LG-1 Galileo – Land Gravity Meter

• Lightweight rugged detector with fully quartz core
• Worldwide measuring range
• Repeatability better than 5 µGal
• Precise drift and temperature compensation
• Quick leveling system
• Wide range of ambient operation conditions
• Hot-swappable Li-Ion cells (30 hours at 25°C)
• Detachable control unit with colour graphic display
• Easy control system
• Large data memory (8 GB)
• Bluetooth connection, built-in GPS receiver
• USB data download to flash disk or to PC

Applications:

Oil & gas and mineral exploration, geological mapping, water management, civil engineering and geotechnical investigations, detection of cavities, archaeological studies.

Land Gravity Meter LG-1 Galileo offered as a new product of GF Instruments is ready to match all needs of up-to-date field gravity survey. Its shock resistance is supported by lightweight sensor based on temperature balanced quartz core. Stable measuring features are completed with advanced technology of signal processing. The detachable control unit allows to adjust the leveling and to observe the data quality during measurement. Significant cost effectivity (purchase, operational and service expenses), together with traditional resourceful consulting, make LG-1 another useful family member of geophysical measuring tools made by GF Instruments.

LG-1 land gravity meter

Example of gravimetric survey with LG-1

LG-1 control unit

LG-1 in transport case

CMD – Single or Multi-depth  Electromagnetic Conductivity Measurements for: Engineering, Geotechnical, Shallow Groundwater, Agriculture and Environmental)

Key strength: These Conductivity measurement mappers have the ability to measure either Single-depth or Multiple-depth variations. This unique possibility of acquiring multi-depth measurements in one survey explains the popularity of these instruments, versatility and superiority above all competition products  in this class.

• Multi-depth profiling and mapping (0.15 – 60 m)
• Standard or custom-made probes (1 or 3 or 6 receivers)
• Fast sampling (up to 10 Hz), high temperature stability
• One control unit for all probes (B/W or colour display)
• Simple operation, optional smartphone app
• Manual and continuous measuring modes with GPS
• Two Bluetooth channels (for probe and external GPS)
• Real-time clock, map preview of area coverage
• Data download via USB or flash disk
• Rechargeable Li-Ion battery lasts for 2-3 working days
• Lightweight and rugged design

Applications:

Geological and geotechnical survey, agriculture, archaeology, groundwater protection, environmental monitoring, raw material prospecting, metal object and network detection.

Large family of CMD electromagnetic conductivity meters is designed for survey depth ranges from 0.15 to 60 m. Used contactless method allows fast measurement of conductivity and inphase under all field conditions (including very dry and icy ground). Probes are equipped with 1, 3 or 6 receivers with excellent temperature stability. This way makes high resolution depth graded mapping as well as imaging of sections possible and useful for wide range of walking and moving applications.

CMD-MiniExplorer: three-depth probe with depth ranges 0.5 / 0.25 m, 1.0 / 0.5 m, 1.8 / 0.9 m for archaeology, agriculture and civil engineering, allowing immediate judgement of vertical conductivity gradient.

CMD-Explorer: three-depth probe with depth ranges 2.2 / 1.1 m, 4.2 / 2.1 m, 6.7 / 3.3 m for extra wide range of applications with evaluation of vertical and horizontal conductivity changes.

CMD-MiniExplorer 6L: six-depth probe with depth ranges 0.3 / 0.15 m, 0.5 / 0.25 m, 0.8 / 0.4 m, 1.1 / 0.5 m, 1.6 / 0.8 m, 2.3 / 1.1 m for high resolution mapping and section imaging.

CMD-explorer 6L: six-depth probe with depth ranges 0.9 / 0.45 m, 1.6 / 0.8 m, 2.4 / 1.2 m, 3.7 / 1.85 m, 5.0 / 2.5 m, 6.3 / 3.15 m for high resolution mapping and section imaging.

CMD-Tiny: single-depth probe with 0.7 / 0.35 m depth range for assessment of very shallow objects in the frame of civil engineering, agriculture and archaeology.

CMD-1: economy single-depth probe with 1.5 / 0.75 m depth range for archeology, agriculture and buried metal object detection.

CMD-2: single-depth probe with 3.0 / 1.5 m depth range frequently used for assessment of corrosivity risk at pipeline construction and for geologic judgement of construction sites.

