IGIS make - Model DDR3 -Resistivity Meters

The DDR 3 Resistivity Meter is a specialized version of IGIS Resistivity meters designed for use in Resistivity surveys up to about 200m depth. It utilizes rechargeable batteries as power source to energize the ground thus eliminating the necessity of using the relatively expensive dry cells. The equipment consists of two separate comportment-one for reading the current (G-Unit) and the other for directly reading the resistance/the potential (M-Unit), both housed in a single box. The equipment, powered by a 24V rechargeable battery can send highly stabilized currents up to 200 mA and read the resulting potential with a 100 micro volts resolution or ground resistance directly with 50 micro ohms resolution.