Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1988-05-02
1991-02-19
Reynolds, Bruce A.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
338 22R, 219544, 73292, 374185, 374204, H01C 710
Patent
active
049947800
ABSTRACT:
An extended resistance temperature sensor formed of a plurality of lengths of pre-insulated resistance temperature detector (RTD) wire. The RTD wire is either unheated, self heated or is heated by means of strands of heater wire integrated with or placed closely adjacent to the RTD wire. The RTD wire itself, or together with the heater wire, is bonded together in one embodiment. Alternatively the RTD wire, or with the heater wire, may be encased in insulated shrink tubing, thin wall metal tubing or both. Connectors are provided to supply electrical current for heating purposes or to connect the RTD wire to detection circuitry, or both. Protective sheaths are provided over the connectors.
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Fluid Components, Inc.
Lateef M.
Reynolds Bruce A.
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