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Method to manufacture wire measurement resistor Place of their connection is divided with a frame at the ratio close according to the proposed ratio of temperature resistance coefficients (TRC) of materials of sections wire produced by temperature characteristics of annealing. The temperature dependence of resistance is adjusted by means of winding the wire off the frame. They perform thermal treatment of the resistor to produce the specified TRC of resistive sections of various sign, adjusting the mode of thermal treatment. They determine the ratio of the TRC values in sections and alternate winding of wire off them, using intermediate measurements of section resistances, they provide for compliance with the following ratios: R=R1+R2, where α1 α2 - TRC of sections; R1, R2, ρ1; ρ2 - their electric and specific resistances; n, m - number of turns in the first and second sections; R - total electric resistance of the resistor, so that in process of winding to preserve the established proportion of section turns, providing for the TRC of the resistor equal to zero and bringing its total resistance to the nominal value. |
Another patent 2513919.