Accuracy of a capacitance-type and three resistance-type pin meters for measuring wood moisture content

The moisture content (MC) of 441 wood samples from 30 batches and 14 species was estimated using 1 capacitance-type meter (Wagner L612) and 3 resistance-type pin meters, and compared to ovendry MC. The L612 was the most accurate. The pin meters, whose data were corrected accurately for wood temperature, gave similar results to each other. The results were largely unperturbed by the choice of user settings for species/wood density. The basic (residual) variability of meter readings was similar for the two meter types but the pin meters had a stronger tendency to over- or underestimate MC depending on the batch. In contrast to the pin meters, the L612 was nondestructive, and quick and easy to use.

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