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We design, manufacture and deliver geological prospecting and exploration equipment and software
We design, manufacture and deliver geological prospecting and exploration equipment and software

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RMT-C system

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on request
Item ID: rmt-k

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Radiomagnetotelluric sounding with a controlled source (CSRMT) is used in outlands where it is hard to get enough signals of radio stations in 10-1000 kHz frequencies range. The use of controlled source enables to lower frequencies minimum and reach the depths of investigation of 150-200 m, compared to 50m with RMT system. Graphs of resistivity and phase of the impedance distribution are shown as a result of measurements.

CSRMT is used:

  • To perform rapid geological investigations,
  • To search for mineral deposits,
  • Hydrogeological investigations,
  • Engineering investigations,
  • Ecological investigations.

The main features of the system are:

  • Possibility to record time sequences or magnetic and electric fields’ spectrograms;
  • Fast data quality control;
  • Possibility to save observed data to built-in memory or external PC.

Measuring the potential on 3-4 main frequencies of the source in 1-150 kHz range and their subfrequencies (7-9 of each frequency) allows to get detailed information about potential distribution on depths starting from 1-2 m up to 150-200 m. About 50 RMT-C points could be done per day, what is approximately 5 times faster than performing VES to similar depths.

Recorder M-K5-SM25:
Number of synchronous channels 5
ADC 16 bits
Range of input signals ± 1000 mV
Frequency range 1-1000 kHz
Sampling rates 39, 312, 832, 2496 kHz
Built-in memory not less than 4000Mbytes
Data unloading channel Ethernet
Display LCD, monochrome, 320 x 240 pixels
Keypad 18 keys
GPS support YES
Volume of the built-in 12 V accumulator 5 А*hours
Voltage of power supply, V 11…15
Resource (on the built-in accumulator) not less than 8 h
Operation temperature range -20 … +50 °С
Dimensions 340 x 295 x155 mm
Weight 5 kg
Magnetic sensor:
Frequency range 1-1000 kHz
Transfer constant 20 mV/nT
Dimensions 32 mm (diameter) / 220 mm (length)
Weight 0.3 Kg
Voltage of external power supply 7-10 V
Current consumption 5 mA
Cable length 4 m
Preamplifier
Frequency range 1-1000 kHz
Input resistance 2 MOhm
Voltage of external power supply 7-10 V
Cable length 4 m
GTS-1 transmitter:
Output voltage 1-288 V
Maximum output power 0.9 kW
Maximum output current 7.5 A
Standard source grounded electric dipole of various length
Signal type rectangular signal with mutable on/off ratio
Frequency range 0.1 Hz – 1000 kHz
Display LED, monochrome, 85x18 mm
Keypad 18 keys
Control type via keypad or external PC
Power supply 220 V, 50 Hz
Internal output voltage and current sensors +
Operation temperature range -10 … +50 °С
Dimensions 450x315x140 mm
Weight 11 kg
All year round
worldwide
Surveys
marin, land, borehole
1D, 2D, 3D, 4D
investigations