CMD-4: single-depth probe with 6.0 / 3.0 m depth range with wide sphere of applications (geological survey, mapping of pollution plumes, raw material prospecting). s

CMD-4/6: single-depth probe with variable depth range 6.0 / 3.0 m or 9.0 /4.5 m for similar purposes like CMD-4 with significantly enhanced survey depth.

CMD-DUO: single-depth, two-men operated probe with variable depth range 15 / 7.5 m or 30 / 15 m or 60 / 30 m for measurement of deeper situated structures (weathered zones, bedrock, cavities).

CMD control unit

Selection guide for Electromagnetics

We offer two series of frequency domain instruments for conductivity and inphase measurement:

• CMD-Explorer with triple or sextuple simultaneously working electromagnetic system.
• CMD with single electromagnetic system.

Electromagnetics – Frequently Asked Questions

• –  What is CMD Instrument?

• It is an electromagnetic conductivity meter (EM instrument working at a low induction number) providing calibrated values of apparent conductivity as well as inphase quantity measured with the specified depth range. (Not to be confused with electromagnetic ppt meters working in a wide range of induction numbers without specified depth range.)

• • • Is CMD multifrequency instrument?

  No, it is a multidepth, frequency domain instrument. The selection of working frequency is connected with linearity of the calibration curve according to the distance of magnetic dipoles. To understand it see

Short guide for electromagnetics

• on these web sites.
  • What is the orientation of magnetic dipoles?
  CMD contains one or more coplanar sensors. This system provides mutual consistency of their individual depth ranges based on the same shape of antenna diagrams. Thus an easier possibility of EM inversion is achieved.

• • Compatibility of control units with probes
  CMD control unit can operate all single depth and multidepth CMD probes allowing firmware upgrade via internet.

• • EM inversion tools
  The choice of commercially available software for EM inversion is currently extremely poor. There is only a limited family of 1D EM inversion SW (as IX1D by Interpex) and no available 2D and 3D tool for EM inversion. Given the circumstances we have found a useful replacement for EM 2D and 3D inversions made by 2D and 3D inversion SW for DC methods. In addition, CMD is equipped with 1D in-situ EM inversion which converts individual multidepth measurements into 2 layered model (upper layer and bottom layer conductivities and depth of their border).

• • Depth ranges and method of calibration
  Each CMD probe has two depth ranges – high depth range with vertical orientation of magnetic dipoles and low depth range with horizontal orientation of magnetic dipoles. A separate calibration for each orientation of the probe is provided.

• • Are the CMDs water resistant?
  CMD probes are not submersible and are not designed to be exposed to heavy rains, unless covered with special protection.

• • How often should I recalibrate my CMD probe?
  – These are recommended recalibration periods for CMDs:
  – CMD-DUO, CMD-4/6, CMD 4, CMD 2: 10 years
  – CMD Explorer, CMD Mini Explorer, CMD 1: 5 years
  – CMD Tiny, CMD Mini Explorer 6L, special multidepth instruments: 3 years
  –  For occasional check or a case of probe damage, we recommend to establish your own check measurement point.

https://geodevice.co/main/magnetometers/pimvm/

• Overview
• Specification

https://geodevice.co/main/magnetometers/gradimag/

MariMag is high sensitive, accurate and small size system for magnetic surveys both in shallow and deep water. Precise sensors with stable specifications as well as system module construction allow us to arrange both longitudinal and horizontal transverse gradiometers very easy. Special software from the equipment set can be installed at any personal computer. The software is intended for the equipment management and control, as well as data recording and visualization, their upload in specified file formats.

MariMag magnetometer

• Maintenance free Overhauser sensors
• High sensitivity and accuracy
• Built-in compass, accelerometer, leak detector, pressure and humidity sensors
• Robust design
• Lightweight and portable

Isolation transceiver

• Built-in monochrome LCD display for the indication of all system parameters
• Safely shuts down in emergency cases
• Measurement control via built-in keypad
• Data storage to the built-in memory card

Tow cable

• High strength Kevlar strain member
• Floating version by request
• Maximum cable length with the standard power supply is 1000 m

MS Windows-based software

• MariMag monitoring and control
• Data visualization
• Ship and towfish positions plotting on a digital map
• Creation and editing of survey lines

