Description
The EPP-30V vibrating wire piezometer is a high-performance sensor designed to accurately measure pore water pressure in soil, earth/rock-fill foundations, and mass concrete structures.
The instrument features a stainless steel body, hermetically sealed under a high vacuum (0.001 Torr) to ensure long-term stability and protection against moisture ingress.
Each unit is equipped with an integrated thermistor for temperature measurement and a surge arrester to safeguard against lightning.
A glass-to-metal sealed connector provides a secure and reliable cable interface.
For installation, the piezometers can be placed at multiple depths in boreholes using cement grouting or sand placement techniques, depending on site conditions.
Specifications
| Parameter | Details |
|---|---|
| Range (MPa) | 0.2, 0.35, 0.5, 0.7, 1.0, 1.5, 2.0, 3.5, 5.0, 10.0 (specify) |
| Accuracy | ±0.25% FS (standard) / ±0.1% FS (optional) |
| Non-linearity | ±0.5% FS |
| Over-range limit | 150% FS |
| Temperature limit | −20°C to +80°C |
| Thermistor | YSI 44005 or equivalent |
| Dimensions (Ø × L) | 42 × 185 mm |
Technical Summary
| Instrument Name | Piezometer – Heavy Duty |
|---|---|
| Sensor Type | Vibrating Wire |
| Construction | Stainless steel, heavy duty |
| Applications | Embedded in soil, rockfill, or concrete for pore pressure monitoring; suitable for water level observation in boreholes |
| Measured Parameter | Water level / Pore pressure |
| Range Options | 0.2 to 10.0 MPa (specify as required) |
| Testing & Calibration | Thermal cycling (−20°C to +80°C), pressure cycling (2000 cycles), reverse pressure test, individual temperature compensation and calibration for high accuracy and repeatability |
| Key Features | Electron beam welded, hermetically sealed, long-term stability |
| Waterproofing | IP-68 rated, fully waterproof up to maximum operating pressure |
| Dimensions | Ø 42 mm × 185 mm length |
