Tradelab performs direct current shunts calibration with ENAC (ILAC) accreditation.
As a direct current shunt is essentially a resistance, its calibration consists of the determination of the resistance value and its uncertainty associated.
The electrical resistance is a magnitude that can vary with temperature, for this reason the calibration is carried out at different intensity values, within the range of use of the shunt, in order to evaluate the self-heating effect of the shunt.
The calibration is carried out by applying different DC current values and reading the voltage drop at the terminals of the shunt in a standard multimeter.