Data acquisition, visualization & control software
MariMag system includes special software intended for the equipment management and control, as well as data recording and visualization, their upload in specified file formats. The software indicates the MariMag status in the real time, providing the information about signal strength, sample rate, synch, depth, altitude as well as leakage alarm. Convenient user-friendly interface and terminal access facilitate troubleshooting and resolve issues.MariMag set includes

• MariMag magnetometer
• Tow cable
• Isolation transceiver
• Power supply
• Ethernet сable
• Data acquisition, visualization & control software
• Operation manual
• Spare parts kit
• Shipping/storage case

Optional components

• Altimeter
• Deck cable
• Deck winch for tow cable

• Overview
• Specification

https://geodevice.co/main/electric/medusa-scat_commdd/
   

https://geodevice.co/main/electric/medusa-scat_commdd/

https://geodevice.co/main/electric/fastsnap/

FastSnap is a multichannel automatically-controlled telemetry complex that ensures TEM/TDEM, frequency sounding, induced polarization and direct current techniques. The system is by far the most advanced in its class offering the highest technical specifications and most comprehensive software package along with an affordable cost. The software streamlines all aspects of advanced automated ground TEM survey.

FastSnap allows advanced users to produce results at the highest professional level. The system is truly new benchmark for ground based TEM instruments.

• Search and exploration of solid minerals
• Search for underground water
• Study of permafrost
• Environmental studies
• Oil and gas exploration

• Process speed: the measurement takes only 4–5 minutes to perform observations to depths of 500–600 m
• Depth: up to 1.5–2 km (with a loop 300×300 m)
• Support of multichannel measurements — multiple productivity gain, estimation and accounting for induced polarization, magnetic viscosity and lateral inhomogeneity of the medium
• Ability to perform scanning measurements in motion (3–5 km/h) with a depth of 30–40 m
• Ability to perform automatic measurements, processing and interpretation allowing to obtain a quick result directly in the field
• A complete set of software — design of the network with uploading of GPS coordinates into personal GPS navigators, advanced modeling, field measurements, standard and in-depth processing of initial (raw) signals, inversion and construction of sections

• Full waveform data collection with each individual trace recorded separately for unparalleled quality control and post processing
• Each receiver has dual ADC’s — 14 bit (fast) and 24 bit (standard) for best possible resolution at both early and late times
• Receivers can operate with regular wire loops or with active sensors
• Data is stored directly to a laptop during acquisition along with all relevant positioning information

• Rated current 30 Amp
• Very FastShut-off time (1–2 μs for 25 m loop, 2.5–4.5 μs for 100 m loop)
• PC controlled Current Selecto
• PC controlled Damping Resistance
• GPS or Cable Synchronized
• On / off time: 20, 40, 100, 200, 500, 1000 ms
• Can vary ratio of on and off times between: 1:1 3:1 and continuous on
• Weight: 5 kg (without battery)
• Dimensions: 300×225×132 mm approx

The FastSnap Software set is some of the most powerful TEM software ever offered. The optimal method for all elements of ground TEM surveys is built into the software package.

Project Manager combines advanced GIS survey planning and database management in an easy-to-use package. With this software, surveys are no longer restricted to straight parallel lines, allowing survey flexibility in difficult terrain with limited access.

Project Manager 3.0 allows users to input parameters such as transmitter and receiver loop size and separation between stations. The software then generates a survey template with coordinate information for each loop corner. This information can be exported in GPX format for handheld GPS’s for flagging survey lines and corner locations. The template can then be viewed in the field whilst acquisition is taking place.

FastEM registration registration uses preset acquisition sequences to automatically record multiple recordings at each location using a range of different current, gain and stack combinations.

This advanced technique optimises data quality at all the different stages of the transient decay as follows:

• Measurements are collected using extremely fast sampling frequency (40MHz fast ADC) with low current and low gain in order to enhance early time response
• Measurements are collected using fast sampling frequencies, medium current and medium gain settings are used in order to optimise the mid time response
• Measurements are collected using slower sampling frequency, high current, high gain and standard ADC 24 bit resolution in order to optimise late time response

Unlike many systems restricted by small internal memory full waveform data is recorded for each individual stack. This means that data is sampled at the maximum resolution that the instrument is capable of and allows unparalled control of processing and rejection of bad data.

