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Title: High temperature measuring device

Patent ·
OSTI ID:864566

A temperature measuring device for very high design temperatures (to 2,000.degree. C.). The device comprises a homogenous base structure preferably in the form of a sphere or cylinder. The base structure contains a large number of individual walled cells. The base structure has a decreasing coefficient of elasticity within the temperature range being monitored. A predetermined quantity of inert gas is confined within each cell. The cells are dimensionally stable at the normal working temperature of the device. Increases in gaseous pressure within the cells will permanently deform the cell walls at temperatures within the high temperature range to be measured. Such deformation can be correlated to temperature by calibrating similarly constructed devices under known time and temperature conditions.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
DOE Contract Number:
EY-76-C-06-1830
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 4386049
OSTI ID:
864566
Country of Publication:
United States
Language:
English