Miner resistivity
instrument
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A-200 is a geophysical
conductivity
instrument with its four spikes
having direct contact with the soil. It is used for locating
underground anomalies of caves, tunnels, graves, ancient walls,
metals, water.
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enlarge
How to use Miner A-200?
Drive four spikes
into the ground.
Connect wires into the
instrument's four terminals. Press TEST button (on). The green current output indicator
lamp is lit. The electrical
current is transmitted between electrodes.
Press TEST button (off) and read
the resistance value on display.
Sudden
decrease of the value on display is
high conductivity
(big metal, groundwater,
etc.).
Sudden
increase of the value on display is
low conductivity (or
non conductivity)
(cave, tunnel, void,
ancient wall,
etc.).
1) Twin probe (detection depth up to 2.5
metres)
In the example above, the target is located at Test 3 where the resistivity value on display have suddenly
increased.
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2
)
Wenner Array (detection depth up to 10 metres for archaeological applications)
