Cal Enterprises Ltd

High current measurement capabilities(Using Hall effect current ratio box )

+/-0.2 % at 10Amps rising to +/- 0.5 % at 150 Amps direct current.
+/- 1.5 %  from 2 Amps to 20 Amps over the range 40Hz  to 3KHz
Hall effect devices give galanic isolation from the current source.

High currents are used in earth bonding testers.