Vibrating Wire Load Cell- Introduction & Operating Principle

Encardio-rite Model ELC-31V is a vibrating wire load cell with a hydraulic centre hole uniquely designed to be applied during rigorous environments associated with civil engineering applications and construction activity.

Vibrating wire load cell presides over conventional electrical strain gage or semiconductor type load cell through its usage of frequency as an output signal, as opposed to using voltage.

The use of this load cell allows transmitting frequency by over 1km of cable length without finding disruptions from water penetration, temperature fluctuations, contact resistance or leakage to ground. It finds its application in series with a hydraulic jack for applying load. Consequently, it verifies load as applied by the hydraulic jack.

One of the main concern of geologists, design engineers, and Construction Company is the falling of the roof or sidewall in underground cavities which causes great disruption of life, property, money, and time.

Natural disasters like slope falling, landslides, roof collapsing, etc. can happen anywhere in the world. Preventive measures and corrective actions are taken to ensure that there is minimal threat to life and property. One such method is anchoring.

Anchoring has found its way as a very useful and important preventive method. It reduces the above-mentioned disasters by the usage of pre-stressed grouted anchors providing an effective support system. In any optimum, safe and economic use of anchoring, anchor spacing and anchor load have to be determined. This is implemented by the usage of centre hole vibrating wire load cell and a suitable readout unit. In those cases where multiple sensors are installed, a data logger may also be used to make the study and analysis easier.

Vibrating Wire Load Cell — General Description

Encardio-rite ELC 31-V Vibrating Wire Load Cell is built from stainless steel and is fluid-filled, varying in capacities from 500 kN to 2000 kN. Load cells with different internal diameter can be arranged on request. Apart from that, a 2500kN load cell without a Centre hole is also available.

Also Read: Centre Hole Load Cell Installation: Preparation & Troubleshooting

The Vibrating Wire Centre Hole Load Cell is constructed using a sensitive pressure pad which is created by welding together two stiff steel discs at their periphery. De-aired fluid fills the space inside the load cell.

The load cell works by monitoring the pressure on the fluid as any load applied to the cell is reflected in the fluid. Change is fluid pressure is then used to observe the variation in the load being applied to the cell. Using a think, load distribution plate, the load is distributed equally over the …[Continue Reading]