NIEST000 BOREHOLE ROD EXTENSOMETERS
Extensometers are used to monitor the displacement between one or more points located along the shaft of a borehole and the reference head installed at its end.
These instruments are used for monitoring subsidence, foundation settlements, convergence during excavation, landslides, wall and diaphragm deformations, piling, and for controlling deep movements in soil or rock masses.
Borehole rod extensometers consists of an anchor grouted at the bottom of the hole, directly connected to a fiberglass or stainless steel rod enclosed in a nylon sheath, allowing it to slide freely and transmit movement from the anchor to the surface head.They are also used whenever high-precision surveying is required, even over long distances.In the case of multipoint extensometers, the anchoring points are distributed at different depths along the borehole.
Applications
- Building
- Dams
- Landslides
- Railways
- Structural
- Tunnels
- Version: with fiberglass rods | stainless steel rods
- Diameter: 7 mm | 8 mm
- Rod junctions: continuous | threaded couplings (M/F)
- Protective antifriction sleeve: nylon Ø 12 mm | PVC pipe 1/2” (length 3 m)
- Head: stainless steel from 1 to 6 points
- Diameter of head: 160 mm
- Superior anchors: stainless steel
- Inferior anchors: galvanized rebars L=500 mm
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NI100 900,00 €Digital Modbus Data logger, NI100, is expandable for external analog modules and optimized for advanced applications such as Structural Health Monitoring.
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NI2400 3.000,00 €Ethernet Data logger NI2400 - Next Industries is extendable up to 24 Universal Channels, which can be extended to 384 channels by integrating additional multiplexer boards.