XCellTMNDT Device for Half-Cell Corrosion Mapping

Fast, reliable, & efficient detection of corrosion in reinforced concrete structures

iCOR® | Wireless NDT Corrosion Detection

Non-Invasive Wireless Technology 

This non-destructive testing device uses a probe outside the concrete to detect the location of corroded reinforcing steel.

SmartRock® | Concrete Temperature and Strength Maturity Sensor

Accurate Real-Time Data in Seconds 

Data is collected, analyzed, and stored wirelessly within the mobile app on the tablet provided where it can be easily shared with team members.
SmartRock® | Concrete Temperature and Strength Maturity Sensor

Simple & Easy-To-Use 

Effortlessly generate half-cell contour plots that illustrate the presence of rebar corrosion within the concrete structure.
SmartBox™  | Wireless Concrete Resistivity

Accurate Testing of Rebar Corrosion

XCell is a non-destructive testing device for fast, reliable, and accurate detection and analysis of corrosion in reinforced concrete structures, complete with accurate contour mapping.


  • Detection of corrosion in reinforcement
  • Measurement of rebar corrosion rate
  • Evaluation of corrosion potential of rebar
  • Measurement of in-situ electrical resistivity
  • Assessment of concrete durability
  • Rehabilitation and repair of concrete structures
XCell™ | Half-Cell Corrosion Mapping


  • Real-time contour mapping of corrosion potential
  • Automated temperature correction
  • Fast data assignment to grid points
  • Easy reporting and data exporting


  • Non-destructive and non-invasive wireless technology
  • Single-person operation device
  • Measurements obtained and evaluated within seconds
  • Simple and easy-to-use with minimal training required
  • Tablet included with free Android app
  • Verification kit included
Giatec Scientific Inc.


Voltage Measurement Range-750 to +250 mV / CSE  
Measurement Resolution0.1 mV
Sampling Rate1 s
Input Impedance>10 M ohm
Temperature Measurement Range32 – 122°F (0 ~ 50°C)  
Temperature Measurement Accuracy0.9°F (0.5°C) 

Reading Range and Accuracy

Measured Potential (mV)Probability of Steel Corrosion Activity
> – 200mVLess than 10%
-200mV to -350mVUncertain
< -350mVMore than 90%
  1. ASTM Standard C876-09 (2009). Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete, ASTM International, West Conshohocken, PA, www.astm.org.
  2. Elsener, B. (2001). Half-cell potential mapping to assess repair work on RC structures. Construction and Building Materials, 15(2-3), 133-139.
  3. Elsener, B., Andrade, C., Gulikers, J., Polder, R., & Raupach, M. (2003). Hall-cell potential measurements—Potential mapping on reinforced concrete structures. Materials and Structures, 36(7), 461-471.
  4. Elsener, B., & Bohni, H. (1988). Potential Mapping and Corrosion of Steel in Concrete. Corrosion Rates of Steel in Concrete, 143-156.
  5. Elsener, B., & Böhni, H. (1995). Condition evaluation of reinforced concrete bridges–The benefits of potential mapping. Proc. 6th Int. Conf. Structural Faults Repair, London, 47-52.
  6. Gu, P., & Beaudoin, J. J. (1998). Obtaining Effective Half-Cell Potential Measurements in Reinforced Concrete Structures. Institute for Research in Construction: Construction Technology Update, 18(4).
  7. RILEM TC 154-EMC. (2003). Half-cell Potential Measurements – Potential Mapping on Reinforced Concrete Structures. Materials and Structural Journal, 36(7), 461-471.
Part No.ItemDescription
900079XCell Enhanced Package (Tablet operation device)XCell Probe, Tablet with hands-free carrying support, Data analysis app., Alligator test clips (2 types), Test cable, Charging Cable, Tablet USB cable, USB charger, Extension arm, 3 pieces of contact sponge, Electrode storage solution, User manual, Carrying case (Tablet is included).
900080XCell Comprehensive Package (Tablet operation device)XCell Probe, Tablet with hands-free carrying support Test cable, Data analysis app., Alligator test clips (2 types), Test cable, Charging Cable, Tablet USB cable, USB charger, Extension arm, 3 pieces of contact sponge, Electrode storage solution, Verification probe, Extension reel, User manual, Carrying case (Tablet is included).


Yes. However, the user requires a product key to activate the Android application. The product key is unique number that is provided with the XCell sensor. Moreover, the Android device should have wireless 4.0 LE connectivity.

A verification kit is available to purchase with the XCell package. It is recommended to verify the device using this reference electrode before conducting a corrosion mapping project. In case the XCell readings are not in range, the device must be calibrated by our technical support team.

Yes, according to the half-cell test standard, a hard-wire connection to the steel rebar is required.

Corrosion map can be developed for a non-flat surface as the measurements are single points. But, it should be noted that delaminated surfaces cannot be tested since there is no physical contact between the concrete and rebar.

A: The XCell™ probe utilizes a silver/silver (I) chloride electrode in saturated KCl solution. Unlike the conventional copper-copper sulfate electrodes, the XCell™ electrode does not need changing the electrode solution. The electrochemical potential values measured by XCell™ are, however, shown based on the Cu/CuSO4 electrode according to the ASTM C876 specifications which state in section that:

“Other reference electrodes having similar measurement range, accuracy, and precision characteristics to the copper-copper sulfate electrode may also be used. Calomel reference electrodes have been used in laboratory studies. For
concrete submerged in seawater, using silver-silver chloride reference electrodes avoids chloride contamination problems that may occur with copper-copper sulfate electrodes. Silver/silver chloride/potassium chloride reference electrodes are also applied to atmospherically exposed concrete. Potentials measured by reference electrodes other than saturated copper-copper sulfate should be converted to the copper-copper sulfate equivalent potential. The conversion technique can be found in Practice G3 and “Reference Electrodes, Theory and Practice” by Ives and Janz.”

A: All three packages utilize the advanced maintenance-free electrode that has wireless connectivity. They are packaged with the other parts e.g. cables, charger, etc. in a hard carrying case. The main difference between these packages is as follows:

  1. Essential package does not come with any processing unit. The customer needs to download the Giatec XCell smart-phone application (free of charge) and install it on their android system (with wireless 4.0 connectivity). The smart-phone application communicates with the XCell probe and records the data (electrochemical potential and temperature) sequentially. The user needs to process the data later.
  2. The Enhanced and Comprehensive packages both come with a ruggedized tablet with neck carrying support, and an extension arm. The tablet is pre-installed with the XCell tablet application which is capable of creating grids for data assignment to grid points as well as real-time corrosion map generation. The corrosion contour maps can be exported and shared in different formats.
  3. The Comprehensive package, additionally, has extension reel and verification kit. The verification kit can be used from time to time to ensure the proper functionality of the XCell probe.

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