ASTM D 4444 - 92 (Reapproved 2003) Standard Test Methods for Use and Calibration of Hand-Held Moisture Meters1.pdf

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Designation:D -92 (Reapproved 2003) INTERNATIONAL Standard Test Methods for Use and Calibration of Hand-Held Moisture Meters1 This standard is issued under the fixed designation D :the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon (E)indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1.Scope 3.1.1 conductance meters-Conductance meters are those 1.1 These test methods apply to the measurement of mois-that measure predominantly ionic conductance between points ture content of solid wood including veneer and wood of applied voltage usually dc.Direct-current conduct-ance products containing additives that is chemicals or adhesives meters are monly referred to as“resistance"meters.Most (subject to conditions in 6.4 and 9.4).They also provide mercial conductance meters are high-input impedance guidelines for meter use and calibration by manufacturers and (about 1012 2 )wide-range (10 to 1012 2)ohmmeters.Their users as alternatives to ovendry measurements. scales are calibrated to read directly in moisture content 1.2 Conductance and dielectric meters are not necessarily (oven-dry mass basis)for a particular calibration species and at equivalent in their readings under the same conditions.When a sp...

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