GD-05 Resistivity Meter

Product function

1D RES Souding
When testing, create test tasks directly on the phone APP.Setting array parameters convenient and quickly.The test results are rich in display.Includes the value of grounding resistance, current, voltage, apparent resistivity R0.
- 1D RES Souding
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When testing, create test tasks directly on the phone APP.Setting array parameters convenient and quickly.The test results are rich in display.Includes the value of grounding resistance, current, voltage, apparent resistivity R0.
Supported 1D arrays (click for details) ：
- Supported 1D arrays (click for details) ：
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4P-VES
4P-VES
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Electrode connection: electrodes A, B, M and N are respectively connected to terminals A, B (∞), M and N of the mainframe.

In this measuring device, the measuring point O is the symmetric center of electrodes. MO=ON and AO=OB. After the current measuring point is measured, the four electrodes move simultaneously along the X-axis with certain distances among them, so that the measuring point O moves to the next measuring point along the X-axis. Since the set origin of coordinates is a fixed point on the X-axis (generally the midpoint of the first MN), the device is mainly used to research the lateral variation of resistivity.
Composite Profiling
Composite Profiling
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Electrode connection: electrodes A, B, M and N are respectively connected to terminals A, tri-polar B, M and N of the mainframe. The infinite remote electrode C is connected to the terminal B (∞) of the mainframe.

As shown in the above figure, the electrode arrangement of composite profiling is the same as that of composite electrical sounding. The same measuring point will produce two sets of measurement data: R0_a andR0_b. After the current measuring point is measured, electrodes A, M, N and B will move along the X-axis with certain distances among them to the next measuring point, so as to obtain the lateral variation of resistivity.
Dipole VES
Dipole VES
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Dipole device: The device is characterized in that current electrodes AB and measuring electrodes MN are dipoles, and there are certain distances among them. Since the four electrodes are on the same straight line, they are called axial dipoles. It is a combination of moving source profiling and sounding methods. Therefore, it’s applicable to research of resistivity variation at different depths along the profile.

Electrodes A, B, M and N are respectively connected to terminals A, B (∞), M and N of the mainframe.

Take a fixed point on the measuring point as the origin O. The distance between current dipoles AB and receiving dipoles MN is a. Profiling measurement is realized by keeping the relative positions of AB and MN unchanged and making A, B, M and M move simultaneously along the X-axis; sounding measurement is realized by moving AB (generally the displacement distance is a) and moving MN in new positions.
3P-VES
AMN Devices
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MNB device
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Electrode connection: A, M, N connected to the related ports of the mainframe A, M, N , infinity pole C connect the port B（∞） of the mainframe.

After starting the measurement, the mainframe is automatically powered by A and B (∞).

The electrode C is fixed far (infinite place), and the general OC is 5~10 times of OA or OB. Because the MN electrode is fixed, the measured point O is at the midpoint of the MN, so the A or B electrode is used to achieving the sounding test.

Electrode connection: the port of the M, N, B was connected to the related port of the mainframe M, N, B , infinity pole C instrument is connected at the mainframe' ports A (∞) .

After starting measurement, the mainframe is automatically powered by the mainframe ports A (∞) and B.

The electrode C is fixed (infinitely place) far , and the general OC is 5~10 times of OA or OB distance. Because the MN electrode is fixed, the measured point O is at the midpoint of the MN, the electrode of A or B is used to achieving the sounding test.
Mid-grandient
Mid-grandient
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Electrode connection: the electrodes of the mainframe A, B, M and N are connected to related ports of the mainframe A, B (∞), M and N.

This device is designed at the large and fixed distance of the power supply electrode AB; the measuring electrode MN is measured at a point 1/3 of the middle of the AB. Recorded the midpoint of MN. This arrangement is used to observe the resistivity change of the detect the position at certain depth related to the ground surface. The origin point O is defined at the middle of AB, and the X axis from A to B is in the positive direction. In addition to AB/2 and MN/2, the X axis coordinate X and the Y axis coordinate y of the MN midpoint will affect the device constants.
Customized arrays
Customized arrays
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Custom device: no limitation of the device, flexible. According to reality case, inputting the location information a, B, x, y, and then manually calculate the corresponding K value, and fill in the software for creating custom scripts.
Detailed data presentation：
- clearly task interface
- Test data scatter diagram, real-time rendering, convenient and timely analysis of data
- Export excel and dat format data and save them directly to SD card
- Detailed data presentation
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Detailed data presentation：
- clearly task interface
- Test data scatter diagram, real-time rendering, convenient and timely analysis of data
- Export excel and dat format data and save them directly to SD card

Product features

Android phone APP, connected to the host through wifi, the field is easy to operate

Multidimensional data display, Discover and deal with all issues on-the-spot, instant positioning

Monitoring host instrument provides extremely rich software functionality, to assist clients in handling issues and adjusting settings under different field applications. This allows the data recording of various ambient data and survey procedures in a fashion as real, complete, objective as possible. Detailed functionalities are as follow:

It has alarms for the open circuit, the short circuit and the current voltage out-range, and problems can be found timely and solved instantly.
Main interface displays I, V, R0, η, M, the electrode locations of A, B, M and N. The bottom greyed interface shows the grayscale bar of V, I, R0, standard deviation at any specific survey locations. Total survey points, remaining survey points and estimated time remaining are also displayed during data acquisition.

