EDS-70V/EDS-70P Borehole extensometer measures extension that takes place with the time in a bored hole or in several bored holes in a rock mass.
This system is similar to the EDS-63U-D, except that the EDS-70V/EDS-70P head assembly uses vibrating wire displacement sensors (the EDE-VXX in t
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Instrument Name
Borehole extensometer-multipoint
Sensor Type
Vibrating wire
Construction
Available in two options - upto 3 point and upto 6 point, includes vw displacement sensors
Application
Deformation in ground/ rock mass, such as in tunnel, power house, deep excavation, mines, slopes
Parameter
Deformation/settlement/heave
Range
50, 100, 150 mm
Key Testing / Calibration
Thermal cycling (-20 to +80°C), thermal variation data, accuracy test, waterproof test for WP version (Sensor)
Key Feature/Advantage
Can be used at location that are inaccessible
Protection (Waterproofing)
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Dimension (mm)
-
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