Calibration scheme for Allen–Bradley resistors, 4.2–100 K

Abstract

Based on measured R–T data for ten tempered Allen–Bradley resistors (BB, (1)/(8) W, 1 kΩ), a four-point-calibration scheme is described that yields ΔT/T≤0.5% (≤0.8%, 55–65 K) in the range 4.2–100 K. The procedure involves three successive approximations to the equation log R=A+BT−P.