Earth Resistivity Meter

[rael]

Hi,


The Geoscan Research RM-15, using four electrode area, make data file calculating resistance.
Resistance to resistivity calculation, needed for Double-Dipole and Wenner measurement, is maked by Geoplot-3 software.
The EPE RM make data file depending condition of ADC.
I think, combination of EPE RM and four electrode areas is not successful.
Ten EPE RM is not better than one RM-15!

Conversion of resistance to apparent resistivity:
Wenner Multiply R by 3.1415 for resistivity with d = 0.5
Double-Dipole Multiply R by 9.4245 for resistivity with d = 0.5
Twin (mobile = remote separation) Multiply R by 1.5708 for resistivity with d = 0.5
Twin (remote >> mobile spacing) Multiply R by 3.1415 for resistivity with d = 0.5


For more look:
http://www.cast.uark.edu/nadag/Educa...van/Bevan1.pdf
http://gozips.uakron.edu/~matney/Use...0GeoPlot3s.pdf




Regards

[sohailahmadsgdpk]

hi capinrita
did you managed to found pcb and schematic ... if yes can you please share that with me
[email protected]

[ishtar hunter]

Hi to all
I built Earth resistivity logger device but I have trouble functioning.
How I can test this device? i can not view my test resistor ohm's
I connect with c1 to p1 a 1 ohm resistor and of c2 to p2 also 1 ohm resistor & with p1 to p2 a 10 ohm resistor , but i can not view my test resistor ohm's to display . the low and high reading of ic 4a and 4b is Large Numbers. When we want to find an anomaly(scan ground) if the test button will be OFF or ON?