Products & Services

Piezometer

Standard Piezometers

Model 4500S, 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.*

Specifications 4500S 4500SH 4500AL(V)
Standard Ranges

350, 700 kPa;

1, 2, 3 MPa

5, 7.5, 10,

20 MPa

70, 170 kPa
Over Range 2 x rated pressure
Resolution 0.025% F.S. (minimum)
Accuracy ±0.1% F.S.
Linearity <0.5% F.S. (±0.1% F.S. optional)
Temperature Range¹ -20°C to +80°C
Length x Diameter 133 x 19.1 mm 194 x 25.4 mm 133 x 25.4 mm

¹High temperature versions available on request.



Drive Point Piezometers

Model 4500DP

The Model 4500DP Drive Point Piezometer has the transducer located inside a housing with an EW drill rod thread and removable pointed nose cone. This model is ideally suited for use in peat and soft clays. The piezometer may be recovered at the end of the job. Models are also available which use metric threads allowing for installation using conventional cone penetrometer or other drill rods with adapters.*

Specifications
Standard Ranges 70, 170, 350, 700 kPa; 1, 2, 3, 5, 7.5 MPa
Over Range 2 x rated pressure
Resolution 0.025% F.S. (minimum)
Accuracy ±0.1% F.S.
Linearity <0.5% F.S. (±0.1% F.S. optional)
Temperature Range¹ -20°C to +80°C
Length x Diameter 187 x 33.3 mm

¹High temperature versions available on request.



Heavy Duty Piezometer

Model 4500HD

The Model 4500HD Heavy Duty Piezometer is designed for direct burial in fills and dam embankments. The 4500HD is used in conjunction with heavily armored cable to withstand earth movements during construction. Recommended for use in earth dams.*

Specifications
Standard Ranges 70, 170, 350, 700 kPa; 1, 2, 3, 5, 7.5 MPa
Over Range 2 x rated pressure
Resolution 0.025% F.S. (minimum)
Accuracy ±0.1% F.S.
Linearity <0.5% F.S. (±0.1% F.S. optional)
Temperature Range¹ -20°C to +80°C
Length x Diameter 203 x 38.1 mm

¹High temperature versions available on request.

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