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Earth Resistivity Meter

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  • #31
    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

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    • #32
      hi capinrita
      did you managed to found pcb and schematic ... if yes can you please share that with me
      [email protected]

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      • #33
        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?

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