Proof Tester

The Proof Tester is used to check the strength of fingerjoints.

Essentially every piece of fingerjointed timber is passed linearly through the proof loader at 20 - 50 metres per minute, during which a pre-determined load is applied.

The fingerjoints either pass (remain unbroken) or fail (break).

The Proof Tester uses nitrogen to power the load ram, while a hydraulic system is used to retract the load ram..  The benefits of using nitrogen is there is greater load accuracy whilst proof loading.  The nitrogen pressure system gives a quick application of the proof load and the time taken to achieve the load is approximately one second.

When setting up the proof tester you need to ensure that the infeed and outfeed systems fully support the length of timber being loaded into and out of the tester.

Loadcells should be calibrated yearly to ensure accuracy of load.