TEM Processing is used to automatically filter and combine the best sections of the data collected using different current, gain, sampling frequency etc. into one final curve for each sounding location. The result after processing is the data of the highest possible quality and the retention of both the shallowest and deepest information possible.

Model 3 is a complete layered Earth Modelling package for ground based TEM data. Modelling is the final stage of TEM data manipulation and is of particular use wh ere the depth and electrical resistivity of layers are instrumental for interpretation. Plug-ins available for advanced functions such as accounting for IP effects and data collection using grounded lines.

• Transmitter CTU-30 with rated current 30 А — 1 pc.
  • Transmitter CTU-30
  • Cable for connecting external power supply 12 V
  • Cable for connection of 110 / 220 V network
  • GPS / GLONASS Antenna with SMA-M connector
  • Control and synchronization cable (length 40 m)
  • Power supply cable for the source (loop)
• Telemetric receiver RXU-V3 — 1 pc. / 2 pc.
  • Receiver module RXU-v3
  • Rx Line connection cable (optionally connector can be set on the receiver’s casing)
  • Cable “ADC input”
  • ADC input cable
  • Cable for connecting external power supply 12 V
  • Cable for connection of 110 / 220 V network
  • Digital cable line for receiver module (length 100 m)
  • GPS / GLONASS Antenna with SMA-M connector
• Single- / dual- channel line adapter DLA-2 — 1 pc
  • Line adapter DLA-2
  • USB-AB cable
  • Cable for connecting a receiver module to DLA via communication line
• Сords set — 1 pc.
• Connectors set — 1 pc.
• Receiver loop 10×10 m — 1 pc. / 2 pc.
• Transmitter loop 50×50 m / 100×100 m — 1 pc.
• Software for data acquisition and processing — 2 keys / 3 keys
• Operation manual   1 pc.

• Supply of three- and four- channel complexes
• Increasing the maximum output current of transmitter to 50 A
• Supply of additional cable lines (up to 400х400 m)
• Supply of specialized coils

Specifications of FastSnap RXU-V3 receiver unit
Receiver input / ADC	two inputs: – standard ADC: ∆∑ 24 bit; – fast ADC: direct sampling, 14 bit.
Time sampling rate and range (bits are in parentheses)	fast ADC: 25 ns (14 bit), 100 ns (16 bit), 800 ns (18 bit); 6.4 μs (22 bit); standard ADC: 25.6 μs, 204.8 μs (24 bit).
Bandwidth	0.33 Hz to 20 MHz
Number of digitized counts per realization (pulse/signal)	14500
Recording time range	fast ADC: 25 ns – 92.8 ms standard ADC: 25.6 μs – 2.96 s
Maximum input voltage	fast ADC: ± 1 V; standard ADC: ± 4 V.
Input signal gain	fast ADC: gain from 1 to 140; max. gain ×280 (specified separately). standard ADC: gain factors: 1, 2, 4, 8, 16, 32, 64.
Input impedance	fast ADC: – 5 KOhm (loop); – 2 MOhm (grounded line); standard ADC: – 2 MOhm (universal).
Synchronization system	GPS or external
Positioning	internal GPS, 12 channels
Power and charge	power supply: one internal off-hand AGM battery, 6 V / 7.2 Ah (CSB GP-672 or compatible); internal battery recharge: – built-in 110/220 V charger; – 12 V external power supply, through external power cable (e.g. from a car battery).
Data transmission	digital lines of field two-wire cable (twisted pair), 1 to 400 m.
Size	235×181×104 mm
Weight	3.6 kg (with battery)
Humidity	80%
Temperature	–40 ÷ +50ºС
Specifications of FastSnap CTU-20 transmitter unit
Output voltage	6 to 250 V DC voltage (one or several serial batteries)
Output current (transmitter loop)	0.05 – 10 A (optional 20 A with TX power upgrade)
Maximum output power	250 W (optional 500 W with TX power upgrade)
Time of positive and negative pulses (on-off time)	On-Off time: 20, 40, 100, 200, 500, 1000 ms On-Off time ratio: 1:1, 3:1, no pause
Support of current periods multiple to industrial noise frequency	yes, periods multiple to 50 Hz
Synchronization system	GPS or external
Positioning	internal GPS, 12 channels
Time of small current (0.5 A) turn-off (ramp speed) in loops of different sizes	loops: – 25×25 m: 1 – 2 μs; – 100×100 m: 4 – 10 μs;
Power and charge	power supply: internal off-hand AGM battery, 6 V / 7.2 Ah (CSB GP-672 or compatible); internal battery recharge: – built-in 110/220 V charger; – 12 V external power supply / recharge, through external power cable (e.g. from a car battery).
Management	PC (software) via DLA TX CONTROL port or RS232 interface (COM port). Control cable can reach 100 m long. Built-in control panel with OLED display and keypad.
Size	37.1 × 25.8 × 15.2 cm
Weight	7.2 kg (with battery)

