Abstract: An improved heated junction thermocouple cable arrangement for use with a nuclear reactor heated junction thermocouple having sensors with an unheated thermocouple, a heated thermocouple, and a heater coil, shares power conductors between multiple heater coils. The thermocouple conductors are separated from the power conductors to eliminate the possibility of interference with the thermocouple conductor signals. The heater coils are ganged in parallel and if one heater coil fails, power is still supplied to the remaining heater coils connected to a pair of power conductors.

Abstract: The connector device comprises a male plug of stainless steel or the like having a housing containing a number of spaced passageways within which wire-bearing electrical conduits are hermetically secured. The device also includes a female receptacle of stainless steel or the like having an annular rim defining a central space within which the front end of the male plug is hermetically sealed. The female receptacle has a central passageway within which a multi-wire electrical conduit is hermetically secured. A dielectric wire spreader of polytetrafluoroethylene or the like is disposed in the central space with a frusto-conical front thereof abutting a dielectric spacer positioned against the conduit sealed in the female receptacle central passageway and with the rear end thereof abutting the front of the male plug. Passageways in the spacer and male plug rear end conduct conduit wires to the spreader where they are disposed in parallel surface grooves and interconnected.