Measuring instruments, geophysical instruments

Corrosion Analysis Resipod

category:Non destructive testing / Corrosion Analysis


Resipod is a fully integrated 4-point Wenner probe, designed to measure the electrical resistivity of concrete in a completely non-destructive test. It is the most accurate instrument available, extremely fast and stable and packaged in a robust, waterproof housing designed to operate in a demanding site environment. The Resipod is the successor of the classic CNS Farnell Resistivity Meter.

Surface resistivity measurement provides extremely useful information about the state of a concrete structure. Not only has it been proven to be directly linked to the likelihood of corrosion and the corrosion rate, recent studies have shown that there is a direct correlation between resistivity and chloride diffusion rate and even to determination of early compressive strength. This makes it one of the most versatile NDT methods for concrete.



  • Estimation of the likelihood of corrosion
  • Indication of corrosion rate
  • Correlation to chloride permeability
  • On site assessment of curing efficiency
  • Determination of zonal requirements for cathodic protection systems
  • Identification of wet and dry areas in a concrete structure
  • Indication of variations in the water/ cement ratios within a concrete structure
  • Identification of areas within a structure most susceptible to chloride penetration
  • Correlation to early compressive strength
  • Correlation to water permeability of rock