Pyrometry (/paɪˈrɒmɪtri/) is the measurement of high temperatures using indirect methods such as radiative heating, thermocouples, and optical pyrometry. The spelling of pyrometry is a combination of the Greek prefix "pyro," meaning fire, and the suffix "-metry," meaning measurement. The "pyro-" prefix is pronounced as /paɪrəʊ/, while the "-metry" suffix is pronounced as /ˈmɛtrɪ/. Together, the word is pronounced as /paɪˈrɒmɪtri/. Pyrometry is commonly used in science and industry to measure high temperatures in processes like metalworking, glassmaking, and ceramics.
Pyrometry is a scientific technique used to measure high temperatures accurately and precisely. It involves the study and measurement of heat and temperature using various instruments and methods. Pyrometry is essential in industries and research fields where accurate temperature readings are critical for maintaining operational efficiency, quality control, and safety.
The main objective of pyrometry is to determine the temperature of an object or a material by measuring the radiation emitted from its surface. This can be achieved through different types of pyrometers, such as optical pyrometers, radiation pyrometers, and infrared pyrometers. These devices rely on the principles of thermal radiation and the detection of specific wavelengths of electromagnetic radiation to estimate temperature.
Pyrometry finds applications in a wide range of industrial processes, including metalworking, glass manufacturing, ceramics production, and heat treatment of materials. In addition to industrial applications, pyrometry is also utilized in scientific research, such as studying combustion, material properties at high temperatures, and exploring the behavior of various substances under extreme temperature conditions.
The accuracy and reliability of pyrometry measurements depend on factors like calibration, emissivity correction, and proper instrument selection based on the temperature range being measured. Regular calibration and maintenance of pyrometric instruments are essential to ensure accurate temperature readings and reliable results.
The art of measuring degrees of heat, or the expansion of bodies by heat.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "pyrometry" originates from the Greek roots "pyr" meaning "fire" and "metron" meaning "measure". It combines these roots to form "pyrometron", which translates to "measuring fire". This term eventually evolved into "pyrometry" in English. In scientific context, pyrometry refers to various methods and techniques used to measure high temperatures and thermal radiation.