Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Patent
1987-05-22
1990-04-10
Cuchlinski, Jr., William A.
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
374163, 376247, 136211, 136212, 73295, G21C 1700
Patent
active
049155083
ABSTRACT:
A probe for measuring heat includes an elongate rod fitted within a sheath, and a plurality of annular recesses are formed on the surface of the rod in a spaced-apart relationship to form annular chambers that are resistant to heat flow. A longitudinal bore extends axially into the rod and within the cylinders defined by the annular chambers, and an integrated heater and thermocouple pack is dimensioned to fit within the bore. In construction, the integrated pack includes a plurality of wires disposed in electrical insulation within a sheath and a heater cable. These wires include one common wire and a plurality of thermocuple wires. The common wire is constructed of one type of conductive material while the thermocouple wires are each constructed of two types of materials so that at least one thermocouple junction is formed therein. All of the wires extend the length of the integrated pack and are connected together at their ends. The thermocouple wires are constructed to form thermocouple junctions proximate to each annular chamber for producing electromotive forces corresponding to the temperature of the rod within the annular chambers relative to outside the chambers. In the preferred embodiment, each thermocouple wire forms two thermocouple junctions, one junction being disposed within an annular chamber and the second junction being disposed outside of, but proximate to, the same annular chamber. In one embodiment two thermocouple wires are configured to double the sensitivity of the probe in one region.
REFERENCES:
patent: 4075036 (1978-02-01), Lysikov et al.
patent: 4298430 (1981-11-01), Rolstad et al.
patent: 4313792 (1982-02-01), Smith
patent: 4406011 (1983-09-01), Burns
patent: 4439396 (1984-03-01), Rolstad
patent: 4603580 (1986-08-01), Waring
patent: 4637913 (1987-01-01), Jacquot et al.
patent: 4725399 (1988-02-01), McCulloch et al.
Dial Ralph E.
Finnell Wilber K. R.
McCulloch Reg W.
Cuchlinski Jr. William A.
Delta M Corporation
Scanlon Patrick R.
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