Hardware-software complex electromagnetic soundings

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Hardware-software complex electromagnetic soundings, for research and monitoring of natural and man-made processes and systems.

The complex is a set of equipment for electromagnetic sounding, field and laboratory research and monitoring of natural and man-made processes and systems.

The complex includes:

1. Equipment audio magnetotelluric sounding (MK4-SM27)

Audiomagnetotelluric sounding equipment (M-K4-SM27) is designed for electric survey method audiomagnetotelluric soundings on the basis of measurements of the electric and magnetic induction of the natural electromagnetic field.

Application area

Regional geophysical investigations, the search for oil and gas structures and deep-seated ore deposits, prospecting and exploration of gold, mapping fault zones and identifying kimberlite pipes, monitoring the state of storage of radioactive and chemical waste, hydrogeological, geotechnical and geothermal research, monitoring of geodynamic processes and prediction of earthquakes. 

Technical characteristics of the apparatus M-K4-SM27

  • Number of synchronous measurement channels – 4.
  • Bit analog-to-digital converter – 24 bits.
  • Common frequency range: lower limit of 0.1 Hz, the upper limit of 800 Hz.
  • Internal memory – 4 096 MB.
  • The capacity of the internal battery - 8 A⋅h.
  • Power supply voltage in the range: the lower limit of 10.5, the upper limit of 15.
  • Battery life (the built-in battery) – 14 hours.
  • Operating temperature range: lower limit of -20°C, the upper limit of 50°C.
  • Dimensions – 340 x 295 x 152 mm ± 10%.
  • Weight – 7 kg.

Technical characteristics of the magnetic antenna 

  • Frequency range: lower limit of 0.1 Hz, the upper limit of 1 000 Hz.
  • The conversion factor of magnetic induction in the signal voltage:
    • o for the frequency range 0.5-1000 Hz – 80 mV / nT;
    • o for the frequency range of 0.1-0.5 Hz – 160 mV / (nT⋅Hz).
  • Dimensions:
    • o diameter – 70 mm;
    • o length – 1 110 mm.
  • Weight – 5 kg.
  • The voltage of the external power supply – from 8 V to 10 V.
  • Current consumption – 30 mA.
  • The length of the connecting cable – 5 m. 

Technical characteristics of the pre-amplifier for summer jobs 

  • Frequency range: lower limit of 0.1 Hz, the upper limit of 1 000 Hz.
  • Input impedance – 2 megohms ± 0.2.
  • Input capacity – 150 ± 10 pF (pico Farad).
  • The level of intrinsic noise for frequencies 10 Hz – 14 nV / √Hz.
  • The voltage of the external power supply – from 8 V to 10 V.
  • Cable length – 3 ± 0.5 m. 

Technical characteristics of the pre-amp for winter work 

  • Frequency range: lower limit of 10 Hz, the upper limit of 1000 Hz.
  • Input impedance – 40 ± 5 MW.
  • Input capacity – 50 ± 5 pF.
  • The level of intrinsic noise at frequencies – greater than 10 Hz, 14 nV / √Hz.
  • The voltage of the external power supply – from ± 8 V to ± 10 V.
  • The length of the connecting cable – 3 ± 0.5 m.

The equipment package

  • Receiver – 1 pc.
  • Calibration loop with a calibration device – 1 pc.
  • The power supply cable – 1 pc.
  • Ethernet cable – 1 pc.
  • Receiving the electric lines (50 ± 2 x 4 m) – 1 pc.
  • Lead electrodes – 5 pcs.
  • Magnetic antenna cables – 2 pcs.
  • Receiving the electric lines (length 100 ± 5 meters x 4), non-contact – 1 pc.
  • Pre-amplifier for summer jobs – 1 pc.
  • Pre-amplifier for winter work – 1 pc.

2. Radio magnetotelluric sounding equipment, foot option (MK5-SM25F)

The equipment is designed for electric survey method radiomagnitotelluricheskogo sensing with measurements of radio field and controlled source (generator) based on measurements of the electric component of the electromagnetic fields of remote radio stations and own generator.

Application area

Geological mapping, exploration, hydrogeological and engineering-geological surveys, environmental studies (oil pollution mapping, delineation and study of the structure of landfills and industrial waste, leak detection.

