How it works


…proven excellency in determining Modulus of Elasticity (MOE) of lumber. Sorting lumber to grades such as C16, C18, C24, T10, T15, MSR2100 or MGP12. ROSGRADE comply with most relevant grading standards.

Measurements by the interferometer are not disturbed by surrounding interferences such as sound. In stress test ROSGRADE reach a repeatability over 99 %. ROSGRADE measurements and algorithms determine frequency to the same quality as laboratory equipment (accelerometer). Correlation factor 1.0.

How it works

The board travels crosswise on a conveyor. As the board enters ROSGRADE measurements, a cylinder vibrates the board by a stroke to the end. The robust industrial interferometer measures the oscillation. Frequency is calculated by robust and fast algorithms. Length is retrieved either from a separate gauge, PLC or prompted by the user on ROSGRADE screen. The calculation results in determining highest possible grade, which is communicated to the PLC-system.

Production statistics is stored in a SQL database. Reports extracted from the database fulfills the demands on documentation stipulated by the standard EN-14081 etc.