Surface Resistivity

Building Materials Testing Systems

Product Details

  • Category:Building Materials Testing Systems
  • Code:
  • Standards:

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. The versatility of the method can be seen in these example applications:

  • 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 water permeability of rock
  • 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.

  • Ratio: 1 – ca. 1000 kΩcm (Depending on the probe interval)
  • Sensitivity (rated current 200µA ): ±0.2 kΩcm or ±1% (whichever is greater)
  • Sensitivity (rated current 50µA ): ±0.3 kΩcm or ±2% (whichever is greater)
  • Sensitivity (rated current <50µA ): ±2 kΩcm or ±5% (whichever is greater)
  • Frequency: 40 Hz AC
  • Power Supply: > 50 hours
  • Internal Memory: ca.500
  • Charging connection : USB type B, (5V, 100mA)
  • Dimensions: 197 x 53 x 69.7 mm (7.8 x 2.1 x 2.7 inch)
  • Weight: 318g (11.2 oz)
  • Operating temperature : 0° -50°C (32° -122°F)
  • Storage temperature : -10° - 70°C (14° -158°F)