Moisture mapping is the process of measuring and recording the moisture content of an environment or material. This information is essential for a variety of purposes, including: * **HVAC System Optimization**. Moisture mapping can help identify areas where moisture buildup is occurring, allowing HVAC systems to be adjusted to improve efficiency. * **Building Envelope Analysis**. Moisture mapping can help identify areas where the building envelope is allowing water to penetrate, leading to costly repairs. * **Product Testing**. Moisture mapping can be used to test the moisture resistance of products, ensuring they meet industry standards. ### Moisture Monitoring Equipment A variety of moisture monitoring equipment is available, each with its own advantages and disadvantages. Some of the most common types of equipment include: * **Psychrometers**. Psychrometers measure the moisture content of the air by measuring the temperature difference between two thermometers, one of which is covered in a wet wick. * **Hygrometers**. Hygrometers measure the relative humidity of the air using a sensor that changes resistance based on moisture content. * **Moisture Meters**. Moisture meters measure the moisture content of materials by inserting two probes into the material and measuring the electrical resistance between the probes. ### What is a device that measures the moisture content in the air called? A device that measures the moisture content in the air is called a hygrometer. Hygrometers work by measuring the humidity of the air. Humidity is the amount of water vapor in the air. The higher the humidity, the more water vapor is in the air. Hygrometers can be used to measure the humidity in both indoor and outdoor environments.