Title: Moisture meter calibration for untreated and ACQ-treated southern yellow pine plywood
Author: Glass, Samuel V.; Carll, Charles G.
Source: Research Note FPL-RN-0312. Madison, WI: U.S. Department of Agriculture. Forest Service, Forest Products Laboratory. 7 pages.
Description: Conductance moisture meter readings using stainless steel screws as electrodes were compared with gravimetric moisture content for 1) southern yellow pine (SYP) dimensioned lumber, 2) untreated (underlayment grade) SYP plywood, and 3) SYP plywood treated with alkaline copper quaternary. Meter readings were taken with the meter set to the manufacturer-provided species correction for SYP. In the sample of dimensioned lumber used in this investigation, direct meter readings corresponded closely with gravimetric moisture contents. The manufacturer-provided correction for SYP wood was thus deemed adequate. In contrast, meter readings in plywood, whether treated or untreated, deviated substantially from gravimetric moisture content values. Calibration equations for the plywoods are thus presented for predicting gravimetric moisture content from moisture meter readings.
Keywords: Moisture meter, electrical conductance, moisture content, calibration, plywood, alkaline copper quaternary, southern yellow pine, southern pine, moisture
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Glass, Samuel V.; Carll, Charles G. 2009. Moisture meter calibration for untreated and ACQ-treated southern yellow pine plywood. Research Note FPL-RN-0312. Madison, WI: U.S. Department of Agriculture. Forest Service, Forest Products Laboratory. 7 pages
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