https://geodevice.co/main/electric/fastsnap/

FastSnap is a multichannel automatically-controlled telemetry complex that ensures TEM/TDEM, frequency sounding, induced polarization and direct current techniques. The system is by far the most advanced in its class offering the highest technical specifications and most comprehensive software package along with an affordable cost. The software streamlines all aspects of advanced automated ground TEM survey.

FastSnap allows advanced users to produce results at the highest professional level. The system is truly new benchmark for ground based TEM instruments.

• Search and exploration of solid minerals
• Search for underground water
• Study of permafrost
• Environmental studies
• Oil and gas exploration

• Process speed: the measurement takes only 4–5 minutes to perform observations to depths of 500–600 m
• Depth: up to 1.5–2 km (with a loop 300×300 m)
• Support of multichannel measurements — multiple productivity gain, estimation and accounting for induced polarization, magnetic viscosity and lateral inhomogeneity of the medium
• Ability to perform scanning measurements in motion (3–5 km/h) with a depth of 30–40 m
• Ability to perform automatic measurements, processing and interpretation allowing to obtain a quick result directly in the field
• A complete set of software — design of the network with uploading of GPS coordinates into personal GPS navigators, advanced modeling, field measurements, standard and in-depth processing of initial (raw) signals, inversion and construction of sections

• Full waveform data collection with each individual trace recorded separately for unparalleled quality control and post processing
• Each receiver has dual ADC’s — 14 bit (fast) and 24 bit (standard) for best possible resolution at both early and late times
• Receivers can operate with regular wire loops or with active sensors
• Data is stored directly to a laptop during acquisition along with all relevant positioning information

• Rated current 30 Amp
• Very FastShut-off time (1–2 μs for 25 m loop, 2.5–4.5 μs for 100 m loop)
• PC controlled Current Selecto
• PC controlled Damping Resistance
• GPS or Cable Synchronized
• On / off time: 20, 40, 100, 200, 500, 1000 ms
• Can vary ratio of on and off times between: 1:1 3:1 and continuous on
• Weight: 5 kg (without battery)
• Dimensions: 300×225×132 mm approx

The FastSnap Software set is some of the most powerful TEM software ever offered. The optimal method for all elements of ground TEM surveys is built into the software package.

Project Manager combines advanced GIS survey planning and database management in an easy-to-use package. With this software, surveys are no longer restricted to straight parallel lines, allowing survey flexibility in difficult terrain with limited access.

Project Manager 3.0 allows users to input parameters such as transmitter and receiver loop size and separation between stations. The software then generates a survey template with coordinate information for each loop corner. This information can be exported in GPX format for handheld GPS’s for flagging survey lines and corner locations. The template can then be viewed in the field whilst acquisition is taking place.

FastEM registration registration uses preset acquisition sequences to automatically record multiple recordings at each location using a range of different current, gain and stack combinations.

This advanced technique optimises data quality at all the different stages of the transient decay as follows:

• Measurements are collected using extremely fast sampling frequency (40MHz fast ADC) with low current and low gain in order to enhance early time response
• Measurements are collected using fast sampling frequencies, medium current and medium gain settings are used in order to optimise the mid time response
• Measurements are collected using slower sampling frequency, high current, high gain and standard ADC 24 bit resolution in order to optimise late time response

Unlike many systems restricted by small internal memory full waveform data is recorded for each individual stack. This means that data is sampled at the maximum resolution that the instrument is capable of and allows unparalled control of processing and rejection of bad data.

TEM Processing is used to automatically filter and combine the best sections of the data collected using different current, gain, sampling frequency etc. into one final curve for each sounding location. The result after processing is the data of the highest possible quality and the retention of both the shallowest and deepest information possible.

