Side-welded fast response sheathed thermocouple
Patent
·
OSTI ID:863801
- Knoxville, TN
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4251908
- OSTI ID:
- 863801
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
side-welded
fast
response
sheathed
thermocouple
method
fabricating
measuring
junction
grounded-junction
obtain
time
thermal
cycling
performance
provided
slots
tooled
machined
sheath
wall
wires
laser-welded
metal
closure
cap
compared
conventional
4-5
times
faster
shock
capabilities
substantially
improved
substantially improved
thermal shock
thermal cycling
response time
fast response
thermocouple wires
times faster
measuring junction
substantially improve
sheathed thermocouple
closure cap
thermocouple wire
time response
cycling capabilities
cycling performance
/136/420/
fast
response
sheathed
thermocouple
method
fabricating
measuring
junction
grounded-junction
obtain
time
thermal
cycling
performance
provided
slots
tooled
machined
sheath
wall
wires
laser-welded
metal
closure
cap
compared
conventional
4-5
times
faster
shock
capabilities
substantially
improved
substantially improved
thermal shock
thermal cycling
response time
fast response
thermocouple wires
times faster
measuring junction
substantially improve
sheathed thermocouple
closure cap
thermocouple wire
time response
cycling capabilities
cycling performance
/136/420/