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
Standard Ranges: 4500S | −100 to 350, 700 kPa; 1, 2, 3 MPa
                          4500SH | −100 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 Range: −20°C to +80°C
Length × Diameter: 4500S | 133 × 19.1 mm
                             4500SH | 194 × 25.4 mm
                             4500AL(V) | 133 × 25.4 mm

Geokon, Incorporated, 48 Spencer Street, Lebanon, New Hampshire, 03766 · USA. Tel.: 1(603)448-1562, FAX: 1(603)448-3216, e-mail: info@geokon.com