Measurement of temperature
H. R. N. Jones · Oxford University Press eBooks · 2000
This chapter discusses general types of techniques used for the measurement of temperature. It describes intrusive methods, such as thermometers and thermocouples, that involve the introduction into the system of a probe or detector whose output signal gives an indication of the temperature. It also mentions non-intrusive methods, such as pyrometers, radiometers, and modern laser-based systems, that are normally used where the temperatures are too high or the environment too hostile for a probe. The chapter considers methods of temperature measurement that are based on the emission or absorption of thermal radiation. It uses some form of heat transfer analysis in order to extract correct temperature information, which involves a combination of all heat transfer mechanisms.