Induction Wood Hygrometer Testing Method and Principle
Induction Wood Hygrometer Testing Method
After the completion of wood products, neither the shape nor the material will change. At this point, the key factors determining the internal quality of wood products are mainly the moisture content and drying stress of the wood. Production manufacturing enterprises need to accurately grasp the moisture content of wood products. When the wood products reach equilibrium moisture content during use, the wood is less likely to crack or deform at this time. The moisture content of wood can be quickly detected using a Induction Wood Hygrometer, with the specific testing steps as follows:
Hold the instrument, ensuring that the probe does not come into contact with the test object. Press the power switch ON/OFF, and the digital display on the LCD screen should show within ±0.5 of 00.0. Gently press the probe on the surface of the wood to be tested, ensuring good contact between the test object and the probe. Once the reading stabilizes, the displayed number is the moisture value of the object being tested. Due to the significant interference of metal materials, magnetic materials, conductors, and semiconductors with electromagnetic waves, affecting the stability and accuracy of the data, there should be no metal materials or similar substances at the bottom and around the test object.
Induction Wood Hygrometer Testing Principle
The Induction Wood Hygrometer is based on the principle that microwaves are absorbed as they pass through a substance, resulting in attenuation of microwave energy. It can be used to measure the moisture content of coal powder, petroleum, various crops, check the humidity of granaries, measure the moisture content of soil, fabrics, and so on. For production line conveyor belt control, continuous non-contact online microwave measuring instruments can be installed, as shown in the diagram. At this point, a pair of microwave antennas are installed on the measurement bracket of the production line. The transmitting antenna is installed below the conveyor belt, and the receiving antenna is installed above the conveyor belt. The density compensation measurement channel is installed before the microwave measurement channel, and the microwave rays pass vertically through the material to be measured.
