Included Accessories: Backpack Electronics unit, Coils, Wheels, Cables, Data logger, DAT61 Software, Data transfer cable.

Suggested Optional Accessories: For automatic integration with GPS, we suggest the Trackmaker 61 software operating with the Trimble AG114 GPS unit.

The EM61 is a time-domain metal detector which detects both ferrous and non-ferrous metals. A powerful transmitter generates a pulsed primary magnetic field in the earth, which induces eddy currents in nearby metallic objects. The eddy current decay produces a secondary magnetic field measured by the receiver coil.

The EM61 detects a single 200-litre (55 gal) drum at a depth of over 3 metres beneath the instrument, yet is relatively insensitive to nearby cultural interference, such as fences, buildings and power lines. The response is a single, sharply defined peak, greatly facilitating quick and accurate location of the target. Depth of the target can usually be estimated from the width of the response.
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