The purpose of this paper is to introduce new measurement techniques and configurations in gas suction pyrometry. A detailed description of three types of mini-pyrometers for the study of burning and heat transfer processes is presented. A suction pyrometer whose inner cavity is insulated by ceramic wool was developed for use in high velocity and high temperature jets of combustion products. A second type of pyrometer was developed for measuring oscillating gas temperatures, based on a micron-size sensitive head located in a spherical piece of fibrous material. through which the hot gases are aspirated. A third pyrometer was developed with an electrically-heated thermocouple and pulsed suction for use in low velocity #x201C;dirty#x201D; gaseous media.
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