Sales Products :: Electromagnetic
Geonics EM61-MK2
The EM61-MK2, an enhanced version of the patented EM-61, is a time domain metal detector which detects both ferrous and non-ferrous objects with excellent spatial resolution. Target response is a single, sharply defined peak, facilitating quick and accurate location. A single 200 litre (55 gal.) drum can be detected at depths greater than 3 metres. Modification for increased power, to increase both the sensitivity to smaller targets and depth of exploration is available.
Data from multiple time gates - three or four, user selectable - are recorded to provide a more complete measurement of the response decay rate for improved target characterisation (and discrimination). Early time gates improve the detection of smaller, as well as deeper targets; a mid-range time gate, at the same position as the original EM-61, offers comparison with, and continuation of original EM-61 data sets.
Data acquisition is supported by the DAS70CX field computer. Important features include real-time graphic display of data for review and quality control; high capacity data storage (removable flash memory) for extended survey time; increased rate of data collection; and additional input connections for simultaneous collection of EM and GPS data.
The system is immediately GPS compatible; a fully integrated Trimble AG114 - with no requirement for a separate GPS receiver console - is available as an option.
The system can be pulled as a trailer, in single or multiple unit configurations, or carried by an operator with a belt harness.
For applications in marine environments, the EM-61 (Submersible) is capable of data collection to depths of 60 metres below the surface of water.
Technical Specifications
| Measured Quantities | Four time gates of secondary response in mV |
| EM Source | Air-cored coil, 1 x 0.5 m size |
| Current Waveform | Uni-polar rectangular current with 25% duty cycle |
| EM Sensors | 1: Main: Air-cored coil, 1 x 0.5 m in size, coincident with EM source 2: Focusing: Air-cored coil, 1 x 0.5 m in size, 30 cm above main coil |
| Measuring Ranges | 10,000 mV |
| Dynamic Range | 18 bits |
| Output Monitors | 16-line graphic LCD with 24characters per line, and audio tone |
| Power Supply | 12 V rechargeable battery for 4 hour continuous use |
| Data Storage | 1GB Flash Memory card (removable) |
| Operating Weight & Dimensions | Backpack: 8 kg: Coil Assembly: 23 kg in trailer mode Back pack: 60 x 30 x 20 cm Coil 1: Bottom: 100 x 50 x 5 cm Coil 2: Top: 100 x 50 x 2 cm |
| Shipping Weight & Dimensions | 48 kg (74 kg with trailer) 106 x 61 x 33cm (box 1) 54 x 45 x 56 cm (box 2) with trailer option only |
DataSheets
EM61-MK2 Datasheet (PDF 1.1MB)
Electromagnetic Products
