VW Anchor Load Cell
Geosense® VWLC 5000 series Vibrating Wire Anchor Load Cells consist of a cylinder of high strength steel with 3 to 6 vibrating wire strain sensors (depending on capacity) mounted parallel to the longitudinal axis arranged equidistant around the circumference which measure the compression of the cylinder under load.
They are manufactured with a centre hole to accommodate anchors, rock bolts and tendons.
With the multi-sensor configuration it is possible to obtain accurate readings under mildly eccentric loading conditions as the sensors are read individually.
The readings from the individual sensors are averaged and when used in conjunction with a calibration factor, supplied with each cell, allow the applied load to be calculated.
In multi-strand anchors it is therefore possible to tension the strands uniformly by monitoring the load in each sensor as appropriate.
The abutment plate (provided locally) is normally made to suit specific site requirements and load distribution plate pairs (supplied by Geosense) should be used to minimise eccentric loading and provide a smooth parallel bearing surface and evenly spread the load to the cell. These should be inserted between the load cell and the anchor head.
Hydraulic Anchor Load Cell
The Geosense® HLC-6000 series Hydraulic Anchor Load Cells consist of a sensitive pressure pad formed by joining two stiff steel discs at their periphery. The void inside the cell is filled with de-aired fluid. When load is applied to the cell the pressure of the inside liquid changes. The changes in pressure correspond directly to the load applied.
Manufactured with a centre hole to accommodate anchors, rock bolts and tendons.
The pressure in the loads cell is measured either by a manometer or a vibrating wire transducer (VWDT-5000) which are available in the following models:
HLC-6000 – Manometer (scale in kN) for pressure indication
HLC-6500 – Vibrating wire transducer
Model HLC-6500 can be read with a VW-2106 direct readout or connected into a GeoLogger data acquisition system.
Mounting surfaces should be flat and parallel for optimum performance and the use of very stiff abutment plates and load distribution plates is recommended.
The abutment plate (provided locally) is normally made to suit specific site requirements and the load distribution plate (supplied by Geosense) should be inserted between the load cell and the anchor head.
Strain Gauge Anchor Load Cell
The Geosense® SGLC 7000 series load cell consists of a cylinder of high strength steel with a series of electrical resistance strain gauges connected around the periphery as a Wheatstone Bridge that compensates for unevenly distributed loads and provides a single mV/V signal output.
They are manufactured with a centre hole to accommodate anchors, rock bolts and tendons.
When the load cell is subjected to load the resistance of the strain gauges will change and the output signal is directly proportional to the applied load. The load cells are compensated for temperature variations often found during normal operating environments and have in-built lightning protection.
Connection to the load cell is via a heavy duty multi-core sheathed cable which can be connected to a direct portable readout, switched terminal units or a data logging system. Mounting surfaces should be flat and parallel for optimum performance and the use of abutment plates and load distribution plates is recommended.
The abutment plate (provided locally) is normally made to suit specific site requirements and the load distribution plate (supplied by Geosense) should be inserted between the load cell and the anchor head.
VW Solid Load Cell
The Geosense® VWLC 5050 series of Vibrating Wire Load Cells consist of a solid cylinder of high strength steel with 3 vibrating wire strain sensors mounted parallel to the longitudinal axis arranged equidistant around the circumference which measure the compression of the cylinder under load.
With the multi sensor configuration it is possible to obtain accurate readings under mildly eccentric loading conditions as the sensors are read individually.
The readings from the individual sensors are averaged and when used in conjunction with a calibration factor, supplied with each cell, allow the applied load to be calculated.
The Geosense® VWLC 5050 series is typically used to measure and monitor compressive load or force in structural members, struts and piles.
Connection to the load cell is via a heavy-duty multi-core sheathed cable which can be connected to a direct portable readout, data logging or Wi-SOS 400 system.
Strain Gauge Solid Load Cell
The Geosense® SGLC 7050 series load cell consists of a solid cylinder of high strength stainless steel with a series of electrical resistance strain gauges connected around the periphery as a Wheatstone Bridge that compensates for unevenly distributed loads and provides a single mV/V signal output.
It is most commonly used to measure load acting on piles, struts, arch supports and props.It is most commonly used to measure load acting on piles, struts, arch supports and props.
When the load cell is subjected to load the resistance of the strain gauges will change and the output signal is directly proportional to the applied load. Mounting surfaces should be flat and parallel for optimum performance and the use of loading cap for strut monitoring is recommended.
Connection to the load cell is via a heavy-duty multi-core sheathed cable which can be connected to a direct portable readout, data logging or Wi-SOS 400 system.
Hydraulic Solid Load Cell
The Geosense® HLC-6050 series of Hydraulic Load Cells consist of a sensitive pressure pad formed by joining two stiff steel discs at their periphery. The void inside the cell is filled with de-aired fluid. When load is applied to the cell the pressure of the inside liquid changes. The changes in pressure correspond directly to the load applied.
The pressure in the loads cell is measured either by a manometer, vibrating wire or resistance transducer and are available in the following models:
- HLC-6050 – Manometer for pressure indication
- HLC-6051 – Vibrating wire transducer
- HLC-6052 – Resistance transducer
Models HLC-6051/2 can be read with portable manual readouts, connected into a GeoLogger or Wi-SOS 480 automatic data acquisition system.
Mounting surfaces should be flat and parallel for optimum performance and the use of very stiff bearing plates and load distribution plates is recommended.
The Geosense® HLC-6050 series is typically used to measure and monitor compressive load or force in structural members, struts and piles.
Load Cell for Tunnel Linings & Struts
This consists of a sensitive pressure pad formed by joining two stiff steel discs at their periphery. The void inside the cell is filled with de-aired fluid. When load is applied to the cell the pressure of the inside liquid changes. The changes in pressure correspond directly to the load applied.
The pressure in the loads cell is measured by a resistance transducer.
Mounting surfaces should be flat and parallel for optimum performance and the use of very stiff bearing plates and load distribution plates is recommended. Electric cable connects the load cells to a suitable remote readout system.
This model of load cells is used to monitor stresses in steel linings, struts, piles and support beams.