Definition of pyrometer Pyrometer

py•rom•e•ter

We found 8 definitions of pyrometer from 6 different sources.

What does pyrometer mean?

Noun Plural: pyrometers
pyrometer - a thermometer designed to measure high temperatures
		thermometer measuring instrument for measuring temperature
		optical pyrometer, pyroscope a pyrometer that uses the color of the light emitted by a hot object
		pyrometric cone a pyrometer consisting of a series of cones that melt at different temperatures
		radiation pyrometer a pyrometer for estimating the temperature of distant sources of heat; radiation is focussed on a thermojunction connected in circuit with a galvanometer

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pyrometer (Noun)
A thermometer designed to measure high temperatures.
pyrometer (Noun)
An instrument for measuring the thermal expansion of solids.

pyrometer (n.)
An instrument used for measuring the expansion of solid bodies by heat.
pyrometer (n.)
An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.

pyrometer
pī-rom′e-tėr, n. an instrument in the form of a metallic bar for measuring the temperature of bodies under heat.—adjs. Pyromet′ric, -al.—n. Pyrom′etry, the science or art of measuring degrees of heat beyond the compass of the mercurial thermometer. [Gr. pyr, fire, metron, a measure.]

pyrometer
An instrument for determining the pressure of fired gunpowder by the registered compression of oil,--invented by Dr. W. E. Woodbridge, and used by him and Maj. Mordecai (U. S. Ordnance Department) in experiments at Washington Arsenal, 1854-55. It consists of a small hollow steel cylinder filled with oil and a piston which is pressed inwards upon the oil by the powder gases. The piston has a small stem projecting inwards, which is guided by a tube in the bottom of the cylinder. A steel point presses against the stem and scratches a line upon it, when the piston is moved. The pyrometer is received by a hollow screw-plug placed in the side of the gun at the point where the pressure is to be taken. This instrument is probably the most accurate and delicate one ever invented for the purpose. In the experiments it recorded certain vibrations in the column of gases, which have been generally neglected by theorists on the subject, but which are of great importance to the life of the gun. It seems unfortunate that an instrument which promised so much should have been allowed to fall into disuse, if not almost oblivion.