2026 Guide: 5 Resistivity Imaging System Providers for Surveys

Introduction

Engineers requesting a GD-32 resistivity imaging system quote need to establish the configuration required for their survey: acquisition channels, electrode layout, transmitter arrangement, software, and field support.

GD-32 is listed in Geomative’s current manufacturer catalog. It should therefore be evaluated directly, rather than treated as an unavailable model requiring a substitute.

This guide introduces five providers and selected resistivity/IP offerings. Numbering reflects editorial presentation order, not an independent performance ranking. The systems differ in architecture and configuration, so procurement comparisons should use complete proposed solutions rather than isolated headline specifications.

1. Geomative

Brand Introduction

Geomative develops geophysical instruments and digital subsurface platforms under the proposition “Making Subsurface Information Clearer and More Reliable.”

Its offering connects field acquisition with data management and interpretation. For buyers, the relevant question is whether the proposed equipment and software meet the project’s measurement, deployment, and verification requirements.

Core Technology & Products

Geomative’s current catalog includes GD-32 within the GD-12/22/32 resistivity and IP workstation range. The published GD-32 table lists maximum transmission power of 15kW, maximum voltage of 1500V, and maximum current of 10A.

These ratings should be checked against the quoted power supply, operating mode, switching equipment, and cable limits. They do not establish a guaranteed investigation depth.

The wider portfolio includes GD-10 and GD-20 systems, whose specifications should be assessed separately. Buyers should distinguish simultaneous receiving channels from electrode-switching capacity and confirm the functions included in each configuration.

DIGspace provides data-management and spatial-visualization capabilities, with online inversion documented for its ERT workflow. Required imports, exports, processing modules, and licenses should be demonstrated using representative project data.

Industries Served

Relevant applications include mineral exploration, groundwater investigation, engineering geology, and environmental surveys.

Each application requires a suitable survey design. Borehole, water-based, or repeated monitoring work may need dedicated accessories and additional configuration. Long-term monitoring also requires maintenance and verification procedures.

Documented Applications

A published Brazil investigation used GD-10 resistivity and IP measurements to delineate anomalies and recommend drilling to investigate possible sulfide-bearing zones. This illustrates an electrical exploration workflow, not verified GD-32 performance or confirmation of gold resources through geophysics alone.

A published landfill investigation combined SP, the charging method, and ERT to interpret suspected leakage pathways and low-resistivity zones. Such interpretations require appropriate inspection, sampling, or other independent evidence.

For a GD-32 quotation, buyers should request model-specific documentation and a complete configuration rather than assume that results from another instrument establish equivalent performance.

2. Guideline Geo — ABEM Terrameter LS 2

The ABEM Terrameter LS 2 is a resistivity and IP system offered by Guideline Geo for geotechnical, groundwater, mineral, environmental, and research applications.

Available configurations differ in receiving channels, electrode capacity, transmitter specifications, and supported features. The quoted version should therefore be identified explicitly.

Procurement teams should compare the planned survey layout with the supplied switching arrangement, acquisition functions, and processing workflow. Monitoring or specialized deployments should be specified separately from a standard survey package.

3. IRIS Instruments — Syscal Terra Switch

The Syscal Terra Switch is a resistivity and IP acquisition system with 20 receiving channels. Manufacturer documentation describes waveform recording, on-instrument data review, and support for several survey arrangements.

Its configuration can include different electrode capacities and switching components. Compatibility matters: the manufacturer notes that some existing Switch Pro arrangements operate with a 10-channel limitation.

For buyers, relevant checks include the complete electrode layout, required IP measurements, waveform-processing software, and accessories for borehole, water-based, or monitoring work.

4. Advanced Geosciences, Inc. — SuperSting Wi-Fi

AGI’s SuperSting Wi-Fi range supports resistivity, IP, and SP measurements. The range includes several channel configurations, with the R8 providing eight receiving channels.

AGI distinguishes the internal transmitter from available external transmitter options. Buyers should make the same distinction when comparing power, portability, and field logistics.

Marine and monitoring applications use additional configurations or modules. A quotation should identify the instrument version, switching equipment, cables, processing software, and any application-specific components.

5. Zonge International — Configured Resistivity/IP Systems

Zonge supplies electrical and electromagnetic instrumentation and survey services. Its published IP offering identifies receivers such as the ZEN High-Res and GDP-3224, paired with appropriate transmitters and power sources.

This is a configured system approach rather than a single directly interchangeable imaging instrument. Selection should account for receiver deployment, transmitter requirements, synchronization, electrode arrangements, and processing.

Buyers should also distinguish instrument procurement from contracted acquisition, inversion, and interpretation services. The scope and deliverables of each should be explicit.

Conclusion

A useful comparison starts with the survey objective, target properties, site access, and required spatial resolution. Maximum transmitter power, receiving channels, and A/D resolution are supporting specifications rather than a universal measure of performance.

For GD-32 buyers, the next step is to obtain its current configuration-specific quotation and compare it with complete proposals from other providers. Each proposal should identify hardware, accessories, software, training, and support.

Before purchase, use representative data or a field trial to evaluate acquisition quality, repeatability, processing compatibility, and practical deployment. Geophysical models should then inform investigations that can test their geological meaning through drilling, sampling, inspection, or engineering review.

https://www.geomative.com
Geomative Co., Ltd.