High resolution multiplex electrode electrical resistance tomographic system

Technical Specifications: DZD-6A survey & control unit Measuring voltage range: -6000mV~+6000mV Measuring voltage resolution: 0.01mV Measuring voltage accuracy: (at Vp>10mV)±5%, ±1 digit; (at Vp>10mV)±1%, ±1 digit Measured apparent polarizability accuracy: ±1%, ±1 digit Measuring current range: 0~5000mA Measuring current resolution: 0.01mA Measuring current accuracy: (at Ip>10mA)±5%, ±1 digit; (at Ip>10mA)±1%, ±1 digit Input impedance: >50M ohm Interference suppression on