: For larger areas, use a fixed grid pattern. This makes data visualization in your report much clearer for clients to understand. 3. Comparison with Modern Reporting
The eddy currents generate a secondary, opposing magnetic field.
Measures the distance from the concrete surface to the top of the rebar.
Pulse induction meters are sensitive to environmental factors. Use these manual workarounds to maintain data integrity. Tightly Spaced Rebars proceq profometer 4 manual
Hold the probe parallel to the expected direction of the rebars.
Before using the instrument for the first time, the battery must be charged:
Do you need assistance determining the on-site? Share public link : For larger areas, use a fixed grid pattern
The signal intensity increases as the probe approaches a rebar. The rebar is located directly beneath the center of the probe when the display shows the minimum cover depth (or maximum analog needle deflection) and the audio signal reaches its highest pitch. Measuring Concrete Cover
To ensure the most accurate readings, it is important to be aware of factors that can influence results. The arrangement and congestion of reinforcement, variations in iron content within cement, and the presence of aggregates with magnetic properties can all affect measurements. Closely spaced or bundled rebars and the presence of binding wires can also reduce measurement accuracy. Therefore, careful interpretation of results is always required.
If bars are spaced closer than the cover depth, the magnetic fields overlap. The instrument will read a cover depth that appears shallower than it actually is. Comparison with Modern Reporting The eddy currents generate
| Problem | Likely cause | Action | |---------|--------------|--------| | No signal / unstable | Probe not flat or moving too fast | Slow down, keep probe flush | | Wrong cover reading | Wrong bar diameter selected | Adjust in settings | | Battery drains fast | Old battery or cold environment | Recharge; warm up unit | | Frequent “Metal too close” | Nearby reinforcement or steel formwork | Move to clear area for calibration |
Accurate for shallow concrete cover (up to approx. 50–60 mm). It provides high resolution and can easily distinguish between closely spaced bars.
This procedure ensures the instrument's readings are accurate and compliant with relevant standards. The Profometer 4 is designed to comply with various international guidelines for cover measurement, including BS 1881-204, DIN 1045, DGZfP B2, SN 505262, and SS 78-B4. For corrosion analysis, it complies with standards such as ASTM C876, RILEM TC 154-EMC, DGZfP B3, and SIA 2006.
Inspect the plastic sole of the probe for abrasive wear. Scratches can catch on rough concrete and affect smooth scanning speed.
Up to 180 mm (7.1 inches) depending on rebar diameter and spacing. Cover Measurement Precision: Within ±1plus or minus 1 mm for shallow to mid-range depths.