VW 3D CRACK METER VWTCM-4600
VWTCM-4600 3D crack meters monitor three-way displacement across cracks and joints in concrete, rock, soil and structures.
The central reference block allows the vibrating wire transducers to show independent movement in all directions, irrespective of each other.
Description
The VWTCM-4600 comprises a 3D mounting frame comprising two arms and two groutable anchors and three vibrating wire displacement transducers complete with built-in thermistors.
Groutable anchors are installed either side of a joint or crack; the installation jig provided ensures that the two anchors are positioned correctly. Once they are set in position the installation jig is removed and the the VWDT-6000 transducers installed. They are positioned against the reference block and typically set to their mid-point.
Any movement in the monitored position will result in relative change between the two anchors which will cause one or more of the VW transducer rods to move independently, thus changing the frequency of the wire. This change in frequency is converted to show the movement in millimetres.
Typically, signal cables run from the sensors to a data logger for remote reading. Alternatively, a terminal/junction box is used and a handheld readout or data logger is used to record the readings manually.
An initial datum reading is taken, which is then compared to all subsequent readings to give the change and magnitude of displacement.
Additional information
| Brands | |
|---|---|
| Ranges |
12.5, 25 mm |
| Resolution |
<0.025% FS |
| Accuracy |
± 0.1% FS |
| Non linearity |
<0.5% FS |
| Operating temperature |
-20 to +70 °C |
Reviews (0)
About brand
Geosense Ltd is one of Europe’s leading manufacturers and suppliers of instruments to the geotechnical, civil engineering, mining and environmental industries.
Geosense products are used globally in major projects in more than 68 countries. With a comprehensive in-house design and manufacturing capability, we can provide products not only to tight deadlines but also to suit custom-engineered solutions for specific project requirements.
Geosense specialises in the manufacture of vibrating wire and MEMS sensors, which are used to produce a wide range of instruments. In addition we manufacture automated data acquisition systems to complement our sensors, including wireless systems.
Data Sheets
Related products
IPX IN-PLACE EXTENSOMETER
In stock
The In-Place Extensometer (IPX) offers automated monitoring of standard magnetic extensometer installations. The system is designed for a simple, adaptable installation with a single cable connection at the top of the borehole. Its large measurement range accommodates large levels of settlement or heave, and ease of adjustment means it can be reconfigured for changed site conditions such as embankment filling or cutting.
DRIVE-IN PIEZOMETERS WP-3400 & SGP-3500 SERIES
In stock
Drive-in piezometers, also referred to as push-in piezometers, are designed for installing in soft clays, organic or fine grained cohesionless soils typically with a SPT-N value less than 10. They are available with a CPT fitting or 1” BSP thread.
Depending on the depth and type of soil, they can either be pushed directly into the soil from ground level to the required depth or pushed into the base of a CPT test or drilled borehole.
PRESSURE TRANSDUCER VWT-9000 SERIES
In stock
The Geosense® VWT-9000 Series of Pressure Transducers are designed to be connected directly into hydraulic or pneumatic pressure lines by means of a 1/4” BSPF thread. Other thread sizes are available on request.
They are typically used to monitor uplift pressures within dams and to enable manual standpipe piezometers to be upgraded into an automated data acquisition system.
OPTICAL DISPLACEMENT SENSOR NODE
In stock
SUBMERSIBLE TILT METER
In stock
TILT BEAM MEMS
In stock
MEMS Tilt Beams are designed for attachment to structures, on either a vertical or horizontal surface, for the measurement of tilt or differential settlement.
They consist of a highly accurate MEMS sensor housed in a fully sealed enclosure which is mounted on a lightweight rigid GRP beam. This can be mounted onto the structure using special anchors. The GRP beam has a very low coefficient of thermal expansion meaning that thermal affects are minimised.
HUMIDITY & CORROSION (CorroDec®2G)
In stock
The structural infrastructure must always meet requirements such as performance, stability and durability. These requirements will have a lasting effect on our mobility in the future. The corrosion risk and the corrosion activity of the reinforcing steel largely define these requirements and are determined by various impact and material parameters.
INCLINOMETER CASING XC
In stock
Reviews
There are no reviews yet.