CRYOGENIC TEMPERATURE MEASURING RESISTOR ELEMENT

摘要

Provided is a cryogenic temperature measuring resistor element including a metallic temperature measuring resistor wire, an electric insulator made of a polycrystalline ceramic material, and a filler filled between the electric insulator and the temperature measuring resistor wire. The filler includes polycrystalline inorganic electric insulating powder, particles of the insulating powder being connected by glass. The glass has a lower softening point than respective melting points of the inorganic electric insulating powder, the temperature measuring resistor wire, and the electric insulator.

主权项

1. A cryogenic temperature measuring resistor element, comprising a temperature measuring resistor wire, a housing for accommodating the temperature measuring resistor wire in an interior thereof, and a filler filled between the housing and the temperature measuring resistor wire,
wherein the filler includes a mixture of polycrystalline inorganic electric insulating powder and glass powder of an amorphous electric insulating material having a lower softening point than respective melting temperatures of the inorganic electric insulating powder, the temperature measuring resistor wire, and the housing, and the mixture having been filled between the housing and the temperature measuring resistor wire, and been heated at a temperature higher than the softening point of the glass powder and lower than the respective melting temperatures of the temperature measuring resistor wire, the housing, and the inorganic electric insulating powder so as to melt only the glass powder, and been cooled to thereby solidify the glass.