G - Physics – 01 – F
Patent
G - Physics
01
F
340/140
G01F 1/68 (2006.01) G21C 17/032 (2006.01)
Patent
CA 2035791
PATENT 55,487 PD-9972 ABSTRACT OF THE DISCLOSURE A sensor assembly comprising a rod-shaped thermally conductive element oriented radially with respect to a flow pipe and two or more thermocouples installed on the thermally conductive element. A first end of the thermally conductive element is arranged in contact with or in thermal communication with the outer periphery of the pipe, while a second end of the thermally conductive element is spaced from the pipe. As a result of heat conduction through the pipe to the first end, a temperature gradient is provided across the thermally conductive element. The temperature gradient exhibits a relatively high temperature near the first end and a relatively low temperature near the second end. The thermocouples are installed along the length of the thermally conductive element. One thermocouple is arranged nearer to the pipe than the other thermocouple. Temperature dependent signals obtained from the thermocouples are transmitted to suitable evaluation electronics. The evaluational electronics determines a temperature difference between the two thermocouples based on the thermocouple signals. The temperature difference is then compared with known or preset values to determine the flow status of the pipe.
Barton Serge P.
Bereskin & Parr
Westinghouse Electric Corporation
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