The DUALEM-21/21S features a Dual-Geometry receiver array at distances of 2 meters and 1 meter from the transmitter, allowing simultaneous conductivity measurements at four depth levels: 0.5 meters, 1 meter, 1.6 meters, and 3.2 meters. Additionally, it can measure magnetic susceptibility (Magnetic Susceptibility) simultaneously in four values and detect metal.
DUALEM-21/21S Usage
The ability to measure at multiple depth levels enables analysis of the first 4 meters of soil depth.
It can be used for long-range surveys by a single operator.
Suitable for towing on a sled or low cart.
*SCMA is the sole distributor in Thailand.
DUALEM-21/21S Features
EM Arrays 1- and 2-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
Power8- to 16-V DC from harness module or external battery, draw about 3 W
Operating Dimensions 0.089-m diameter, 2.41-m length (3.5” by 95”)
Weights 8 kg operating, 24 kg shipping
Shipping Dimensions 2.55m x 0.18m x 0.18 m
Ancillary Items Data/power cable, software and documentation, hinged metal case. DUALEM-21 has a Bluetooth transceiver, controller and harness