Uncertainty Analysis of an Electric Field Mill Calibration System

Abstract: We present the uncertainty analysis for an electric field mill calibration system used at the Sandia Primary Standards Laboratory. The uncertainty analysis incorporates contributions from DC voltage supplied by a high voltage amplifier; the distance between an electrically isolated charge plate and the ground plate of a stainless steel test structure; type A measurement uncertainty; and uncertainty associated with operator variation, including cable arrangement, electrical connections, and the angle at which the field mill is loaded into the test structure.