The DUALEM-1 has 1-m separation between its transmitter and dual receivers, so its dual depths of conductivity measurement are 0.5 m and 1.6 m (by the 70-% cumulative-sensitivity guideline). In-phase measurements sound magnetic susceptibility and detect metal.
The DUALEM-1 depths of measurement are ideal for many agricultural applications, and spatial resolution that is well suited to archaeological investigation. For metal detection, the DUALEM-1 can detect a steel drum to a depth of about 1 m.
The compact size of the DUALEM-1 makes it convenient for towing on a sled or carrying from station-to-station for on-ground measurements. The DUALEM-1S sensor is available separately at lower price for integration with the user’s own surveying systems.
| Feature | Description |
|---|---|
| EM Arrays | 1-m horizontal co-planar (HCP) and perpendicular (PRP) transmitter-receiver arrays, operating at 9 kHz |
| Measured EM Quantities | HCP apparent conductivity and in-phase PRP apparent conductivity and in-phase |
| Measuring Ranges | Conductivity: -1000 to +1000 mS/m, 0.1 mS/m resolution In-phase: -300 to +300 ppt, 0.01 ppt resolution |
| Data Rates | 1 Hz standard, optional rates include 0.1-, 5- and 10-Hz |
| Integrated Components | Digital signal processor, GPS receiver, indicator LEDs, RS-232 port, thermometers, Wi-Fi transceiver |
| Power | 8- to 16-V DC from harness module or external battery, draw about 3 W |
| Operating Dimensions | 0.089-m diameter, 1.41-m length (3.5” by 56”) |
| Operating Weights | 5 kg operating for DUALEM-1S, 7 kg for DUALEM-1 |
| Shipping Dimensions | 1.6m x 0.2m x 0.2m |
| Shipping Weights | 8 kg for DUALEM-1S, 12 kg for DUALEM-1 |
| Ancillary Items | Data/power cable, software and documentation, shipping tube. DUALEM-1 has a Bluetooth transceiver, controller and harness in a shipping box |
