Crackmeters and Jointmeters
Crackmeters and jointmeters are utilised in various geotechnical engineering sectors from dams to commercial structures. They provide valuable information on the progression of an interface or individual cracks in a structure.
Overview
In detail
The range
Geosystems supply numerous versions of crackmeters and jointmeters to the Australian geotechnical sector. Ranging from vibrating wire to eddy current. Remote and manual data logging and transfer options are available on most instruments.
d-Micro Geotechnical Crackmeter
The highly versatile d-Micro crackmeter is ideal for monitoring cracks in underground mines, parking garages, dams under rehabilitation, residential buildings, bridge decks, and pillars or posts. d-Micro crackmeters output readings in degrees C and microns eliminating the necessity for expensive analog-to-digital conversions. Readings can be made using the USB port of a laptop or tablet computer (SensorViewer).
Fibre Optic Displacement Sensor (FOD)
The FOD optic linear position and displacement transducer is an absolute position transducer that provides highly precise position and displacement measurements. Ideal to monitor deformation in structures over a longer-term. The sensor is able to monitor deformations over joints and cracks.
Uniaxial and Triaxial Surface Joint Fissuremeter
The RTF is a jointmeter which measures the displacement of cracks in structures of rock masses. The jointmeter is designed to monitor the relative movement of adjacent surfaces across cracks or conjunction joints. The RTF crackmeter (fissuremeter) is available as a uniaxial (RTF-1D) and triaxial (RTF 3D).
Tell-Tails Crackmeter
The Tell-Tails is a basic, easy-to-use crackmeter. The adhesive backings stick either side of a crack. As the crack develops the two scales on the Tell-Tails indicate the cracks’ movement.
Downloads
Documentation, openly available
Everything you need to specify, install and integrate the Crackmeters and Jointmeters — no login, no paywall.
Related
Often specified alongside
ESS Earth
Resistance Wire Extensometer RWE
- Application
- Underground hard rock and coal mine displacement monitoring
- Monitoring points
- Pillars, stope walls, roof
Geosystems
JM Series Vibrating Wire Jointmeter
- Range
- 25, 50, 100, 150, 200, 250, 300 mm (200/250/300 mm not available for JM-E)
- Accuracy
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