10 milliohm rheostat for lowest decade, 20 microohm resolution

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A 10 milliohm rheostat with 20 microohm resolution is an option for the HARS-LX Series.

For high-resolution applications, a 10 mΩ rheostat may be added for the lowest step of the decade resistor. The rheostat is a 20 µΩ resolution “decade”. In order to eliminate contact resistance and thermal emf, the HARS-LX integrates the rheostat in such a way that the wiper is in the low potential circuit. As a result, voltage and contact resistance effects are removed by being effectively added to the input impedance of the measuring instrument.