8. Conclusions
Many factors could affect cover measurement. Among them, bar diameter setting and range
setting (low or high) in the covermeter have a greater affect than the other factors explored in
this study.
Setting to actual bar diameter will give more accurate results than setting to assumed bar
diameter. It is desirable to obtain the information on bar diameter in the concrete before cover
measurement in order to achieve more accurate results.
“High” range settings should only be used when “low” range probe is not capable of
detecting the reinforcing bars. If cover measurement is required for thick concrete cover
structural elements, a proper calibration should be carried out prior to actual cover
measurement.
References
1. British Standard BS1881 Part 204 "Recommendations on the use of electromagnetic
covermeters".
2. John C Alldred, “Quantifying the losses in concrete cover-meter accuracy due to
congestion of reinforcement”, Structural Faults & Repair, London, July 1995.
3. Operating instructions for Proceq Profometer 5 Model Scanlog.