DDR-3

DDR-3

The DDR 3 Resistivity Meter is a specialized version of IGIS resistivity 
meters designed for use in resistivity surveys upto about 150m depth under 
geophysical favourable field conditions. 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 
comportments-one for reading the current (G.Unit) and the other for directly 
reading the resistance/the potential (P-Unit), both housed in a single box.
The equipment, powered by a 24V rechargeable battery can send highly 
stabilized currents upto 200mA and read the resulting potential with a 100 
micro volts resolution or ground resistance directly with 50 micro ohms 
resolution.
Housed in sturdy Aluminum box fixed in a briefcase, the instrument provides 
highly reliable digital outputs of ground resistance during field surveys and 
finds extensive use in ground water exploration, dam site investigation, 
delineation of geological structural features and in several other related 
problems.