Belt Calibration:

For the highest orders of accuracy a dead weight belt calibration translates belt frequency to belt tension. Using the calibration rig show opposite a belt is split and supported over the actual pulleys of the application. The pulley centre distance is also set to match the centre distance of the application. The free end of the belt is loaded by weights, either directly or by a 4x weight multiplication arm. Precision weights are progressively added and the corresponding belt frequency is recorded at each increment. A graph of belt frequency against tension is then drawn which can be used as the reference for future belt tension measurements.
The calibration jig may be purchased by users who have many belts to tension and who maintain their own standards facility. CLAVIS are pleased to undertake such belt calibrations in our own standards laboratory for all of their customers as a free of charge service.
Although the calibration rig simplifies belt calibration the direct belt loading method shown above may be replicated easily possibly on the actual application itself.
By simply extending the lever arm the load magnification may be increased. The standard calibration rig is capable of performing belt tension calibrations with belt loads up to 2000N.