SSG Vibrating Wire Soil Settlement Gauge
ROBUST & STABLE
DESIGNED FOR LONG TERM APPLICATIONS
AVAILABLE WITH VW OR FIBER OPTIC SENSORS
The SSG is a soil settlement gauge used to measure settlement or heave at a precise location in soils.
The SSG consists of a vibrating wire or fiber optic pressure transducer housed in a corrosion-resistant stainless steel body. The housing is normally attached to a base plate and connected to a reference station by a twin tubing filled with water (or anti-freeze solution) and fitted with connectors. The reference station consists of a liquid-filled reservoir open to atmospheric pressure and located at a known elevation. The settlement or heave is measured relatively to the elevation of the reservoir.
The SSG is robust and stable. It can be installed in boreholes, standpipes, soil or concrete. The settlement gauge can also be attached to structures for monitoring settlement. To ensure maximum performance, the twin tubing should be flushed at regular intervals to remove air bubbles, and data should be compensated for temperature changes and changes in atmospheric pressure. For best results, de-aired water or antifreeze solution is recommended.
Specifications
| Settlement range | 51, 101, 20, 35, 50, 75 m |
| Transducer type | Vibrating wire or fiber optic |
| Maximum overpressure | 1.5 × range |
| Accuracy2 | ±0.5% F.S. (±0.1% F.S. optional) |
| Resolution | 0.025% F.S. (min.) |
| Thermal drift or transducer | ±0.1% F.S. / oC |
| Reservoir | PVC and ABS |
| Fluid type | Water (optional antifreeze solution) |
| Thermistor | 3kΩ (see model TH-T) – with vibrating wire transducers only |
| Twin tubing | Polyethylene, 1/4 in. X 0.170 in. |
| Cable | IRC-41A(P), IRC-390, CFO-3STD, CFO-9RF |
With IRC-41 AV cable. Available for VW transducers only
2 Calibrated accuracy of the pressure transducer.
Note: Please refer to FOP data sheet for specifications of FO pressure transducers.
Ordering Info
Please specify:
- Range and transducer type
- Cable type and length
- Twin tubing length
- Fluid type: water or antifreeze solution
- If length of tubing exceeds 300 m, contact manufacturer for selecting adequate tubing size
Optional equipments:
- Readout instruments: MB-3TL, SENSLOG
