Thermocouple and method of making the thermocouple and of mounting the thermocouple on a heat exchanger tube
An improved thermocouple and method for making the thermocouple and installing same on the fireside of heat exchanger tubes or the like for monitoring surface temperature which includes a thermocouple assmebly made from mineral oxide insulated metal sheathed thermocouple wires where a pair of thermocouple wires or conductors extend throught a metal sheath in spaced apart and insulated relation from each other and from the sheath and are connected together at an end to define a hot junction menber adapted to be mounted in engagement with the surface being measured, which hot junction is defined by a disk or bar-shaped member extentind from the end of the sheated conductor assembly beyond the insulation and sheathe but not in contact with the sheath. Installation on a heat exchanger tube includes welding the sheath to the tube which pressurizes the hot junction against the temperature measured surface and defines a heat energy path that bypasses the hot junction.
- Assignee:
- EDB-85-079903
- Patent Number(s):
- US 4477687
- OSTI ID:
- 5698397
- Country of Publication:
- United States
- Language:
- English
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