. | 150 % F.S. |
| Inlet filter | 50 µm stainless steel sintered filter | 50 µm stainless steel sintered filter |
| Body material | Stainless steel SUS316 | Stainless steel SUS316 |
| Operating temperature | -40°C to +125°C | -40°C to +125°C |
| Built-in temperature sensor | Internal thermistor (0.1°C resolution) | Internal thermistor (0.1°C resolution) |
| Signal type | Frequency (vibrating wire) + thermistor | Frequency (vibrating wire) + thermistor |
| Electrical connection | Vibrating wire 2-wire cable + 2 thermistor wires | Vibrating wire 2-wire cable + 2 thermistor wires |
Applications
- Water level monitoring in aquifers
- Pore pressure monitoring in saturated soils
- Groundwater level monitoring in boreholes
- Geotechnical monitoring of slopes and embankments
- Control of dikes, dams and levees
- Monitoring of diaphragm walls and retaining walls
- Instrumentation of tunnels and galleries
- Control of deep foundations and piles
- Environmental monitoring of groundwater
- Hydrogeological studies (recharge, drawdown)
- Monitoring of infiltration or retention basins
- Hydrogeological monitoring of open-pit mines
- Precision (max error)
- ≤ 0.1 %
- Operating temperature range
- -40 to 125 °C
- Surcharge
- 150 %PE
- Cable
- 4-wire cable
Datasheet-VW-Piezometer_PMi_FR.pdf
20.2 x 114 x 20.2 mm
- Measurement range: 50 psi or 100 psi
- Connected data logger
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