Electrical Resistivity Testing Resistivity Meter For Groundwater Exploration

DC Resistivity and Electrical Resistivity Tomography (ERT) are surface geophysical methods in which an electrical current is injected into the ground through two electrodes and voltages on the surface are measured revealing the direction and amount of current flow in the subsurface. The data is used to image the subsurface resistivity.

Observed measurements of the current and voltages are converted into “apparent resistivity,” a weighted average of the resistance of earth materials to current flow. Variations in fluid saturation, fluid resistivity, rock type, porosity, and permeability affect resistivity values and are often revealed with electrical resistivity methods.

System Main Interface

The main interface on the tablet PC as following:

Main Features

• Light and flexible: advanced transmitter and receiver are designed in one unit, small size, light weight.
• Large power supply, wide range, high precision: 6000W (1200V * 5A) power supply capacity, 100Vp-p of the wide voltage input range, high accuracy measurement of small signals, so that equipment can be applied to work well in high resistance areas, access to a deeper and better measurement results.
• The "infinite" pole on panel: used to wiring the second and third pole. when using conventional three-pole electrical measurement (combined profiles method and combined electrical sounding method), the instrument can automatically measure ρsA, ρsB, and ρs without operator intervention, reduce human error and improve efficiency.
• Improved anti-interference technology and high accuracy: using multistage wave filtration, signal enhancement technology and integrated electrical interference suppressor function (with super anti-interference of common-mode and different mode).
• Automated: SP, drift and electrodes polarization compensation, compensation range is ±10V.
• The over-voltage protection of receiving part up to 1200V which can protect the instrument on any mistake operation.Transmitting unit supports over-voltage protection, over-current protection and AB open-circuit protection as well as DC high voltage reverse connection protection.
• Bluetooth technology, wireless remote control: Bluetooth technology enables the tablet PC to control the WDA-1/WDA-1B mainframe in 10 meters. It enables all operations as set parameters, start measurement, display result and save data more easily.
• Tablet PC operate, powerful function:all operations as parameters setting, data display, data storage, curve drawing all be finished on the tablet PC, easy and visiblefor filed data procession.
• Grounding resistance check: this function enables the operator to know the ground condition of each electrode.
  Fault diagnoses: the diagnose program quickly detects fault and finds the damaged part.
  Sealed configuration: featuring waterproof, dust-proof design and long life time.
  

Chongqing Gold Mechanical Electrical Equipment Co. Ltd. has been actively involved in the design, development, and manufacturing of geophysical exploration equipment for over four decades. Our expertise encompasses various techniques used to capture images and map subsurface features and structures such as minerals, oil and gas reservoirs, groundwater, and geological formations.

At present, our company manufactures a diverse range of equipment that encompasses resistivity meters, seismic receivers, magnetic instruments, borehole loggers, and various other geophysical sensors. Additionally, we offer geotechnical instruments such as pile testers and drilling machines.

In collaboration with geologists, geophysicists, and other domain experts, we design and develop instruments that cater to the unique requirements of our clients. To maintain our leading edge in the market and keep up with technological progress and scientific advancements, we continuously invest in research and development to ensure that our equipment is accurate, reliable, and efficient.