1940nm Band Pass Filter for Infrared Moisture Meter

1940nm Band Pass Filter for Infrared Moisture Meter

Principle of Infrared Moisture Meter: When far infrared rays are radiated to an object, absorption, reflection and transmission can occur. However, not all molecules can absorb far infrared rays, and only those polar molecules that show an electrical charge will work. Water, organic substances and polymers have the property of strongly absorbing far infrared rays. When these substances absorb the energy of far infrared radiation and make their molecules, the inherent vibration and rotation frequency of atoms and the frequency of far infrared radiation, it is very easy to molecules, atoms, resonance or rotation, resulting in a greatly intensified movement, which is converted into heat energy to make the internal temperature, thus making the material quickly get softened or dried.