VW Piezometers

VW Piezometers

The Model 4500 Standard Piezometer is designed to measure fluid pressures such as groundwater 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.

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    2 shielded twisted pair (22 awg) with drain wire, 0.250" diameter, blue PVC jacket.

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    2 shielded twisted pair (22 awg) with drain wire, 0.335" diameter, yellow PU jacket, integral 0.125" ∅ polyethylene vent tube.

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Features & Applications
Specifications
Downloads
Options & Accessories

Features

  • Proven and reliable vibrating-wire technology
  • Wide variety of pressure ranges and configurations
  • Porous filter stone protects diaphragm
  • Heavy duty instrumentation cable pre-installed
  • Excellent stability for long-term measurements
  • Stainless steel construction resists corrosion
  • On-board thermistor

Applications

  • Ground water elevation
  • Pore water pressure
  • Dam uplift pressure
  • Tanks & pipelines
  • Tunnel linings

specifications

Standard Ranges 4500S | −100 to 350, 700 kPa; 1, 2, 3 MPa
4500SH | −100 kPa to 5, 7.5, 10, 20 MPa
4500AL(V) | 70, 170 kPa
Over Range 2 × rated pressure
Resolution 0.025% F.S. (minimum)
Accuracy ±0.1% F.S.
Linearity <0.5% F.S. (±0.1% F.S. option available in some ranges)
Temperature Range¹ −20°C to +80°C
Length x Diameter 4500S | 133 × 19.1 mm
4500SH | 194 × 25.4 mm
4500AL(V) | 133 × 25.4 mm

 

¹ High temperature versions available on request.
* 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).

Downloads

Options & Accessories

  • Pressure ranges up to 218 ksi (150 Mpa)
  • Vented or un-vented
  • Cable length
  • Housing (standard, drive point, etc.)
  • Custom connectors for A/D system interface
  • High temperature
  • High corrosion
  • Dynamic
  • Intelliducer support for dynamic pressures