Thermal measurements using infrared thermometry - A new generation of infrared thermometers

Advances in infrared thermometry are discussed. The efficiency of the infrared radiation of an object is measured with the emissivity control of the thermometer and is then converted to a digital signal. The need to have the proper emissivity setting to detect radiation efficiency is examined. The use of dual-mirror systems, lasers, or light sighting systems to aim the infrared thermometers in order to measure small objects (microscopic) in the correct field of view is studied. The thermometers measure temperatures at 227 K with an accuracy of + or - 0.5 K and objects as small as 125 microns; they are applicable for agricultural, medical, electronic and entomological fields. The capabilities of multiplexer systems are described.