Fast response temperature sensor using a polyimide enclosed RTD

Patent metadata

Field	Value
Publication number	US-10126178-B2
Application number	US-201414909314-A
Country	US
Kind code	B2
Filing date	Jun 17, 2014
Priority date	Aug 1, 2013
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A fast-responding RTD assembly is provided having a housing including a cage having at least one flow through aperture, a cover disposed over at least one of the housing and the cage, a thin-walled RTD member having a first polyimide tape layer, a second polyimide tape layer sandwiching first and second lead tabs, and a conductor extending between the lead tabs, the thin-walled RTD located within the housing and held in position by a support structure first and second leads extending to the thin-walled member and corresponding to the first and second leads tabs, the thin-walled RTD member being one of curvilinear, linear, circular and spiral and minimizing contact with the housing to minimize conduction error.

First claim

What is claimed is:

1. A resistance temperature detector (RTD) assembly, comprising:
a housing including a cage having at least one flow through aperture;
a cover disposed over at least one of said housing and said cage;
a thin film RTD member having a first polyimide tape layer, a second polyimide tape layer sandwiching first and second lead tabs and a conductor extending between said lead tabs;
said thin film RTD member located within said housing and held in position by a support structure;
first and second leads extending to said thin film RTD member and corresponding to said first and second leads tabs; and,
said thin film RTD member being one of cylindrical, planar, and spiral shape.

2. The RTD assembly of claim 1 , said support structure further comprising first and second posts.

3. The RTD assembly of claim 2 , said thin film RTD member extending between said first and second posts.

4. The RTD assembly of claim 3 , said first and second posts having slots for receiving said thin film RTD.

5. The RTD assembly of claim 2 further comprising third and fourth posts.

6. The RTD assembly of claim 5 , said posts having slots for receiving said thin film member.

7. The RTD assembly of claim 1 said support structure being a bellow.

8. The RTD assembly of claim 7 , wherein said thin film RTD member extends about said bellow.

9. The RTD assembly of claim 8 said bellow having a plurality of peaks and valleys minimizing contact with said thin film RTD.

10. The RTD assembly of claim 1 , said cage being substantially hollow.

11. The RTD assembly of claim 1 said cover further comprising a flange.

12. The RTD assembly of claim 1 , said thin film RTD member forming a spiral shaped structure.

13. The RTD assembly of claim 12 , said spiral shaped structure disposed within said cage.

14. The RTD assembly of claim 1 , said thin film RTD assembly being in electrical connection with a controller.

15. The RTD assembly of claim 1 , said housing having at least one hole for said leads.

Assignees

• Unison Ind Llc

Inventors

• Goedel Jarodd Dan

Classifications

• G01K1/08

  Protective devices, e.g. casings · CPC title

• G01K13/02

  for measuring temperature of moving fluids or granular materials capable of flow · CPC title

• G01K7/16 Primary

  using resistive elements · CPC title