Sales Products :: Electromagnetic
Geonics EM38-MK2
The EM38 is designed to be particularly useful for agricultural surveys measuring soil salinity, and can cover large areas quickly without needing grounded electrodes. Based on the same patented induction principle as the EM31, the EM38 provides depths of exploration of 1.5 meters and 0.75 meters in the vertical and horizontal dipole modes respectively.
Very lightweight and only one metre long, the EM38 provides rapid surveys with excellent lateral resolution. Measurement is normally made by placing this instrument on the ground and recording the meter reading. Digital meters are located on the top and the side of the EM38 for the horizontal and vertical dipole measurements. Continuous or station measurements can also be taken from a standing position using the optional carrying handle with trigger and cable for connection to the Allegro data logger. In this mode of operation 3000 data points can easily be obtained in one hour.
The EM38 has proven very useful in many geotechnical applications such as in archaeology where use can also be made of the in-phase component giving a measurement of the soil magnetic susceptibility.
The new EM38 Mk2 allows simultaneous output of both Quad and in-phase data.
NEW: EM38-MK2, measures 2 coil separations AND Q and I phase simultaneously.
Technical Specifications
| Measured Quantities | 1: Apparent conductivity in millisiemens per metre (mS/m) 2: In-phase ratio of the secondary to primary magnetic field in parts per thousand (ppt) |
| Primary Field Source | Self-contained dipole transmitter |
| Sensor | Self-contained dipole receiver |
| Intercoil Spacing | 1 metre(additionally 0.5m on EM38 Mk2-2) |
| Operating Frequency | 14.6 kHz |
| Power Supply | 9V PP3 battery |
| Measuring Ranges | Conductivity: 100, 1000 mS/m In-phase: +/- 29ppt |
| Measurement Resolution | +/- 0.1% of full scale |
| Measurement Accuracy | +/- 5% at 30 mS/m |
| Noise Levels | Conductivity: 0.5 mS/m In-phase: 0.02ppt |
| Battery Life | 25 hours continuous |
| Dimensions | Instrument: 106 x 15 x 3.6 cm Shipping Case: 117 x 19x 13 cm |
| Weight | Instrument: 3 kg Shipping: 10 kg |
| Data output | Serial and Bluetooth |
DataSheets
EM38-MK2 Datasheet (PDF 332KB)
Electromagnetic Products
