Visit - br br Thermal imagers - testo 875 br Thermal imager with 160 x 120 pixels and Thermal Sensitivity of 80mK br Thermal imagers measure the infrared energy emitted by surfaces remotely. The Infrared energy emitted by the object is focused on to an infrared detector. By the laws of Physics the Infrared energy emitted by the object is related to the temperature of the object. The Thermal Imager converts this infrared energy into a heat picture of the object which in thermal Imaging Terminology is known as a Thermogram. Different temperatures in the Thermogram are represented by different colors. The distribution of temperature on the object gives the user vital information on the operating condition of the machine which helps the user take corrective actions. br br Thermography has been used for many years by preventive maintenance engineers to inspect motors, circuit boards, switchgear, electrical connectors, bearings and pumps etc. br br The thermal imager testo 875 in ergonomic pistol grip design, with 160 x 120 pixels and a thermal sensitivity of 80mK offers Excellent Image quality.