Model 3 is a complete layered Earth Modelling package for ground based TEM data. Modelling is the final stage of TEM data manipulation and is of particular use wh ere the depth and electrical resistivity of layers are instrumental for interpretation. Plug-ins available for advanced functions such as accounting for IP effects and data collection using grounded lines.

• Transmitter CTU-30 with rated current 30 А — 1 pc.
  • Transmitter CTU-30
  • Cable for connecting external power supply 12 V
  • Cable for connection of 110 / 220 V network
  • GPS / GLONASS Antenna with SMA-M connector
  • Control and synchronization cable (length 40 m)
  • Power supply cable for the source (loop)
• Telemetric receiver RXU-V3 — 1 pc. / 2 pc.
  • Receiver module RXU-v3
  • Rx Line connection cable (optionally connector can be set on the receiver’s casing)
  • Cable “ADC input”
  • ADC input cable
  • Cable for connecting external power supply 12 V
  • Cable for connection of 110 / 220 V network
  • Digital cable line for receiver module (length 100 m)
  • GPS / GLONASS Antenna with SMA-M connector
• Single- / dual- channel line adapter DLA-2 — 1 pc
  • Line adapter DLA-2
  • USB-AB cable
  • Cable for connecting a receiver module to DLA via communication line
• Сords set — 1 pc.
• Connectors set — 1 pc.
• Receiver loop 10×10 m — 1 pc. / 2 pc.
• Transmitter loop 50×50 m / 100×100 m — 1 pc.
• Software for data acquisition and processing — 2 keys / 3 keys
• Operation manual   1 pc.

• Supply of three- and four- channel complexes
• Increasing the maximum output current of transmitter to 50 A
• Supply of additional cable lines (up to 400х400 m)
• Supply of specialized coils

Specifications of FastSnap RXU-V3 receiver unit
Receiver input / ADC	two inputs: – standard ADC: ∆∑ 24 bit; – fast ADC: direct sampling, 14 bit.
Time sampling rate and range (bits are in parentheses)	fast ADC: 25 ns (14 bit), 100 ns (16 bit), 800 ns (18 bit); 6.4 μs (22 bit); standard ADC: 25.6 μs, 204.8 μs (24 bit).
Bandwidth	0.33 Hz to 20 MHz
Number of digitized counts per realization (pulse/signal)	14500
Recording time range	fast ADC: 25 ns – 92.8 ms standard ADC: 25.6 μs – 2.96 s
Maximum input voltage	fast ADC: ± 1 V; standard ADC: ± 4 V.
Input signal gain	fast ADC: gain from 1 to 140; max. gain ×280 (specified separately). standard ADC: gain factors: 1, 2, 4, 8, 16, 32, 64.
Input impedance	fast ADC: – 5 KOhm (loop); – 2 MOhm (grounded line); standard ADC: – 2 MOhm (universal).
Synchronization system	GPS or external
Positioning	internal GPS, 12 channels
Power and charge	power supply: one internal off-hand AGM battery, 6 V / 7.2 Ah (CSB GP-672 or compatible); internal battery recharge: – built-in 110/220 V charger; – 12 V external power supply, through external power cable (e.g. from a car battery).
Data transmission	digital lines of field two-wire cable (twisted pair), 1 to 400 m.
Size	235×181×104 mm
Weight	3.6 kg (with battery)
Humidity	80%
Temperature	–40 ÷ +50ºС
Specifications of FastSnap CTU-20 transmitter unit
Output voltage	6 to 250 V DC voltage (one or several serial batteries)
Output current (transmitter loop)	0.05 – 10 A (optional 20 A with TX power upgrade)
Maximum output power	250 W (optional 500 W with TX power upgrade)
Time of positive and negative pulses (on-off time)	On-Off time: 20, 40, 100, 200, 500, 1000 ms On-Off time ratio: 1:1, 3:1, no pause
Support of current periods multiple to industrial noise frequency	yes, periods multiple to 50 Hz
Synchronization system	GPS or external
Positioning	internal GPS, 12 channels
Time of small current (0.5 A) turn-off (ramp speed) in loops of different sizes	loops: – 25×25 m: 1 – 2 μs; – 100×100 m: 4 – 10 μs;
Power and charge	power supply: internal off-hand AGM battery, 6 V / 7.2 Ah (CSB GP-672 or compatible); internal battery recharge: – built-in 110/220 V charger; – 12 V external power supply / recharge, through external power cable (e.g. from a car battery).
Management	PC (software) via DLA TX CONTROL port or RS232 interface (COM port). Control cable can reach 100 m long. Built-in control panel with OLED display and keypad.
Size	37.1 × 25.8 × 15.2 cm
Weight	7.2 kg (with battery)

