What device is most accurately used to measure moisture absorbed by semiporous structural materials?

The most accurate device for measuring moisture absorbed by semiporous structural materials is a moisture meter. Moisture meters are specifically designed to assess moisture content within materials such as wood, drywall, and concrete, which are frequently encountered during water restoration processes.

These meters operate in various ways, including pin-type and non-invasive options, allowing for precise readings of moisture levels. Pin-type moisture meters use electrodes that penetrate the material to gauge moisture presence, while non-invasive models use electromagnetic signals to assess moisture content without damaging the material.

Moisture sensors, while useful, are typically broader in application and may not provide the level of specificity required for semiporous materials. A thermometer is intended for temperature measurement, and a hygrometer measures humidity in the air rather than moisture in materials. Hence, the moisture meter stands out as the best tool for accurately assessing the moisture levels in semiporous structural materials.