Errors of non-contact temperature measurement

In recent years, there is a trend of improving the performance and efficiency all existing measuring instruments due to leap in technology. Almost every industry uses variety technologies that apply temperature control. Temperature heated body can be estimated by parameters its thermal radiation, which are electromagnetic waves different lengths. measurement necessary for comfortable automatic control management production processes. The use non-contact means makes it possible measure of, firstly, moving objects, secondly, objects inaccessible places, thirdly, avoid damage when controlling large temperatures. High speed, possibility without disconnecting object from technological process, ensuring personnel safety, up 3000 °C – these advantages method. To obtain reliable values thermophysical quantities know processes occurring interaction device or sensor with measurement. These affect magnitude error, is, result deviation true value measured parameter. This paper describes errors pyrometers, namely total radiation pyrometer, partial spectral ratio as well shows results comparative calculations between them. Expressions evaluation methodical pyrometers given, shown.