Claims
- 1. A temperature sensor comprising:
a wire comprising a resistance temperature detector (RTD) sensing material wrapped around a second flexible insulated core wire to form an assembly, and wherein 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 providing a first lead; an insulated lead wire electrically connected to a second end of the sensing wire to provide a second lead, the connection having a junction; and shrink tubing encapsulating the assembly.
- 2. The sensor of claim 1, wherein the height of the sensor is about one-twentieth of an inch.
- 3. The temperature sensor of claim 2, wherein the core wire includes braided strands of conductive metal.
- 4. The temperature sensor of claim 3, wherein the core wire includes woven fiber glass insulation over the braided strands.
- 5. The temperature sensor of claim 4, wherein the wire comprising a sensing material includes one, or a combination of platinum, nickel, a nickel-iron alloy, and copper.
- 6. The temperature sensor of claim 5, wherein the electrical connections to the wires are made using one of soldering and brazing.
- 7. The temperature sensor of claim 6, wherein the sensor further comprises a strain relieving banding strap over the core wire and the second lead wire.
- 8. The temperature sensor of claim 7, wherein the banding strap includes brass.
- 9. The temperature sensor of claim 8, wherein the banding strap includes steel.
- 10. The temperature sensor of claim 9, wherein the banding strap is crimped around the core wire and the insulated lead wire.
- 11. The temperature sensor of claim 10, wherein the first and second lead wires exit the sensor at the same end.
- 12. The temperature sensor of claim 11, wherein an insulated lead wire is electrically connected to the second end of the core wire to provide the first lead.
- 13. The temperature sensor of claim 12, wherein a second banding strap is placed around the first and second lead wires.
- 14. The temperature sensor of claim 12, wherein the insulated wire leads withstand a five-pound pull force without separating from the assembly.
- 15. A temperature sensor produced by the method comprising:
wrapping a first wire comprising a resistance temperature detector (RTD) sensing material around a flexible insulated core wire, creating a wire wrapped assembly; electrically connecting a first end of the sensing wire to the first end of the core wire; providing leads for the temperature sensor by electrically connecting a first insulated lead to the second end of the sensing wire and using the second end of the core wire as a second lead of the temperature sensor; placing the wire wrapped assembly into a heat shrinkable polymer material; and sealing the temperature sensor by heating the polymer material.
- 16. The method of claim 15, wherein providing leads includes electrically connecting a second insulated lead to the second end of the core wire.
- 17. The method of claim 16, wherein the method further includes providing mechanical strain relief for the first and second leads.
- 18. The method of claim 15, wherein placing the wire wrapped assembly into a heat shrinkable polymer material includes providing a first and a second layer of heat shrinkable tubing, wherein the second layer extends beyond ends of the first layer.
- 19. The method of claim 18, wherein the first layer is heated before the assembly is placed into the second layer.
- 20. The method of claim 15, wherein electrically connecting to the sensing wire includes one of soldering and brazing.
CROSS-REFERENCE TO RELATED APPLICATION(S)
[0001] This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application Ser. No. 60/472,972, filed May 22, 2003.
Provisional Applications (1)
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Number |
Date |
Country |
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60472972 |
May 2003 |
US |