Side-welded fast response sheathed thermocouple

Title: Side-welded fast response sheathed thermocouple

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Abstract

A method of fabricating the measuring junction of a grounded-junction sheathed thermocouple to obtain fast time response and good thermal cycling performance is provided. Slots are tooled or machined into the sheath wall at the measuring junction, the thermocouple wires are laser-welded into the slots. A thin metal closure cap is then laser-welded over the end of the sheath. Compared to a conventional grounded-junction thermocouple, the response time is 4 to 5 times faster and the thermal shock and cycling capabilities are substantially improved.

Inventors:: Carr, K.R.

OSTI Identifier:: 5468443

Assignee:: TIC; ERA-05-019268; EDB-80-050843

DOE Contract Number:: W-7405-ENG-26

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION; 22 GENERAL STUDIES OF NUCLEAR REACTORS; JUNCTIONS; DESIGN; THERMOCOUPLES; CANNING; CLOSURES; ELECTRIC CABLES; FABRICATION; LASER WELDING; MACHINING; MEASURING METHODS; REACTOR COMPONENTS; RESPONSE FUNCTIONS; THERMAL CYCLING; TIME RESOLUTION; WALLS; CABLES; CONDUCTOR DEVICES; ELECTRICAL EQUIPMENT; EQUIPMENT; FUNCTIONS; JOINING; MATERIALS WORKING; MEASURING INSTRUMENTS; RESOLUTION; TIMING PROPERTIES; WELDING; 440300* - Miscellaneous Instruments- (-1989); 220200 - Nuclear Reactor Technology- Components & Accessories

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                    Carr, K.R. Side-welded fast response sheathed thermocouple.  United States: N. p.,  
        Web.

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                    Carr, K.R. Side-welded fast response sheathed thermocouple.  United States.

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                    Carr, K.R. .  
        "Side-welded fast response sheathed thermocouple".  United States.

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@article{osti_5468443,

  title        = {Side-welded fast response sheathed thermocouple},

  author       = {Carr, K.R.},

  abstractNote = {A method of fabricating the measuring junction of a grounded-junction sheathed thermocouple to obtain fast time response and good thermal cycling performance is provided. Slots are tooled or machined into the sheath wall at the measuring junction, the thermocouple wires are laser-welded into the slots. A thin metal closure cap is then laser-welded over the end of the sheath. Compared to a conventional grounded-junction thermocouple, the response time is 4 to 5 times faster and the thermal shock and cycling capabilities are substantially improved.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {},

  month        = {}

}

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Side-welded fast response sheathed thermocouple

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A method of fabricating the measuring junction of a grounded-junction sheathed thermocouple to obtain fast time response and good thermal cycling performance is provided. Slots are tooled or machined into the sheath wall at the measuring junction, the thermocouple wires are laser-welded into the slots. A thin metal closure cap is then laser-welded over the end of the sheath. Compared to a conventional grounded-junction thermocouple, the response time is 4--5 times faster and the thermal shock and cycling capabilities are substantially improved. 1 fig.
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