Vibrating Wire Piezometers
Model 4500S › 4500SH › 4500AL(V) Standard Piezometers
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 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:
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Standard Ranges |
350, 700 kPa; 1, 2, 3 MPa 5, 7.5, 10, 20 MPa 70, 170 kPa |
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Over Range |
2 × rated pressure |
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Resolution |
(minimum) 0.025% F.S. |
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Accuracy |
±0.1% F.S. |
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Linearity |
< 0.5% F.S. |
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Temperature Range |
−20°C to +80°C |
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Length × Diameter |
133×19.1mm 194×25.4mm 133×25.4mm
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Model 4500DP Drive Point Piezometers
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 × rated pressure |
|
Resolution |
(minimum) 0.025% F.S. |
|
Accuracy |
±0.1% F.S. |
|
Linearity |
< 0.5% F.S. (±0.1% F.S. optional) |
|
Temperature Range |
−20°C to +80°C |
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Length × Diameter |
187×33.3mm
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