**Moisture Mapping** is a technique used to determine the distribution and movement of moisture in a structure or environment. It is crucial for identifying and addressing moisture issues that can compromise building integrity and indoor air quality. ### Moisture Monitoring Equipment Various types of equipment are employed in moisture mapping, each serving a specific purpose. Some common examples include: - **Moisture Meters:** These devices directly measure the moisture content of building materials, such as wood, concrete, and drywall. - **Hygrometers:** They measure the relative humidity of the air, providing insights into the overall moisture levels in the environment. - **Infrared Cameras:** They detect surface temperature variations, which can indicate areas of moisture accumulation. - **Scanning Microwave Moisture Meters:** These devices non-invasively measure moisture content through walls and ceilings. ### What is a Device that Measures the Moisture Content in the Air Called? A device that measures the moisture content in the air is known as a **hygrometer**. Hygrometers operate on different principles, including: - **Psychrometers:** These devices measure the difference in temperature between a wet and dry bulb to determine relative humidity. - **Capacitive Hygrometers:** They use a capacitor to detect changes in the moisture content of the air. - **Resistance Hygrometers:** These devices utilize a moisture-sensitive material that changes resistance in response to humidity levels. By understanding the available moisture monitoring equipment and the functions of specific devices like hygrometers, professionals can effectively perform moisture mapping, identify moisture-related issues, and develop appropriate remediation strategies.