https://geodevice.co/main/electric/armt-5/

ARMT-5 complex is designed for implementation of a variety of electric survey methods: AMT, CSAMT, CSEM, RMT, CSRMT. Its wide frequency range (0.1 Hz–1 MHz) makes it possible to apply this tool to explore depths fr om first meters up to several kilometers for wide range of targets.

ARMT-5 recorder allows one to visualize data in real time in both time and frequency domains. To quality control, a robust estimator of tensor and scalar transfer functions (impedance and tipper) is built-in. The receiver has several useful features for a controlled source EM exploration. The receiver is equipped with a built-in sine signal generator for automatic calibration (including calibration of magnetic sensors) and programmable external amplifiers for magnetic and electrical sensors (gain: 1–256). Sophisticated functionality, application of the most up-to-date element base, good-quality connectors and case, large color screen, fast interfaces for downloading data from SSD drive, and other technical solutions make ARMT-5 modern, convenient and versatile broadband electromagnetic tool.

For ARMT-5 it is available a number of induction magnetic sensors:

• ARMT-HF with operating frequency range 1–1 000 kHz
• ARMT-MF with operating frequency range 20–20 000 Hz
• ARMT-LF with operating frequency range 0.1–20 000 Hz

Magnetic MF and HF sensors are placed in a single plastic container with a bubble level and display for digital compass in its upper part. Antennas ARMT-LF can be additionally equipped with portable precision tripods, allowing, fast and accurate installation of sensors on any surface.

The estimated penetration depth of the ARMT-5 complex is presented in the table below. It depends on the frequency of the signal and the average electrical resistivity of investigated section:

An important feature of the complex is a high execution speed of observations when performing shallow studies due to implementation of automated and remote control of a controlled source (generator) over a radio channel. For example, in order to perform measurements with frequencies from 100 Hz and higher taking into account the time for spreading and assembly of measuring equipment at a point, it takes only about two minutes. Such speed of data acquisition is unattainable for other complexes and methods. For example, to perform VES at depths of about 300–500 m, it takes about half an hour, what is 10–20 times longer than working with ARMT-5. It is also important to understand that the inversion of ARMT-5 data can be performed both in 1D and 2D variants, and interpretation of VES data is carried out only for 1D model, what leads to an increase in the error of constructing the geoelectric section in a complex medium.

The high-impedance input of the preamplifier of electric channels realized in ARMT-5 allows to work with short (20 m) ungrounded lines at frequencies from 100 Hz and higher. This is especially useful when working in winter conditions or in arid areas, wh ere it is difficult to achieve acceptable grounding with conventional electrodes. When operating at frequencies from 0.1 Hz it becomes necessary to use longer (50–100 m) electric lines that are grounded by non-polarized or brass electrodes.

Problems that can be solved with ARMT-5:

• Study of geological structure
• Structural geographic mapping
• Determination of rock depth
• Mapping of karst structures, fracturing zones and zones of high humidity
• Search for underground water
• Monitoring of dangerous processes
• Search, exploration and monitoring of hydro-therms
• Permafrost studies
• Environmental studies
• Search and exploration of deposits of solid minerals
• Search for oil and gas

Package contents:

• Recorder ARMT-5
• Battery charger
• External GNSS antenna
• Power cable
• Сomm cable
• USB with software
• Documentation.

In addition to ARMT-5 the following may be purchased:

• Low-Frequency magnetic coil sensor
• Electric lines
• Non-polarizing electrodes
• Portable Precision Tripods
• Controlled source with radio modem.

• Overview
• Specification
• Processing software

• Overview
• Specification
• Processing software

https://geodevice.co/software/electric-software/zondmt1d/https://geodevice.co/software/electric-software/zondmt1d/https://geodevice.co/software/electric-software/zondmt1d/

https://geodevice.co/main/seismic/source/marine-seism/multijack/

Detailed Description