Technical characteristics of the apparatus M-K5-SM25F

  • Channels synchronous measurements – 5.
  • Frequency range: lower limit of 10 kHz, the upper limit of 1000 kHz.
  • Memory – 4 096 MB.
  • GPS support.
  • built-in battery capacity – 5 A⋅h.
  • Power supply – from 10.5 V to 15 V.
  • Battery life (the built-in battery) – 6:00.
  • Operating temperature range: lower limit of -20°C, the upper limit of 50°C.
  • Dimensions – 340 x 295 x 155 mm, ± 10%.
  • Weight – 5 kg. 

Technical characteristics of the magnetic antenna

  • Frequency range: lower limit of 10 kHz, the upper limit of 1 000 kHz.
  • Noise floor – 25 fT / √Hz.
  • The conversion factor of magnetic induction in the signal voltage of 20 mV / nT.
  • Dimensions: diameter – 32 mm, length – 210 mm, weight – 0.3 kg.
  • The voltage of the external power supply – 7 V to 10 V.
  • Current consumption – 5 mA.
  • Cable length – 3 ± 0.5 m. 

Technical characteristics of the preamplifier

  • Frequency range: lower limit of 10 kHz, the upper limit of 1 000 kHz.
  • Input impedance 2 megohms ± 0.2.
  • The voltage of the external power supply – from 8 V to 10 V.
  • Cable length – 3 ± 0.5 m. 

The equipment package

  • Receiver – 1 pc.
  • Receiver power supply cable – 1 pc.
  • Ethernet cable – 1 pc.
  • Pre-amplifier electrical conduits – 1 pc.
  • Set of grounded foster electric lines (10 ± 0.5 x 4 m) with brass electrodes (5 pcs. electrodes) – 1 pc.
  • Set contactless receiving electric lines (10 ± 0.5 m x 4) – 1 pc.
  • Magnetic antenna with cable – 3 pcs.
  • Aerial table with a tripod – 1 pc.

3. The generator electroprospecting high-frequency GHF-1

The generator is designed to work as part of a set of equipment radiomagnitotelluricheskih soundings with controlled source. The generator is powered by a single-phase AC voltage of 220 V with a frequency of 50 Hz to a load resistance of 10-1 000 ohm. 

Technical characteristics of HFO-1 generator:

  • Output voltage – 285.
  • Output current in the range: the lower limit of 100 mA, the upper limit of 7.5 A.
  • Output power (at resistance load up to 100 ohms) – 0.9 kW.
  • Load resistance in the range: the lower limit of 10 ohms, the upper limit of 1000 ohms.
  • Generator operation - alternating current (square wave).
  • Frequency range: lower limit of 0.1 Hz, the upper limit of 1 MHz.
  • Manage frequency, duty cycle and amplitude of the signal from the front panel of the generator and an external computer (communication cable to the computer).
  • Built-in display with a functional keypad to set the measurement mode.
  • Dimensions – 450 x 415 x 140 mm.
  • Weight – 11 kg.
  • Power consumption – 1.5 kW.
  • Operating temperature range: lower limit of -10oC, the upper limit of 40oC.
  • Power supply – - 220 ± 20 V AC frequency – 50 Hz ± 2.
  • Pre-installed generator software, supporting all of the above functions.

The instrument set includes:

  • The communication cable to the host computer, an RS-232 - USB – 1 pc.
  • The cable for connecting an external power supply – 1 pc.
  • The connection cable to the external load – 1 pc.
  • Equivalent external load (load resistance in the range): the lower limit of 50 ohms, the upper limit of 100 Ohm), 1 pc.
  • Software GIK generator on an electronic medium – 1 set.

4. Georadar OKO-2  

Georadar or Ground Penetrating Radar (GPR) is the modern geophysical device intended for detection of various objects, including non- metal in various environments. Georadars are used for the solution of engineering-geological, hydrogeological and other geotechnical tasks , such as: 

I. Studying of a geological structure and geological section of the territory:

  • definition of water table depth;
  • mapping of karst and landslide structures;
  • studying of a frozen soils , mapping of talik. 

II. Inspection of water areas:

  • determination of depth and profile of a bottom of the rivers and lakes;
  • determination of thickness of ice;
  • detection of the flooded objects;
  • mapping of power of benthonic deposits (silt, sapropel). 

III. Inspection of runways, automobile and railroads:

  • determination of thickness and type of constructive layers of road clothes;
  • definition of nature of reinforcing of a hard coating (frequency and depth of laying of fittings);
  • detection of defects in a hard coating;
  • inspection of the spreading soil with allocation of zones of a razuplotneniye, the increased humidity, etc.;
  • search of underground communications. 

