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Interpex Ix1d V350 Portable |verified| May 2026

The Interpex IX1D v3.50 is a 1D geophysical inversion software designed for processing and interpreting data from various electromagnetic and resistivity methods. While "v3.50" refers to the software version, it is typically used in the field as a "portable" solution on Windows-based laptops for real-time data analysis. Core Modeling & Inversion Features

Dual Inversion Types: It supports both Robust inversion (typically 1 to 10 discrete layers) and Smooth inversion (Occam’s inversion with 10 to 100 layers) to provide a more continuous profile of the subsurface.

Equivalence Analysis: A critical feature that allows users to determine the range of possible models (varying thickness and resistivity) that could fit the data equally well, helping to assess the non-uniqueness of the interpretation.

Forward Modeling: Users can manually create or edit synthetic models to compare them against field data and calculate the RMS error for fit verification.

Parameter Locking: The "Fix Flags" feature allows you to freeze specific layer thicknesses or resistivity values based on known geological or borehole data during the inversion process. Supported Survey Methods interpex ix1d v350 portable

The software is versatile, supporting a wide array of geophysical sensors and array types:

DC Resistivity (VES): Supports Wenner, Schlumberger, Dipole-dipole, Pole-dipole, and Pole-pole arrays.

Induced Polarization (IP): Handles measurements in PFE (Percent Frequency Effect), Chargeability (msec), or Phase (mrad). Electromagnetics:

TEM (Transient EM): Supports central, fixed, or coincident loop configurations. The Interpex IX1D v3

FEM (Frequency Domain EM): Supports horizontal coplanar, vertical coplanar, and vertical coaxial measurements.

Magnetotelluric (MT): Handles inversion for Apparent Resistivity and Impedance Phase. Data Handling & Output

Borehole Integration: It can import resistivity well logs from ASCII files, allowing users to interactively reduce logs to discrete layers to inform the 1D model.

Export Options: Interpretations can be exported as DXF (for CAD), ASCII, or high-quality image formats like WMF and CGM. Typical Applications:

Interactive Graphics: Features a "Data vs. Model" split screen where users can graphically edit layer depths or resistivity values by dragging points on the screen.

For the most up-to-date documentation or to download a trial, you can visit the Interpex Official Site. Interpex IX1D V3.50 - Google Groups

Typical Applications:

  • Groundwater exploration: Locating sand and gravel aquifers, mapping fresh-salt water interfaces.
  • Mineral exploration: Detecting weathered zones, disseminated sulfides (via IP), and alteration halos.
  • Geotechnical engineering: Bedrock depth mapping for foundation design.
  • Archaeology: Locating buried walls, tombs, and trenches without excavation.

Overview

The Interpex IX1D V350 Portable is a lightweight, field-ready resistivity meter and induced polarization (IP) instrument. It is designed for professionals conducting shallow to medium-depth subsurface investigations. Unlike larger, truck-mounted systems, the V350 prioritizes portability and ease of use without sacrificing data quality.

Advantages

  • Portability: easy to carry and operate in confined or remote locations
  • Simplicity: straightforward interface reduces training time
  • Cost-effective: typically less expensive than bench instruments
  • Durability: designed for on-site conditions with shock-resistant casing