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GEO-G1 Remote Intelligent Resistivity & IP System | Geotech Instruments
PRODUCT PARAMETERS
Description
Abstract
AbstractGEO-G1 combines non-directional cascaded converters with dual-mode 4G communication, turning conventional ERT from heavy multi-person fieldwork into a lightweight, remote, segmented and rolling workflow.
Features
Rolling, flexible layout
Non-directional cascaded converters move freely along the line; cables can be reeled in and out during measurement
Smart segmented survey
Start measuring with partially deployed electrodes; profile length flexibly adjustable
Dual-mode wireless
Short-range Bluetooth + built-in 4G for remote operation and real-time monitoring
High-precision acquisition
32-bit ADC: 2 nV voltage and 2.5 nA current resolution
Strong interference immunity
140 dB power-line rejection, ±10 V SP compensation
Long battery life
Built-in 12 V / 7 Ah Li-battery, 40+ hours without 4G
Rugged field design
IP67 core components, −25 ℃ to 50 ℃
High-power transmitter
Up to 1500 V / 6 A, adjustable pulse width & duty cycle
Applications
● Remote monitoring
● Geology
● Engineering
● Environment
● Disaster prevention
● Urban & archaeology
● Lithology
● Tailings ponds
Specifications
Receiver
| Voltage range | ±12V |
| Accuracy | ±0.1% ±1 digit |
| ADC | 32-bit |
| Voltage resolution | 2 nV |
| Input impedance | ≥50 MΩ |
| Chargeability accuracy | ±0.2% |
| SP compensation | ±10 V |
| Power-line rejection | 140 dB |
Transmitter
| Current rang | ±8 A |
| Accuracy | ±0.1% |
| Current resolution | 2.5 nA |
| Max. voltage | 1200 V |
| Max. current | 8 A |
| Pulse width / duty cycle | adjustable |
120-Channel Configuration
4G + Bluetooth dual-mode, 40+ h battery life
12 electrodes each, 1000 V / 4 A, only 0.5 kg
Up to 480 V in 10 steps, max. 2.0 A, IP67
5 / 10 m Interval, 12 taps
System Layout
2D layout
3D layout
From a single profile to full 3D arrays
One system covers it all: cascaded converters move freely along the line, cables reel in and out during measurement, and layout is no longer restricted.
Case Study
FAQ
In gravity exploration (SI), what is the unit of gravity? How to convert gravity units between SI and CGS?
① In SI, it is m·s-2, and one percent of it is the international unit abbreviation g.u.;
② Conversion between SI and CGS: 1g.u.=10-1 mGal
What are gravitational field and gravitational potential?
Gravitational field: The space around the earth with gravity is called the gravitational field.
Gravitational potential: The gravitational potential W in the gravitational field is equal to the work done by a particle of unit mass moving from infinity to that point.
What is the normal gravity field of the earth? What are the rules for the change of the normal gravity field with latitude and altitude?
① The normal gravity field of the earth: Assuming that the earth is a rotating ellipsoid (reference plane), the surface is glossy, the internal density is uniform, or it is distributed in concentric layers, the density of each layer is uniform, and the deviation of the shape of the ellipsoid from the geoid is very small, then the gravity field generated by the earth is the normal gravity field.
② The normal gravity value is only related to the latitude, the smallest at the equator and the largest at the poles, with a difference of about 50,000 g.u.; the rate of change of the normal gravity value with latitude is the largest at 45° latitude, and zero at the equator and the poles; the normal gravity value decreases with increasing altitude, and its rate of change is -3.086 g.u.. The main feature of the long-term change is the "westward drift" of the geomagnetic elements, both the dipole field and the non-dipole field drift westward, and have a global nature.
What is the relationship between gravitational field strength and gravitational acceleration?
The gravitational field strength is equal to the gravitational acceleration in both numerical and dimensional terms, and the two are in the same direction. In gravity exploration, all references to gravity refer to gravitational acceleration. The gravitational field strength at a point in space is equal to the gravitational acceleration at that point.
What is gravity exploration?
Gravity exploration is an exploration method that is based on the density difference of rocks and ores. Since density difference will cause local changes in the normal gravity field of the earth (i.e. gravity anomaly), it is used to solve geological problems by observing and studying gravity anomalies.