VI. Inspection of building constructions:

  • determination of thickness of walls and interfloor overlappings;
  • definition of nature of reinforcing (frequency and depth of laying of fittings);
  • detection of an electrical wiring and the pipes laid along building constructions;
  • detection of defects in building constructions. 

V. Tasks of environmental protection:

  • mapping of oil pollution of soil;
  • mapping of buried sites of grounds of industrial and technical and household waste. 

VI. Tasks in the field of archeology:

  • mapping of the buried bases and walls of ancient settlements;
  • detection of archaeological objects. 

Technical characteristics 

Power supply: from the built-in 3.8 a/h accumulator or from the external power supply of 12 v.

Operating time of the block without recharge: from the built-in accumulator – 2-3 hours (without the connected antenna block).  From the external accumulator 12 in 9 a/h – more than 12 hours.

Display: black-and-white, the increased contrast, with illumination with a resolution of 320 х 240 points.

Case: tight, from aluminum alloy.

Block sizes: 273 х 172 х 55 mm.

Block weight: 2.1 kg.

Working temperature range: -20°C … +50°C.

Type: screened 

  1. 1. antenna block, 90 MHz:
  • maximum depth of sounding – 16-18 m;
  • resolution on depth – 0.5 m;
  • dimensions – 222 x 100 x 27 cm;
  • weight – 37 kg;
  • power consumption – 8 W. 
  1. 2. Antenna block 250M:
  • type – screened;
  • central frequency – 250 MHz;
  • maximum depth of sounding – 12 m;
  • resolution on depth – 0.35 m;
  • dimensions – 82 x 43 x 13 cm;
  • weight – 8 kg;
  • power consumption – 7 W. 
  1. 3. Antenna block, 1200 MHz:
  • type – screened;
  • central frequency – 1 200 MHz;
  • maximum depth of sounding – 1.5 m;
  • resolution on depth – 0.05 m;
  • dimensions – 20 x 17 x 14 cm;
  • weight – 0.8 kg
  • power consumption – 5 W.
  1. 4. Basic version of the software (S)
  2. 5. Radio modem maximum working distance – to 100 meters, data transmission speed – to 10 Mbit/sec.

5. Equipment for measurement of induced polarization Radic-Research SIP-Fuchs IV Instrument

SIP-Fuchs III system is designed for electric survey by induced polarization on the basis of measurement of the impedance (amplitude and phase) in a wide range of frequencies in the field and laboratory scale.

Range of application

Humus • Seashore • Arable land • Historical buildings • Contaminated sites • Archaeological sites • Laboratory measurements • Nuclear waste disposal sites • Estimation of hydraulic permeability • Groundwater exploration in arid areas • Discrimination between clay and saline water • Detection and characterization of electronic conductors.

Technical specifications

Base Unit - Frequency range: 1 mHz - 20 kHz - Signal shape: sinusoidal - Optical interfaces to 2-8 RU - Optical interfaces to 2 RRU - PC interface: 920 kBit/s (USB 1.2) - 50W build-In transmitter: ±400 V, ±125 mA or ±200 V, ±250 mA - Interface to ext. 600 watt transmitter - Powered by ext. 12 V car-battery - Weight: 10 kg - Plastic case size: 50 x 35 x 18 cm3.

Remote units - A/D converter: 24 Bit - Data rate: 48 kHz / 2n, n=0,1,2…10 - Input range (voltage): ±10 V, ±0.4 V - Input range (current): ±2.5 A, ±0.1 mA (1 Ω shunt), ±25 mA, ±1 mA (300 Ω shunt) - Time series: max. 64 k samples - Data format: 32 Bit - Digital power line filter - Digital drift filter - Optical cable length: 2-1000 m - Battery capacity: ~20 h - Weight: 5 kg - Case: cable drum ∅ 23 cm.

Remote reference units - Same data as remote unit (voltage) - Can used also as remote unit.

PC - Windows XP, W7 - Control of the whole system - Time series recording, storing, displaying, transfer function, confidents limits.

Optional ext. 600 W transmitter - Frequency range: DC - 20 kHz - Maximum output: ±400 V, ±1.5 A - Powered by: 230 VAC, 47-63 Hz - Weight: 41 kg - Plastic case size: 57 x 63 x 62 cm.