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US 6,977,575 B2Granted
Flexible averaging resistance temperature detector
AssigneeRTD Company
InventorPete Bernier
Life of this patent
Estimating the term…
Abstract
A temperature sensor. The sensor comprises a wire comprising a resistance temperature detector (RTD) sensing material wrapped around a flexible insulated metal core wire to form an assembly. A first end of the sensing wire is electrically connected to a first end of the core wire. The second end of the core wire provides a first lead, and an insulated lead wire is electrically connected to a second end of the sensing wire to provide a second lead. Shrink tubing encapsulates the assembly.
Claims21
A temperature sensor comprising:
- a wire comprising a resistance temperature detector (RTD) sensing material wrapped in a plurality of adjacent windings around a flexible core wire to form distributed adjacent windings insulated from the core wire and including separation between adjacent windings to form a flexible assembly, the wire including a first end and a second end and the core wire including a first core end and a second core end, the first end electrically connected to the first core end, the second core end providing a first lead;
- an insulated lead wire electrically connected to the second end of the wire to provide a second lead;
- a first layer of heat shrinkable tubing encapsulating at least the first end and the first core end;
- and
- a second layer of heat shrinkable tubing covering at least a portion of the first lead and second lead, wherein the first layer extends beyond the second layer.
2 more elements
A temperature sensor produced by the method comprising:
- wrapping a plurality of adjacent windings of a first wire comprising a resistance temperature detector (RTD) sensing material around a flexible core wire to form distributed adjacent windings insulated from the core wire and including separation between adjacent windings, creating a flexible wire wrapped assembly, the first wire including a first end and a second end and the core wire including a first core end and a second core end;
- electrically connecting the first end to the first core end;
- providing leads for the temperature sensor by electrically connecting a first insulated lead to the second end and using the second core end as a second lead of the temperature sensor;
- placing the wire wrapped assembly into a heat shrinkable polymer material, including providing a first and second layer of heat shrinkable tubing, wherein the second layer extends beyond ends of the first layer;
- and
- sealing at least the first end and the first core end of the temperature sensor by heating the polymer material.
3 more elements
A temperature sensor produced by the method comprising:
- wrapping a first wire comprising a resistance temperature detector (RTD) sensing material around a flexible core wire, creating a wire wrapped assembly;
- electrically connecting a first end to the first core end;
- providing leads for the temperature sensor by electrically connecting a first insulated lead to the second end and using the second end as a second lead of the temperature sensor;
- placing the wire wrapped assembly into a heat shrinkable polymer material, including providing a first and second layer of heat shrinkable tubing, wherein the second layer extends beyond ends of the first layer;
- and
- sealing the temperature sensor by heating the polymer material.
3 more elements
Dependencies are inferred from the claim text.