Avery Weightronix launches calibration method

Avery Weightronix has launched a method of calibrating silos and vessels mounted on load cells that is said to be faster and more convenient than traditional methods.

Force calibration causes minimal disruption and equipment downtime and uses hydraulic pressure instead of weights.

There is also generally no need to empty the vessel and Avery Weightronix can apply a force to the existing material to get an accurate calibration.

The method involves applying force to the installed load cells and measuring that force with an independent set of high-accuracy reference-load cells.

The method is accurate up to +/-0.1 per cent and is traceable to UKAS/QSRMC.

There are three methods depending on the application and the ground clearance beneath the vessel or silos: push up, push down or pull down.

Using the push-up method, jacks and reference load cells are placed beneath the existing vessel.

The jacks then reduce the load on the vessel's load cells, applying weight that can be measured by the reference-load cells.

The push-down method uses an H-type bracket, which fits over the existing load-cell mounting bracket.

The jack and reference-load cells are again used for measurement and calibration.

Finally, the pull-down calibration uses hydraulic cylinders and reference-load cells to accurately calibrate the silo or hopper.

This negates the need to hang weights onto the vessel's structure and is quicker and easier to set up.

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