Danisense has launched a precision series of PCB-mount current transducers for isolated DC and AC current measurement up to 72A. Called DP, maximum linearity error is 10ppm and measurement resistance is up to 100Ω at full scale. They use the company’s closed-loop, compensated flux-gate technology (see below) with a fixed excitation frequency and second-harmonic zero ...

This story continues at Isolated PCB current measurement to 10ppm

Or just read more coverage at Electronics Weekly