galvanometer for pyrometer
Datecirca 1910
Inventory Number0251
ClassificationGalvanometer
Subject
Maker
Charles Féry
1865 - 1935
Cultural Region
Place of Origin
Dimensions19 × 18.5 × 18.5 cm (7 1/2 × 7 5/16 × 7 5/16 in.)
Material
DescriptionThis sensitive meter consists of a moving coil with short suspension. Two scales on dial: 0-1.6mV (electric current) and 0-1500°C (temperature). The meter is in a cylindrical brass case with four leveling screws underneath and glass top. The vertical tube is the actual brass suspension tube.
Signedon dial, script: Pyromètre Ch. Fery / N°. 118
FunctionA galvanometer is an instrument designed to measure the amount of electric current. This one was used with a pyrometer, such as 1998-1-0448.
A pyrometer is an instrument used for measuring the temperature of heat radiating substance. This measurement is based on the Stefan-Boltzmann law. Radiation heat would be focused on thermocouples found inside the pyrometer. These would produce a small electrical current picked up by the binding posts. That current would then be transmitted to a galvanometer such as this one. A reading of the electric current on the dial would directly give, from the second scale on this galvanometer, the temperature of the substance under study.
For a general discussion, go to the following website.
A pyrometer is an instrument used for measuring the temperature of heat radiating substance. This measurement is based on the Stefan-Boltzmann law. Radiation heat would be focused on thermocouples found inside the pyrometer. These would produce a small electrical current picked up by the binding posts. That current would then be transmitted to a galvanometer such as this one. A reading of the electric current on the dial would directly give, from the second scale on this galvanometer, the temperature of the substance under study.
For a general discussion, go to the following website.
ProvenanceFrom the Engineering School, Harvard University.
L. E. Knott Apparatus Company
Date: 1910-1930
Accessories: bell jar
Object number: 0189a,b
L. E. Knott Apparatus Company
Date: circa 1910
Object number: 0451
See also/See also
