The Magnetic Ring Extensometer is used to measure settlement or heave of soft ground under the influence of loading or unloading due to the construction of embankments, fills, buildings, foundations, and structures.
The Magnetic Ring Extensometer of PMT comprises of access tube, magnet assemblies and a portable magnetic probe with reed switch. A probe is lowered inside a telescoping guide tube to detect and measure the position of magnetic anchors located around the guide tube at various depths along the borehole or within the fill. Plate anchors are used in fill and spider anchors in boreholes.
- - Reliable, low cost, accurate
- - Unlimited number of points
- - High accuracy and simplicity in readings
- - Portability of probes
- - Versatility in component assemblies
|Borehole Diameter||> 54mm|
|Sensor range||Unlimited (Preferably 200m)|
|Sensitivity||1mm (Normal), 0.01mm (optional)|
|Accuracy||±1mm (Normal), ±0.5mm (optional)|
|Temperature Range||-20 to 80C|
|Material (Probe)||Stainless steel|
|Access Tube||25 – 30mm PVC Pipe|