The Flux Meter consists of a flux meter whose rated frequency is equal to that of the local ac power network. Its range is 0-100 μWb, with a peak value of 1000 μWb. It has an instantaneous flux output of 1mV/μWb (10-1000 Hz).

The probe of the flux meter has 375 turns, with an inside dimension of 25.4 x 25.4 mm (1.0 x 1.0 in) and a cable length of 90 cm (36 in).