Sales Products :: Electromagnetic
Promis Multi Frequency EM System
The Promis is a modern implementation of the Slingram technique which uses a coil to produce a primary magnetic field, this is linked by a cable to a receiver sensor at distances between 20 and 200m. The receiver coil measures 3 in-phase components and one out of phase component of the secondary magnetic field induced by ground conductors. Traditional Slingram type techniques only measure the vertical component of the magnetic field, but by measurement of the two additional horizontal components the Promis is able to give information on the strike of any conductive structure that has been intercepted. Penetration depths are determined both by Tx-Rx coil separation and frequency recorded but a rule of thumb is penetration is approximately 1/2 of the inter-coil separation.
3 Component EM system for sounding and profiling:
- 10 frequencies
- Transmitter Receiver spacing from 20m to 200m (400m, optional)
- Measurement of 3 Magnetic field components; Hz, Hx and Hy
- Simple operation
Applications:
Mapping conductive dykes and mineral veins.
Fracture zones for ground water exploration.
Technical Specifications
| Transmitter | 10 frequencies from 110 to 56,320 Hz, Power supply, NiMh battery belt Magnetic moments with standard 75cm coil: -360 Am² @ 110 Hz -320 Am² @ 220 Hz -280 Am² @ 440 Hz -235 Am² @ 880 Hz -220 Am² @ 1760 Hz -160 Am² @ 3520 Hz -110 Am² @ 7040 Hz -60 Am² @ 14,080 Hz -30 Am² @ 28,160 Hz -15 Am² @ 56,320 Hz Note: these can be doubled when using the optional 1.3m diameter transmitter coil. |
| Weights | Console: 5.8 kg: 75 cm dia coil: 7kg, battery belt: 4 kg |
| Receiver | Four simultaneous data channels, 3 magnetic components + current Resolution: 0.01% of primary field Dynamic range, 24 bits Notch filter: 50Hz Memory, sufficient for 20,000 readings @ 10 frequencies Temperature range: -20° to + 70°C Power source, Internal rechargeable NiMh Serial/USB data output port |
| Weights | Console: 5 kg, magnetic sensor: 2.6 kg |
DataSheets
Promis Datasheet (PDF 350KB)
Electromagnetic Products
