|Statement||H.J. Kostkowski and R.D. Lee.|
|Series||NBS Monograph -- 41|
|Contributions||Kostkowski, H J., Lee, R D.|
Report reviewing the theoretical methods of optical pyrometry and the application of these methods at the National Bureau of Standards in realizing, maintaining and distributing the International Practical Temperature Scale above ºC is presented. In the theoretical presentation, the concepts of effective and mean effective wavelengths are introduced, and Cited by: BULLETINOFTHEBUREAUOFSTANDARDS.[vol.1,no ^ed1,at^ensitywillbeover,andat °idincreaseofthephoto. Pyrometry: The Papers and Discussion of a Symposium on Pyrometry Held by the American Institute of Mining and Metallurgical Engineers at Its Chicago Meeting, September, () Chapter: Theory and Accuracy in Optical Pyrometry with Particular Reference to the Disappearing-filament Type. A pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface. Various forms of pyrometers have historically existed. In the modern usage, it is a device that from a distance determines the temperature of a surface from the amount of the thermal radiation it emits, a process known as pyrometry and sometimes radiometry.
Construction of optical pyrometer: The main parts of an optical pyrometer are as follows: An eye piece at one end and an objective lens at the other end. A power source (battery), rheostat and millivoltmeter (to measure current) connected to a reference temperature Size: KB. Two principal theories are employed by pyrometry: Planck's law and the Stefan-Boltzmann law. Planck's law is used in narrow-band pyrometers, where only one or a few specific wavelengths are targeted. The Stefan-Boltzmann law is used in broad-band pyrometers, where a wide range of wavelengths are measured. Pyrometry, being part of a highly specialised field of measuring techniques, has developed a certain mysterious aura about it. This mystery stems from the false perception that the technique is difficult to master. In fact, pyrometers are easy to operate in industrial applications so long as the basic principles are known and observed. A pyrometer is a device that is used for the temperature measurement of an object. The device actually tracks and measures the amount of heat that is radiated from an object. The thermal heat radiates from the object to the optical system present inside the pyrometer. The optical system makes the thermal radiation into a better focus and passes.
Optical pyrometers are designed for short or long viewing. With long viewing, a relatively small area can be examined at large distances (up to 20 m). For example, an instrument with a ratio of would have a spot size of 5 cm at a 6-m distance. Infrared pyrometry is accomplished by measuring the thermal radiation emitted from the object. Practical Pyrometry - The Theory, Calibration and Use of Instruments for the Measurement of High Temperatures Paperback – Ap by Ervin S. Ferry (Author) See all 41 formats and editions Hide other formats and editions. Price New from Used from Author: Ervin S. Ferry, Glenn A. Shook, Jacob R. Collins. Pyrometry: The Papers and Discussion of a Symposium on Pyrometry Held by the American Institute of Mining and Metallurgical Engineers at Its Chicago Meeting, September, () Chapter: Optical and Radiation Pyrometry. Buy Practical pyrometry: the theory, calibration, and use of instruments for the measurement of high temperatures on FREE SHIPPING on qualified orders.