The GBO Magnetic Extensometer are available in 2 main configurations. All 2 configurations listed below use an GBO Reed Switch Probe to provide a reading in magnetic zones allocated along the lenght of borehole. MAGNETIC EXTENSOMETER WITH 1” PVC PIPE Installation as a single purpose device to monitor settlement only. MAGNETIC EXTENSOMETER WITH INCLINOMETER CASING Installed in conjuction with GBO Inclinometer Casing to obtain both vertical and horizontal deformation data from a single installation.
| Cable Lengths |
50 m, 100 m, 150 m, 200 m |
| Resolution |
± 1 mm |
| Probe Construction |
Stainless Steel and Hard Nylon |
| Probe Dimension (L x Ø) |
182 x 19 mm |
| Acces Tube |
33 mm (1.3") O.D Sch. 80 PVC |
| Plate Magnet Material |
Plate Magnet Material |
| Plate Magnet Dimension (L x W x D) |
300 mm x 300 mm x 9.5 mm |
| Spider Magnet Material |
Body : PVC Legs : Spring Steel |
| Spider Magnet Dimension(L x O.D x I.D) |
Closed : 445 x 70 x 34 mm Released : 445 x 203 x 34 mm |
| Datum Magnet Material |
PVC |
| Datum Magnet Dimension |
54 x 60 mm |
| Borehole Size |
102 - 152 mm (4 - 6") |
| Power |
9V Alkaline Battery |
• Stainless Steel Probe Material
• Replaceable 9V Battery
• Visible andAudible Indicators
• Waterproff Construction
• Stretch Resistant Measuring Tape
