Energy travels throughout the universe at the speed of light in the form of electromagnetic radiation. Depending upon the energy level these radiations are classified as Gamma rays, X rays, ultra violet rays, visible rays, infrared rays, micro waves and radio waves. Together all these types of radiation make up one long continuous spectrum called “Electromagnetic spectrum”

Energy level of the electromagnetic radiation is measured in terms of wavelength denoted by (λ). Sometimes segments of electromagnetic spectrum are described in terms of frequency (f). The relationship between wavelength and frequency is
f = 1/ λ

Infrared Radiation

Energy levels between 0.75 µm to 14 µm on the electromagnetic spectrum is infrared radiation. All objects above 0 °K emit radiation (energy) from their surface in the form of electromagnetic waves due to vibration of atoms. The amount of energy emitted depends upon surface temperature and surface characteristics.

The Temperature Range:

Our thermal imagers measure temperatures from -40 to 3000 °C. The instruments are available in different temperature ranges. The selection of the temperature range depends on the application.