Product Accessories

GD-05 maiframe
- GD-05 maiframe
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- GD-05 maiframe
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- GD-05 maiframe
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- GD-05 maiframe
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GD-05 mainframe: All aluminum alloy body; high heat dissipation performance; damping rings on both sides provide excellent damping effects; adaptable to the complex construction environment in the field.
Max Tx voltage ： 250V
Max Tx current ： 2A
Operating temperature ： -10°C~+50°C
Weight ： 7Kg

GD-05 mainframe: controlled by Android phones; easy-to-use; high-quality; reasonably priced.
Max Tx voltage ： 250V
Max Tx current ： 2A
Operating temperature ： -10°C~+50°C
Weight ： 7Kg

Ports of the mainframe, including A, B, M, N, S485 and the switch, are arranged on the side plate, easy to operate.
Max Tx voltage ： 250V
Max Tx current ： 2A
Operating temperature ： -10°C~+50°C
Weight ： 7Kg

GD-05 mainframe: controlled by Android phones; easy-to-use; high-quality; reasonably priced.
Max Tx voltage ： 250V
Max Tx current ： 2A
Operating temperature ： -10°C~+50°C
Weight ： 7Kg
Electrodes
- Stainless steel electrode
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- Stainless steel electrode
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- Copper electrode
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- Copper electrode
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- Solid non-polarization electrode
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- Solid non-polarization electrode
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The electrode is made of stainless steel 304, with excellent conductivity, low temperature resistance, corrosion resistance and high strength, and can adapt to most geographical conditions.
Dimension ： Φ12*400mm
Material ： 304/PVC
Weight ： 0.5KG

The plug-in clip uses corrosion-resistant and durable PVC materials; the handle is designed as a user-friendly long handle, greatly facilitating the field staff to set the test environment; the clip is made of durable and corrosion-resistant metal steel; the circular groove is suitable for all our ERT cables, which solves the open circuit problem of ground resistance from accessories.
Dimension ： Φ12*400mm
Material ： Stainless steel 304/PVC
Weight ： 0.5KG

The electrode made of red copper processing is characterized by excellent conductivity, corrosion resistance, stable electrode potential, etc., and can adapt to most geographical conditions.
Dimension ： Φ10*280mm
Material ： Stainless steel 304/PVC
Weight ： 0.4KG

The plug-in clip uses corrosion-resistant and durable PVC materials; the handle is designed as a user-friendly long handle, greatly facilitating the field staff to set the test environment; the clip is made of durable and corrosion-resistant metal steel; the circular groove is suitable for all our ERT cables, which solves the open circuit problem of ground resistance from accessories.
Dimension ： Φ10*280mm
Material ： Copper
Weight ： 0.4KG

The solid non-polarization electrode is small in size, light and convenient for outdoor workers to carry; the shell is made of PVC materials and is not easily broken; the color of the shell is obvious; it’s convenient for recycling in the field. The shell is mainly made of lead chloride, sodium chloride, copper, gypsum and other raw materials, and is recyclable and pollution-free.
Dimension ： 110*75mm
Weight ： 0.4Kg

The solid non-polarization electrode is characterized by small potential difference, good stability, low noise, etc. and is often used for the ERT IP test.
Dimension ： 110*75mm
Weight ： 0.4Kg
Mainframe accessories
- Disc
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- USB connecting line
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- External power line
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- Banana clip
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- Banana alligator clip
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The disc includes: an instruction manual, Geomative studio software, and a device installation driver.

The USB connecting line is a connecting line between the mainframe and the computer used to upload and download data of the mainframe to the computer.

The power line connects the mainframe to the external power source. When the battery of the mainframe is low or damaged, 20-60V voltage can be provided for the mainframe so that the mainframe can work normally.

A common connecting line used for connection between the power source and the mainframe and connection among terminals A, B, M and N

A common connecting line used for connection between the power source and the mainframe and connection among terminals A, B, M and N

Specification

Others

Working temperature: -10℃~+50℃
- Working temperature
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Memory capacity: 8GB
- Memory capacity
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External power: DC24~60V
- External power
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Built-in battery: 16.8V lithium battery
- Built-in battery
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Charging voltage: 100V~250VAC（50HZ/60HZ）
- Charging voltage
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Weight: 7.5Kg
- Weight
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Receiver

Accuracy: 0.3%±1uV
- Accuracy
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Dynamic Averaging: 24 bit
- Dynamic Averaging
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Noise rejection: ≥95dB
- Noise rejection
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SP compensation: ±10V
- SP compensation
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Stacking: 1~255 times
- Stacking
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Voltage range: ±24V
- Voltage range
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Transmitter

Current accuracy: 0.3%±1uA
- Current accuracy
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Maximum Tx Current : 2A
- Maximum Output Current
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The maximum transmitting current of the VES mode is 6A.

The maximum transmitting current of the single link high density ERT measurement is 2A.

The maximum transmitting current of the duplex high density ERT measurement is 4A.
Maximum Tx power: 500W
- Maximum Tx power
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Maximum Tx Voltage: 250V
- Maximum Tx Voltage
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Protection: IP65, over-current, over-voltage, short circuit
- Protection
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Product Introduction

Product function

1D RES Souding

1D RES Souding

Supported 1D arrays (click for details) ：

Supported 1D arrays (click for details) ：

4P-VES

Composite Profiling

Dipole VES

AMN Devices

MNB device

Mid-grandient

Customized arrays

Detailed data presentation

Product features

Product Accessories

GD-05 maiframe

GD-05 maiframe

GD-05 maiframe

GD-05 maiframe

Stainless steel electrode

Stainless steel electrode

Copper electrode

Copper electrode

Solid non-polarization electrode

Solid non-polarization electrode

Disc

USB connecting line

External power line

Banana clip

Banana alligator clip

Specification

Others

Working temperature

Memory capacity

External power

Built-in battery

Charging voltage

Weight

Receiver

Accuracy

Dynamic Averaging

Noise rejection

SP compensation

Stacking

Voltage range

Transmitter

Current accuracy

Maximum Output Current

Maximum Tx power

Maximum Tx Voltage

Protection