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Standard Piezometers (VW) | Model 4500S(V) · 4500SH · 4500AL(V)

  • Model 4500S Standard Piezometer.
  • Model 4500SV Vented Piezometer.
  • Model 4500SH, with heavy duty housing.
  • Model 4500AL Standard Piezometer.
  • Model 4500ALV Vented Piezometer.
Model 4500S(V) · 4500SH · 4500AL(V)

The Model 4500 Standard Piezometer is designed to measure fluid pressures such as ground water elevations and pore pressures when buried directly in embankments, fills, etc. Also for installation inside boreholes, observation wells and standard (>19 mm diameter) piezometer riser pipe. The Model 4500SH is designed with a heavy duty housing for pressures that exceed 3 MPa. The Model 4500AL is designed for low-pressure ranges. The vented version (ALV) provides automatic compensation for barometric pressure changes. Thermistors are included to measure temperatures.*


Standard Ranges¹
4500S | 350, 700 kPa; 1, 2, 3 MPa
4500SV | 350, 700 kPa
4500SH | 350, 700 kPa; 1, 2, 3, 5, 7.5, 10, 20 MPa
4500AL(V) | 70, 170 kPa
Over Range
1.5 × rated pressure
0.025% F.S. (minimum)
±0.1% F.S.
<0.5% F.S. (±0.1% F.S. optional)
Temperature Range²
−20°C to +80°C
Length × Diameter
4500S | 133 × 19.1 mm
4500SV | 146 × 19.1 mm
4500SH | 194 × 25.4 mm
4500AL(V) | 133 × 25.4 mm

¹Piezometers with a range of 350 kPa and higher are capable of reading negative pressures to −100 kPa. Please contact GEOKON for more information. Other ranges available on request.

²Custom, high temperature versions available on request.
For standard high temperature piezometers, please see the Model 4500HT Series.

*Please Note: All GEOKON vibrating wire piezometers include tripolar plasma surge arrestors to protect the sensor coils from possible lightning damage. Semiconductor piezometers are also available (see 3400 Series).

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.