TN9 Infrared Thermometer Module

Infrared, just like any light ray, is an Electromagnetic Radiation, with lower frequency (or longer wavelength) than visual light. Anything above absolute zero (-273.15° C or 0° K), radiates in the infrared. Even ice cube, snow, your refrigerator emit infrared. The Stefan-Boltzmann Law, where the total radiation energy is proportional to the fourth power of the absolute temperature and Wien Displacement Law, the product of the peak wavelength and the temperature is found to be a constant, are implemented in the TNm infrared thermometer module. The infrared radiation of measure target is collected by a infrared mirror through a IR filter of 5 or 8 µm cut in frequency to the infrared thermopile detector. The detector signal will be amplified and digitalize by the low noise and high linearity OP and AD convertor. The ambient temperature sensor( usually included in the same package as the thermopile detector) is set in the space near the optical system to detect the fast change of the ambient temperature. The signal processing section receives the signals from these temperature sensors to calculate the target surface temperature by a mathematical algorithm.