ASTM C1789

Full Name

ASTM C1789 – Standard Test Method for Calibration of Hand-Held Moisture Meters on Gypsum Panels

Scope

This test method applies to the calibration of handheld moisture meters for gypsum board, glass faced gypsum panels and fiber-reinforced gypsum panels by means of electrical conductance and dielectric meters.

The test uses wetted test specimens which are dried down in at least 5 steps to determine the moisture content based on the weight loss in comparison to the dry weight. The test also supplies the ERH values for each of the drying steps.

Keywords

conductance meters; dielectric meters; moisture content; moisture gradients

Resources

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