The Vibrating Wire Jointmeter is specially designed for measuring the relative displacement of two adjacent surfaces in three orthogonal directions.
The Vibrating Wire Triaxial Jointmeter is designed to monitor three way displacement at joints and cracks. The reference anvil design allows the Vibrating Wire transducers to show independent movement in all directions, irrespective of each other. The Jointmeter comprises a 3D mounting system which consists of two arms and two groutable anchors. Three vibrating wire displacement transducers, which also monitor temperature, are installed within the mounting system and positioned for monitoring. |
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Product Features |
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Product Benefits |
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Operation |
The groutable anchors are installed either side of a joint or crack; the installation jig provided ensures that the two anchors are positioned correctly. Once the anchors are set in position the installation jig is removed and the VW transducers are installed. The VW transducers are positioned against the reference anvil face, most commonly set to their mid-point, and the cables wired up.
Movement in the monitored position will result in relative change between the two anchors; this in turn will cause one or more of the VW transducer rods to move independently, changing the frequency of the wire. This change in frequency is recorded and can be converted to show the movement in millimetres. Typically signal cables run from the sensors to a datalogger for remote reading. Alternatively, a terminal/junction box is used and a handheld readout or datalogger is used to manually record the readings. An initial datum reading is taken and this can then be compared to all subsequent readings to give the change and magnitude of displacement. |
Application |
Vibrating Wire Triaxial Jointmeters are used for monitoring of movements at construction joints; typical examples include:
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Technical Rating |
As the correct installation of any monitoring sensor or system is vital to maximise performance and accuracy, Geomotion makes the following recommendations for the skill level of the installation contractor.
Technical Rating for this Product: BASIC As a minimum the installer has read and fully comprehends the manual, and if possible has observed these instruments or systems being installed by others. Geomotion offer installation and monitoring services to support this system. For more information please contact us. |
Company |
Geomotion Malaysia
No. 2, Jalan PP11/4, Alam Perdana Industrial Park Taman Putra Perdana, 47130 Puchong Selangor Darul Ehsan, Malaysia T: +60 3 8066 3757 T: +60 3 8066 3535 E: [email protected] |
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