Thermography basics

Thermography, also known as infrared thermography or thermal imaging, is a non-contact method for detecting and measuring the temperature of objects and surfaces by detecting their emitted infrared radiation. In thermography, a special camera called a thermal imager or infrared camera is used to capture and display the thermal radiation emitted from an object or surface. The basic principle of thermography is that all objects emit thermal radiation in the form of infrared energy, which is invisible to the human eye. The intensity and wavelength of this radiation depend on the temperature of the object or surface. By detecting and measuring the infrared radiation emitted by an object, a thermal imager can generate a visual image that shows the distribution of temperature across the surface. Thermography can be used in a variety of applications, including building inspection, industrial maintenance, electrical and mechanical equipment monitoring, and medical imaging. It is a valuable tool for identifying hot spots, energy loss, leaks, and other issues that may be invisible to the naked eye. Some key factors to consider in thermography are the emissivity of the surface being measured, the distance and angle between the camera and the surface, and environmental factors such as temperature, humidity, and air movement. Calibration and proper training are also important to ensure accurate and reliable results.